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具有5-羟基呋喃-2(5H)-酮骨架的化合物及其制备方法与流程

时间:2022-02-24 阅读: 作者:专利查询

具有5-羟基呋喃-2(5H)-酮骨架的化合物及其制备方法与流程
具有5-羟基呋喃-2(5h)-酮骨架的化合物及其制备方法
技术领域
1.本发明属于有机合成技术领域,具体涉及一种具有5-羟基呋喃
ꢀ‑
2(5h)-酮骨架的化合物及其制备方法。


背景技术:

2.研究表明,许多药物和活性天然产物分子均具有呋喃-2(5h)-酮骨架,如下所示,罗非昔布是一种选择性环氧化酶-2(cox-2)抑制剂,用于治疗骨性关节炎和类风湿性关节炎,也用于缓解急性疼痛和治疗原发性痛经。天然产物sorgolactone具有促进种子发芽活性,天然产物lambertellola具有抗菌活性,天然产物kallolidea具有抗炎活性。由此可见,具有呋喃-2(5h)-酮结构的化合物具有潜在的药理应用价值。因此,发展一种高效的制备方法来合成呋喃-2(5h)-酮类化合物具有重要的理论价值和应用价值。
3.

技术实现要素:

4.本发明的目的在于提供一种具有5-羟基呋喃-2(5h)-酮骨架的化合物及其制备方法。该合成方法具有底物适用范围广、区域选择性高、立体选择性高、产率良好、官能团耐受性好、反应步骤经济、成键效率高、反应条件温和等优点。
5.本发明的目的之一是提供一种具有5-羟基呋喃-2(5h)-酮骨架的化合物的制备方法,所述具有5-羟基呋喃-2(5h)-酮骨架的化合物结构式如式《ⅳ》所示,所述制备方法包括以下步骤:
6.以式《ⅰ》所示吲哚化合物和式《ⅱ》所示4-羟基-2-炔酸酯化合物为底物,并以[cp*rhcl2]2为催化剂、naoac为添加剂、丙酮为溶剂,于空气氛围下反应,得到式《ⅳ》所示化合物;
[0007][0008]
上述方法所涉及的反应式如下:
[0009][0010]
其中,r1代表苯环上任意位置的取代基,其选自以下基团:氢、卤素、烷基、烷氧基、3-6元含一个n、o或s原子的杂环、氰基、酯基;
[0011]
r2选自以下基团:氢、取代或未取代的烷基;
[0012]
r3选自以下基团:取代或未取代烷基;
[0013]
r4选自以下基团:取代或未取代烷基、芳基;
[0014]
r5选自以下基团:烷基;
[0015]
所述的取代指基团上的一个或多个氢原子被选自下组的任意基团取代:苯基。
[0016]
进一步的是,所述的卤素包括f、cl、br或i。
[0017]
进一步的是,所述的烷基包括甲基、乙基、异丙基、正丁基、叔丁基或正戊基;所述的烷氧基包括甲氧基或乙氧基;所述的取代烷基包括苄基;所述的芳基包括苯基、对甲基取代的苯基或对氯取代的苯基。
[0018]
进一步的是,所述的3-6元含一个n、o或s原子的杂环包括以下基团:
[0019]
进一步的是,所述反应的条件为:反应温度为25℃,反应时间为5-24h。
[0020]
进一步的是,所述化合物ⅰ和化合物ⅱ的摩尔比为1:1.3。
[0021]
进一步的是,所述催化剂的用量为化合物ⅰ摩尔量的1%~10%,优选5%(实施例中以用量5%为例)。
[0022]
进一步的是,所述添加剂与化合物ⅰ的摩尔比为1:1。
[0023]
本发明的目的之二是提供由上述方法制备得到的具有5-羟基呋喃-2(5h)-酮骨架的化合物。如本发明实施例所示,本发明提供了一系列已被成功合成的化合物,并对这一系列化合物进行了表征。
[0024]
本发明的有益效果如下:
[0025]
本发明开发出了一类铑催化c

h烯化/导向基迁移/内酯化/c

h 羟基化串联反应,成功制备了一系列具有5-羟基呋喃-2(5h)-酮骨架的化合物。该合成反应具有底物适用范围广、区域选择性和立体选择性高、产率良好、官能团耐受性好、反应步骤经济、成键效率高、反应条件温和等优点,且该反应可以放大到克级规模,具有较好的应用价值。
具体实施方式
[0026]
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例对本发明进行具体描述,有必要指出的是,以下实施例仅仅用于对本发明进行解释和说明,并不用于限定本发明。本领域技术人员根据上述发明内容所做出的一些非本质的改进和调整,仍属
于本发明的保护范围。
[0027]
实施例1
[0028]
反应条件的优化:
[0029]
以吲哚1aa和4-羟基壬-2-炔酸甲酯2aa为模板底物,按照表1 所示步骤对反应条件进行优化。
[0030]
首先,以naoac为添加剂,在一系列金属催化剂的催化下,1aa 和2aa在acetone(丙酮)中在空气氛围下于25℃反应5h(序号1-6)。结果表明,当以[cp*rhcl2]2为催化剂时,能以77%的产率获得目标 c

h烯化/导向基迁移/内酯化/c

h羟基化串联反应产物4aa,并伴随着少量的副产物3aa的生成(序号6)。
[0031]
然后,分别以[cp*rhcl2]2和naoac为催化剂和添加剂对溶剂进行筛选(序号7-11),结果表明,丙酮仍然是最佳反应溶剂。
[0032]
随后,在最佳反应溶剂丙酮中考察了各种添加剂(序号12-14),相比之下,naoac仍然是最有效的添加剂。
[0033]
最后,进行了空白实验(序号15和16)。结果表明,[cp*rhcl2]2和naoac均不可或缺,[cp*rhcl2]2/naoac催化体系是成功实现该 c

h烯化/导向基迁移/内酯化/c

h羟基化串联反应的关键。
[0034]
表1.反应条件优化a[0035]
[0036][0037]a反应条件:1aa(0.25mmol),2aa(0.325mmol),催化剂(5mol%),添加剂(0.25 mmol),空气(1标准大气压),溶剂(4.0ml),反应温度25℃,反应时间5h;b指分离产率。n-pent为正戊基,acetone为丙酮,dcm为二氯甲烷,dce为1,2
‑ꢀ
二氯乙烷,thf为四氢呋喃,etoh为乙醇,dmf为为n,n-二甲基甲酰胺,trace 表示痕量。
[0038]
实施例2
[0039]
底物适用范围考察:
[0040]
在上述最佳反应条件下(序号6),按照表2所示,考查了铑催化c

h烯化/导向基迁移/内酯化/c

h羟基化串联反应的底物适用范围,制备了一系列具有5-羟基呋喃-2(5h)-酮骨架的化合物4。首先以 4-羟基壬-2-炔酸甲酯2aa为偶联组分,考察了吲哚底物的适用范围,合成了化合物4aa-4be,并统计其产率。然后考察了4-羟基-2-炔酸酯类底物的适用范围,合成了化合物4bf-4bn,并统计其产率。考查结果见表2。
[0041]
具体方法为:向25ml舒伦克反应管中依次加入吲哚1(0.25 mmol)、[cp*rhcl2]2(5mol%)和naoac(0.25mmol),再向其中加入含4-羟基-2-炔酸酯2(0.325mmol)的丙酮(4.0ml)溶液,然后用橡胶塞封住反应管,将得到的反应混合物在25℃下搅拌反应,具体反应时间如表2所示。反应结束后,先减压浓缩去除反应溶剂,所得残留物在硅胶上通过快速色谱纯化,得到目标产物4。
[0042]
表2.底物适用范围
a,b
[0043][0044][0045]a反应条件:底物1(0.25mmol),底物2(0.325mmol),[cp*rhcl2]2(5mol%), naoac(0.25mmol),空气(1标准大气压),丙酮(4.0ml),25℃,5-24h;b分离产率。n-pent为正戊基,et为乙基,n-bu为正丁基,ph为苯基。
[0046]
上述结果表明,本发明提供的铑催化c

h烯化/导向基迁移/内酯化/c

h羟基化串联反应具有底物适用范围广、区域选择性和立体选择性高、产率良好、官能团耐受性好、反应步骤经济、成键效率高、反应条件温和等优点,可以高效地合成一系列具有5-羟基呋喃-2(5h)
‑ꢀ
酮骨架的化合物4。
[0047]
实施例3
[0048]
克级放大反应实验:
[0049]
按照如下的反应式所示反应条件进行克级放大反应,在100ml圆底烧瓶中依次加入吲哚1aa(6mmol)、[cp*rhcl2]2(5mol%)和naoac(6mmol),然后向其中加入含4-羟基壬-2-炔酸甲酯2aa(7.8mmol)的丙酮溶液(40.0ml),将所得反应混合物在25℃下敞开放置于空气中搅拌20小时。反应结束后,先减压浓缩去除反应溶剂,所得残留物在硅胶上用快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),能以79%的产率得到1.70g黄色无定形固体,即为目标产物4aa。放大反应实验结果证明:该反应可以放大到克级规模,进一步证明这类反应的实用性。
[0050][0051]
实施例4
[0052]
对上述实施例2和3中制备的一系列具有5-羟基呋喃-2(5h)-酮骨架的化合物(化合物一至四十六)的具体表征:
[0053]
表征方法采用氢谱+碳谱+高分辨质谱,所得系列化合物的表征结果如下:
[0054]
化合物一(4aa):
[0055]
5-羟基-4-(1h-吲哚-2-基)-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0056]
5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0057]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(69.1mg,产率77%),mp(熔点)166-167℃。
[0058]1hnmr(500mhz,dmso-d6)δ12.47(s,1h),11.65(s,1h),8.26(s,1h),7.73(d,j=8.1hz,1h),7.66(dd,j=8.4,0.5hz,1h),7.44(d,j=0.9hz,1h),7.35-7.29(m,1h),7.13-7.07(m,1h),3.77(s,3h),2.20(ddd,j=14.1,11.7,4.5hz,1h),2.05(ddd,j=14.0,11.6,4.8hz,1h),1.31-1.23(m,1h),1.20-1.12(m,4h),1.11-1.01(m,1h),0.75(t,j=6.9hz,3h);
13
cnmr(125mhz,dmso-d6)δ167.94,159.26,158.10,137.97,127.33,126.92,126.31,122.34,120.75,112.90,112.83,112.81,107.29,63.61,39.52,30.84,22.36,21.81,13.73;hrms(esi)m/z:[m+h]
+
calcdforc
19h23
n2o5359.1601;found359.1600.
[0059]
化合物二(4ab):
[0060]
4-(4-氟-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0061]
4-(4-fluoro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0062]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(65.6mg,产率70%),mp178-179℃。
[0063]1hnmr(500mhz,dmso-d6)δ12.58(s,1h),11.71(s,1h),8.33(s,1h),7.54(d,j=8.4hz,1h),7.38(d,j=1.1hz,1h),7.34-7.26(m,1h),6.90(dd,j=10.4,7.8hz,1h),3.77(s,3h),2.20(ddd,j=14.1,11.6,4.5hz,1h),2.04(ddd,j=14.0,11.5,4.8hz,1h),1.33-1.24(m,1h),1.22-1.15(m,4h),1.13-1.04(m,1h),0.76(t,j=6.9hz,3h);
13
cnmr(125mhz,dmso-d6)δ167.56,158.88,157.20,155.98(d,j
c-f
=248.7hz),139.99(d,j
c-f
=9.6hz),127.14,126.57(d,j
c-f
=7.6hz),116.88(d,j
c-f
=22.4hz),114.52,109.61(d,j
c-f
=3.5hz),107.24,107.06,104.72(d,j
c-f
=17.8hz),63.57,39.11,30.76,22.32,21.77,13.68;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
fn2o5377.1507;found377.1506.
[0064]
化合物三(4ac):
[0065]
4-(4-氯-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0066]
4-(4-chloro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamid
[0067]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(64.8mg,产率66%),mp162-163℃。
[0068]1hnmr(600mhz,dmso-d6)δ12.57(s,1h),11.75(s,1h),8.40(s,1h),7.69(d,j=8.3hz,1h),7.35(s,1h),7.32-7.27(m,1h),7.20(d,j=7.5hz,1h),3.77(s,3h),2.24-2.14(m,1h),2.07-1.97(m,1h),1.32-1.25(m,1h),1.20-1.14(m,4h),1.12-1.03(m,1h),0.75(t,j=6.8hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.54,158.86,156.98,138.49,127.51,126.59,125.96,125.80,120.26,115.07,112.33,109.20,107.26,63.60,39.14,30.82,22.37,21.83,13.74;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
cln2o5393.1212;found393.1209.
[0069]
化合物四(4ad):
[0070]
4-(4-溴-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0071]
4-(4-bromo-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0072]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(43.5mg,产率40%),mp 146-147℃。
[0073]1h nmr(600mhz,dmso-d6)δ12.56(s,1h),11.75(s,1h),8.40(s,1h),7.73(d,j =8.3hz,1h),7.36(d,j=7.5hz,1h),7.28(s,1h),7.26-7.22(m,1h),3.78(s,3h), 2.24-2.15(m,1h),2.04-1.98(m,1h),1.31-1.25(m,1h),1.20-1.13(m,4h), 1.12-1.04(m,1h),0.76(t,j=6.6hz,3h);
13
c nmr(150mhz,dmso-d6)δ167.49, 158.81,156.83,138.09,127.75,127.36,126.85,123.44,115.18,114.80,112.77, 110.77,107.20,63.57,39.09,30.80,22.34,21.80,13.72;hrms(esi)m/z:[m+h]
+ calcd for c
19h22
brn2o5437.0707;found437.0704.
[0074]
化合物五(4ae):
[0075]
4-(5-氟-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0076]
4-(5-fluoro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxa mide
[0077]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(64.2mg,产率68%),mp 181-182℃。
[0078]1h nmr(600mhz,dmso-d6)δ12.46(s,1h),11.70(s,1h),8.32(s,1h),7.72(dd, j=9.0,4.5hz,1h),7.51(dd,j=9.4,2.1hz,1h),7.40(s,1h),7.23-7.15(m,1h), 3.77(s,3h),2.24-2.15(m,1h),2.08-1.99(m,1h),1.30-1.24(m,1h),1.21-1.14(m, 4h),1.11-1.02(m,1h),0.76(t,j=6.6hz,3h);
13
c nmr(150mhz,dmso-d6)δ 167.76,159.05,157.62,157.41(d,j
c-f
=234.9hz),134.80,128.36,127.32(d,j
c-f
= 10.8hz),115.20(d,j
c-f
=27.1hz),114.54(d,j
c-f
=9.2hz),113.87,112.24(d,j
c-f
=5.7hz),107.30,105.99(d,j
c-f
=23.3hz),63.63,39.30,30.86,22.37,21.84,13.75; hrms(esi)m/z:[m+h]
+
calcd for c
19h22
fn2o5377.1507;found 377.1505.
[0079]
化合物六(4af):
[0080]
4-(5-氯-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0081]
4-(5-chloro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carbox amide
[0082]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(69.3mg,产率71%),mp 141-142℃。
[0083]1h nmr(600mhz,dmso-d6)δ12.49(s,1h),11.71(s,1h),8.33(s,1h),7.82(s, 1h),7.73(d,j=8.8hz,1h),7.40(s,1h),7.30(dd,j=8.8,1.4hz,1h),3.77(s,3h), 2.23-2.13
(m,1h),2.07-1.96(m,1h),1.30-1.25(m,1h),1.19-1.13(m,4h),1.10-1.03(m,1h),0.75(t,j=6.3hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.66,158.93,157.44,136.29,128.19,128.12,126.06,125.19,121.12,114.76,114.30,111.68,107.28,63.61,39.20,30.83,22.34,21.81,13.74;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
cln2o5393.1212;found393.1207.
[0084]
化合物七(4ag):
[0085]
4-(5-溴-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0086]
4-(5-bromo-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0087]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(71.6mg,产率66%),mp145-146℃。
[0088]1hnmr(500mhz,dmso-d6)δ12.48(s,1h),11.69(s,1h),8.31(s,1h),7.97(d,j=1.7hz,1h),7.68(d,j=8.8hz,1h),7.44-7.36(m,2h),3.77(s,3h),2.24-2.13(m,1h),2.07-1.97(m,1h),1.33-1.24(m,1h),1.21-1.13(m,4h),1.11-1.02(m,1h),0.76(t,j=6.8hz,3h);
13
cnmr(125mhz,dmso-d6)δ167.63,158.90,157.38,136.46,128.91,128.46,127.92,124.26,115.10,114.36,113.15,111.51,107.26,63.59,39.16,30.80,22.30,21.78,13.71;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
brn2o5437.0707;found437.0709.
[0089]
化合物八(4ah):
[0090]
5-羟基-4-(5-碘-1h-吲哚-2-基)-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0091]
5-hydroxy-4-(5-iodo-1h-indol-2-yl)-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0092]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(79.5mg,产率66%),mp135-136℃。
[0093]1hnmr(500mhz,dmso-d6)δ12.45(s,1h),11.67(s,1h),8.28(s,1h),8.14(s,1h),7.57-7.49(m,2h),7.35(d,j=1.6hz,1h),3.75(s,3h),2.22-2.10(m,1h),2.06-1.93(m,1h),1.29-1.21(m,1h),1.19-1.10(m,4h),1.09-1.00(m,1h),0.74(t,j=6.7hz,3h);
13
cnmr(125mhz,dmso-d6)δ167.66,158.93,157.40,136.76,133.78,130.61,129.85,127.45,115.36,114.22,111.22,107.26,84.67,63.59,39.18,30.80,22.30,21.77,13.72;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
in2o5485.0568;found485.0567.
[0094]
化合物九(4ai):
[0095]
4-(6-氟-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0096]
4-(6-fluoro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0097]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(67.1mg,产率71%),mp150-151℃。
[0098]1hnmr(600mhz,dmso-d6)δ12.53(s,1h),11.67(s,1h),8.28(s,1h),7.78(dd,j=8.7,5.6hz,1h),7.55(d,j=9.9hz,1h),7.47(s,1h),7.02-6.96(m,1h),3.77(s,3h),2.24-2.14(m,1h),2.08-1.99(m,1h),1.30-1.23(m,1h),1.20-1.13(m,4h),1.10-1.03(m,1h),0.76(t,j=6.6hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.88,161.48(d,j
c-f
=241.2hz),159.20,157.74,138.18(d,j
c-f
=13.6hz),127.72(d,j
c-f
=3.2hz),124.34,124.13(d,j
c-f
=10.4hz),113.20,112.72,110.38(d,j
c-f
=25.7hz),107.23,98.62(d,j
c-f
=26.4hz),63.61,39.48,30.83,22.36,21.81,13.73;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
fn2o5377.1507;found377.1506.
[0099]
化合物十(4aj):
[0100]
4-(6-氯-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0101]
4-(6-chloro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0102]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(72.9mg,产率74%),mp183-184℃。
[0103]1hnmr(600mhz,dmso-d6)δ12.44(s,1h),11.69(s,1h),8.31(s,1h),7.84(s,1h),7.76(d,j=8.6hz,1h),7.45(s,1h),7.12(dd,j=8.6,1.6hz,1h),3.77(s,3h),2.22-2.15(m,1h),2.06-1.98(m,1h),1.30-1.24(m,1h),1.20-1.13(m,4h),1.11-1.04(m,1h),0.76(t,j=6.6hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.71,158.99,157.47,138.16,130.69,127.78,125.99,123.77,121.36,113.79,112.63,107.26,63.60,39.26,30.82,22.34,21.80,13.73;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
cln2o5393.1212;found393.1212.
[0104]
化合物十一(4ak):
[0105]
4-(6-溴-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0106]
4-(6-bromo-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0107]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(81.5mg,产率75%),mp191-192℃。
[0108]1hnmr(600mhz,dmso-d6)δ12.41(s,1h),11.69(s,1h),8.33(s,1h),7.98(s,1h),7.70(d,j=8.6hz,1h),7.43(s,1h),7.23(d,j=8.5hz,1h),3.77(s,3h),2.22-2.14(m,1h),2.07-1.98(m,1h),1.28-1.24(m,1h),1.19-1.13(m,4h),1.10-1.03(m,1h),0.75(t,j=6.4hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.76,159.02,157.47,138.59,127.64,126.22,124.04,123.90,119.16,115.71,113.99,112.63,107.33,63.66,39.26,30.85,22.38,21.84,13.77;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
brn2o5437.0707;found437.0706.
[0109]
化合物十二(4al):
[0110]
4-(7-氟-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0111]
4-(7-fluoro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0112]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(61.8mg,产率66%),mp188-189℃。
[0113]1hnmr(600mhz,cdcl3)δ12.94(s,1h),11.20(s,1h),7.53(s,1h),7.37(d,j=7.5hz,1h),6.97-6.85(m,2h),5.36(s,1h),3.89(s,3h),2.40-2.29(m,1h),2.10-2.00(m,1h),1.36-1.28(m,1h),1.23-1.14(m,4h),1.13-1.05(m,1h),0.79(t,j=6.6hz,3h);
13
cnmr(150mhz,cdcl3)δ169.64,160.62,160.12,149.59(d,j
c-f
=248.8hz),130.98(d,j
c-f
=4.4hz),128.12(d,j
c-f
=14.1hz),127.40,121.37(d,j
c-f
=5.4hz),118.42(d,j
c-f
=4.0hz),115.67,111.45(d,j
c-f
=15.6hz),110.05,108.04,64.85,41.00,31.46,22.77,22.44,13.99;hrms(esi)m/z:[m+h]
+
calcdforc
19h22
fn2o5377.1507;found377.1507.
甲酰胺
[0126]
5-hydroxy-n-methoxy-4-(5-methyl-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carbox amide
[0127]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(65.6mg,产率70%),mp 155-156℃。
[0128]1h nmr(500mhz,dmso-d6)δ12.44(s,1h),11.63(s,1h),8.23(s,1h),7.56(d,j =8.5hz,1h),7.50(s,1h),7.35(d,j=0.7hz,1h),7.17(dd,j=8.5,1.2hz,1h), 3.77(s,3h),2.38(s,3h),2.20(ddd,j=14.0,11.7,4.5hz,1h),2.04(ddd,j=14.0, 11.5,4.8hz,1h),1.31-1.23(m,1h),1.21-1.13(m,4h),1.11-1.01(m,1h),0.76(t,j =6.9hz,3h);
13
c nmr(125mhz,dmso-d6)δ168.02,159.36,158.25,136.57, 129.55,128.50,127.63,126.92,121.25,112.61,112.35,112.17,107.23,63.58,39.59, 30.80,22.32,21.77,21.07,13.70;hrms(esi)m/z:[m+h]
+
calcd for c
20h25
n2o
5 373.1758;found 373.1756.
[0129]
化合物十六(4ap):
[0130]
5-羟基-n-甲氧基-4-(5-甲氧基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0131]
5-hydroxy-n-methoxy-4-(5-methoxy-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carb oxamide
[0132]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色粘稠油状物(69.6mg,产率72%)。
[0133]1h nmr(600mhz,dmso-d6)δ12.47(s,1h),11.63(s,1h),8.26(s,1h),7.59(d,j =9.0hz,1h),7.35(s,1h),7.18(s,1h),6.99(dd,j=9.0,2.2hz,1h),3.77(s,3h), 3.77(s,3h),2.24-2.16(m,1h),2.08-2.01(m,1h),1.28-1.23(m,1h),1.20-1.13(m, 4h),1.10-1.02(m,1h),0.76(t,j=6.4hz,3h);
13
c nmr(150mhz,dmso-d6)δ 168.08,159.41,158.18,154.25,133.72,127.78,127.17,118.60,113.99,112.35, 111.87,107.23,101.51,63.61,55.25,39.63,30.86,22.38,21.83,13.76;hrms(esi) m/z:[m+h]
+
calcd for c
20h25
n2o6389.1707;found 389.1706.
[0134]
化合物十七(4aq):
[0135]
4-(5-乙氧基-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0136]
4-(5-ethoxy-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carbox amide
[0137]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到橙色无定形固体(69.5mg,产率69%),mp 151-152℃。
[0138]1hnmr(600mhz,cdcl3)δ12.83(s,1h),11.16(s,1h),7.34(s,1h),7.23(d,j=9.0hz,1h),6.97(dd,j=9.0,2.3hz,1h),6.85(d,j=1.7hz,1h),5.07(s,1h),4.01(q,j=6.9hz,2h),3.86(s,3h),2.36-2.28(m,1h),2.09-2.00(m,1h),1.44(t,j=6.9hz,3h),1.36-1.29(m,1h),1.23-1.16(m,4h),1.14-1.08(m,1h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.96,161.05,159.93,154.18,135.20,128.33,127.14,121.32,114.78,113.85,108.12,107.80,102.24,64.79,63.95,41.21,31.51,22.81,22.47,15.01,14.02;hrms(esi)m/z:[m+h]
+
calcdforc
21h27
n2o6403.1864;found403.1861.
[0139]
化合物十八(4ar):
[0140]
5-羟基-n-甲氧基-4-(6-甲基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0141]
5-hydroxy-n-methoxy-4-(6-methyl-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0142]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(70.0mg,产率75%),mp169-170℃。
[0143]1hnmr(600mhz,cdcl3)δ12.64(s,1h),11.17(s,1h),7.49-7.43(m,2h),7.04(s,1h),6.88(dd,j=8.3,0.9hz,1h),5.28(s,1h),3.85(s,3h),2.41(s,3h),2.35-2.27(m,1h),2.08-2.01(m,1h),1.32-1.28(m,1h),1.21-1.14(m,4h),1.12-1.06(m,1h),0.78(t,j=7.0hz,3h);
13
cnmr(150mhz,cdcl3)δ170.01,161.12,159.91,139.86,138.74,126.58,126.09,123.87,122.34,116.04,112.26,107.92,107.85,64.73,41.31,31.49,22.79,22.47,22.45,14.01;hrms(esi)m/z:[m+h]
+
calcdforc
20h25
n2o5373.1758;found373.1754.
[0144]
化合物十九(4as):
[0145]
5-羟基-n-甲氧基-4-(6-甲氧基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0146]
5-hydroxy-n-methoxy-4-(6-methoxy-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0147]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(68.5mg,产率71%),mp135-136℃。
[0148]1hnmr(600mhz,cdcl3)δ12.72(s,1h),11.20(s,1h),7.48-7.40(m,2h),6.70(dd,j=8.9,2.1hz,1h),6.57(d,j=1.5hz,1h),5.33(s,1h),3.85(s,3h),3.81(s,3h),2.31(ddd,j=14.1,12.1,4.4hz,1h),2.03(ddd,j=14.0,12.1,4.4hz,1h),1.35-1.30(m,1h),
1.22-1.15(m,4h),1.14-1.06(m,1h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ170.13,161.48,160.99,159.22,140.98,126.37,123.69,123.04,116.71,114.78,107.65,106.41,93.12,64.72,55.53,41.46,31.52,22.80,22.46,14.02;hrms(esi)m/z:[m+h]
+
calcdforc
20h25
n2o6389.1707;found389.1703.
[0149]
化合物二十(4at):
[0150]
5-羟基-n-甲氧基-4-(7-甲基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0151]
5-hydroxy-n-methoxy-4-(7-methyl-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0152]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(23.4mg,产率25%),mp168-169℃。
[0153]1hnmr(600mhz,cdcl3)δ12.91(s,1h),11.11(s,1h),7.50(d,j=1.8hz,1h),7.44(d,j=8.1hz,1h),7.07(d,j=6.9hz,1h),7.00-6.95(m,1h),5.30(s,1h),3.86(s,3h),2.50(s,3h),2.39-2.30(m,1h),2.09-2.03(m,1h),1.34-1.30(m,1h),1.24-1.15(m,4h),1.13-1.07(m,1h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.84,161.10,160.10,139.47,127.80,127.52,126.48,122.52,121.84,120.22,116.29,108.47,107.86,64.73,41.32,31.51,22.81,22.47,16.81,14.03;hrms(esi)m/z:[m+h]
+
calcdforc
20h25
n2o5373.1758;found373.1755.
[0154]
化合物二十一(4au):
[0155]
5-羟基-n-甲氧基-4-(7-甲氧基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺5-hydroxy-n-methoxy-4-(7-methoxy-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0156]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(65.2mg,产率67%),mp183-184℃。
[0157]1hnmr(600mhz,cdcl3)δ12.95(s,1h),11.06(s,1h),7.44(d,j=1.5hz,1h),7.17(d,j=8.2hz,1h),6.99-6.92(m,1h),6.64(d,j=7.5hz,1h),5.06(s,1h),3.97(s,3h),3.85(s,3h),2.36-2.28(m,1h),2.08-2.02(m,1h),1.33-1.26(m,1h),1.22-1.12(m,4h),1.11-1.02(m,1h),0.78(t,j=6.8hz,3h);
13
cnmr(150mhz,cdcl3)δ169.79,160.63,159.91,146.79,130.94,129.13,126.47,121.88,115.58,114.78,109.11,107.77,105.78,64.76,55.63,41.15,31.48,22.79,22.45,14.00;hrms(esi)m/z:[m+h]
+
calcdforc
20h25
n2o6389.1707;found389.1706.
[0158]
化合物二十二(4av):
[0159]
4-(5-(呋喃-2-基)-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0160]
4-(5-(furan-2-yl)-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0161]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到橙色无定形固体(49.0mg,产率46%),mp153-154℃。
[0162]1hnmr(600mhz,cdcl3)δ12.84(s,1h),11.22(s,1h),7.84(s,1h),7.52(dd,j=8.7,1.4hz,1h),7.48(s,1h),7.45(d,j=1.4hz,1h),7.26-7.24(m,1h),6.53(d,j=3.3hz,1h),6.46(dd,j=3.2,1.7hz,1h),5.05(s,1h),3.89(s,3h),2.39-2.31(m,1h),2.10-2.03(m,1h),1.40-1.31(m,1h),1.24-1.17(m,4h),1.17-1.10(m,1h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.79,160.92,159.90,154.43,141.83,138.56,128.00,127.49,125.16,124.74,117.13,115.83,113.13,111.80,107.91,104.35,64.81,41.12,31.48,22.79,22.44,13.99;hrms(esi)m/z:[m-h]-calcdforc
23h23
n2o6423.1562;found423.1564.
[0163]
化合物二十三(4aw):
[0164]
5-羟基-n-甲氧基-2-羰基-5-戊基-4-(5-(噻吩-2-基)-1h-吲哚-2-基)-2,5-二氢呋喃-3-甲酰胺
[0165]
5-hydroxy-n-methoxy-2-oxo-5-pentyl-4-(5-(thiophen-2-yl)-1h-indol-2-yl)-2,5-dihydrofuran-3-carboxamide
[0166]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到橙色无定形固体(77.7mg,产率71%),mp134-135℃。
[0167]1hnmr(600mhz,cdcl3)δ12.85(s,1h),11.23(s,1h),7.79(s,1h),7.53-7.46(m,2h),7.26-7.24(m,1h),7.24(s,1h),7.20-7.17(m,1h),7.05(dd,j=5.0,3.6hz,1h),5.04(s,1h),3.89(s,3h),2.39-2.32(m,1h),2.12-2.04(m,1h),1.39-1.32(m,1h),1.24-1.16(m,4h),1.16-1.09(m,1h),0.80(t,j=7.0hz,3h);
13
cnmr(150mhz,cdcl3)δ169.77,160.88,159.94,144.95,138.63,128.21,128.15,127.61,127.07,124.32,122.77,119.20,115.69,113.21,107.93,64.83,41.14,31.49,22.81,22.46,14.01;hrms(esi)m/z:[m-h]-calcdforc
23h23
n2o5s439.1333;found439.1336.
[0168]
化合物二十四(4ax):
[0169]
4-(5-氰基-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0170]
4-(5-cyano-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxa mide
[0171]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:4/1

石油/乙酸乙酯:2/1),得到黄色无定形固体(63.3mg,产率66%),mp 204-205℃。
[0172]1h nmr(600mhz,dmso-d6)δ12.62(s,1h),11.75(s,1h),8.38(s,1h),8.34(s, 1h),7.88(d,j=8.6hz,1h),7.62(dd,j=8.7,1.3hz,1h),7.51(s,1h),3.77(s,3h), 2.23-2.13(m,1h),2.05-1.97(m,1h),1.31-1.27(m,1h),1.19-1.14(m,4h), 1.11-1.04(m,1h),0.76(t,j=6.2hz,3h);
13
c nmr(150mhz,dmso-d6)δ167.36, 158.60,156.70,139.06,128.89,128.42,127.42,126.74,120.04,115.77,114.49, 112.35,107.28,102.88,63.60,38.88,30.81,22.31,21.79,13.73;hrms(esi)m/z: [m+h]
+
calcd for c
20h22
n3o5384.1554;found 384.1552.
[0173]
化合物二十五(4ay):
[0174]
甲基2-(2-羟基-4-(甲氧基氨基甲酰)-5-羰基-2-戊基-2,5-二氢呋喃-3-基)-1h-吲哚-5-羧酸酯
[0175]
methyl2-(2-hydroxy-4-(methoxycarbamoyl)-5-oxo-2-pentyl-2,5-dihydrofuran-3-yl)-1h-indole
ꢀ‑
5-carboxylate
[0176]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(75.1mg,产率72%),mp 141-142℃。
[0177]1h nmr(600mhz,cdcl3)δ13.01(s,1h),11.28(s,1h),8.14(s,1h),7.80(dd,j= 8.8,1.2hz,1h),7.47(s,1h),7.25(d,j=8.2hz,1h),5.68(s,1h),3.91(s,3h), 3.88(s,3h),2.35(ddd,j=14.2,12.0,4.4hz,1h),2.04(ddd,j=14.0,12.1,4.4hz, 1h),1.41-1.33(m,1h),1.24-1.16(m,4h),1.15-1.08(m,1h),0.79(t,j=6.9hz, 3h);
13
c nmr(150mhz,cdcl3)δ169.67,168.21,160.53,160.02,140.60,128.28, 127.80,127.01,126.24,122.62,116.49,112.37,110.37,108.08,64.85,52.41,40.87, 31.47,22.77,22.44,13.99;hrms(esi)m/z:[m+h]
+
calcd for c
21h25
n2o
7 417.1656;found 417.1650.
[0178]
化合物二十六(4az):
[0179]
5-羟基-n-甲氧基-4-(3-甲基-1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0180]
5-hydroxy-n-methoxy-4-(3-methyl-1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carbox amide
[0181]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:4/1

石油/乙酸乙酯:2/1),得到黄色无定形固体(15.5mg,产率17%),mp 137-138℃。
[0182]1h nmr(600mhz,cdcl3)δ10.80(s,1h),10.56(s,1h),7.57(d,j=8.1hz,1h), 7.30-7.26(m,1h),7.19(d,j=8.3hz,1h),7.13-7.06(m,1h),6.33(s,1h),3.86(s, 3h),2.36(s,3h),1.98(ddd,j=15.7,11.6,4.5hz,1h),1.65(ddd,j=14.0,11.9,4.0 hz,1h),1.31-1.27(m,1h),1.16-1.02(m,5h),0.74(t,j=7.1hz,3h);
13
c nmr (150mhz,cdcl3)δ169.85,161.09,160.57,138.24,128.87,126.95,124.04,123.92, 120.84,120.38,112.14,111.76,107.80,64.92,37.48,31.34,22.39,22.36,13.89, 12.36;hrms(esi)m/z:[m+h]
+
calcd for c
20h25
n2o5373.1758;found 373.1761.
[0183]
化合物二十七(4ba):
[0184]
4-(3-苯甲基-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0185]
4-(3-benzyl-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carbox amide
[0186]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:4/1

石油/乙酸乙酯2/1),得到黄色无定形固体(32.9mg,产率29%),mp 115-116℃。
[0187]1h nmr(600mhz,cdcl3)δ10.77(s,1h),10.61(s,1h),7.31(d,j=8.2hz,1h), 7.25-7.21(m,2h),7.19-7.15(m,2h),7.14-7.10(m,1h),7.02-6.94(m,3h),6.17(s, 1h),4.38(d,j=16.8hz,1h),4.09(d,j=16.8hz,1h),3.86(s,3h),1.91-1.82(m, 1h),1.55-1.48(m,1h),1.23-1.18(m,1h),1.09-1.03(m,2h),1.01-0.92(m,3h), 0.73(t,j=7.3hz,3h);
13
c nmr(150mhz,cdcl3)δ169.59,161.28,160.46, 140.44,138.32,128.56,128.45,128.41,126.70,126.15,125.28,124.30,121.70, 120.61,112.84,112.16,107.88,64.96,37.54,32.54,31.37,22.39,22.32,14.00; hrms(esi)m/z:[m+h]
+
calcd for c
26h29
n2o5449.2071;found 449.2069.
[0188]
化合物二十八(4bb):
[0189]
n-乙氧基-5-羟基-4-(1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0190]
n-ethoxy-5-hydroxy-4-(1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0191]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸
乙酯:4/1),得到黄色无定形固体(72.7mg,产率78%),mp152-153℃。
[0192]1hnmr(600mhz,cdcl3)δ12.89(s,1h),11.07(s,1h),7.60(d,j=8.1hz,1h),7.49(s,1h),7.36(d,j=8.3hz,1h),7.32-7.28(m,1h),7.11-7.05(m,1h),5.05(s,1h),4.12-3.98(m,2h),2.38-2.29(m,1h),2.11-2.00(m,1h),1.37-1.29(m,4h),1.23-1.15(m,4h),1.15-1.08(m,1h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.91,160.86,159.93,139.15,127.90,127.87,126.93,122.81,121.38,115.68,112.94,109.26,107.88,72.84,41.19,31.48,22.80,22.45,14.01,13.56;hrms(esi)m/z:[m+h]
+
calcdforc
20h25
n2o5373.1758;found373.1759.
[0193]
化合物二十九(4bc):
[0194]
5-羟基-4-(1h-吲哚-2-基)-n-异丙氧基-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0195]
5-hydroxy-4-(1h-indol-2-yl)-n-isopropoxy-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(74.0mg,产率77%),mp134-135℃。
[0196]1hnmr(600mhz,cdcl3)δ12.93(s,1h),10.98(s,1h),7.59(d,j=8.1hz,1h),7.48(s,1h),7.37(d,j=8.4hz,1h),7.33-7.27(m,1h),7.11-7.04(m,1h),4.97(s,1h),4.26-4.18(m,1h),2.33(ddd,j=16.1,11.8,4.5hz,1h),2.05(ddd,j=13.9,12.1,4.2hz,1h),1.35-1.28(m,7h),1.23-1.11(m,5h),0.79(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.97,160.90,159.76,139.13,127.90,127.77,126.99,122.79,121.32,115.58,112.97,109.44,107.84,79.06,41.18,31.49,22.80,22.46,20.67,20.62,14.01;hrms(esi)m/z:[m+h]
+
calcdforc
21h27
n2o5387.1914;found387.1913.
[0197]
化合物三十(4bd):
[0198]
n-(叔-丁氧基)-5-羟基-4-(1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0199]
n-(tert-butoxy)-5-hydroxy-4-(1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0200]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(50.4mg,产率50%),mp139-140℃。
[0201]1hnmr(600mhz,cdcl3)δ13.07(s,1h),10.82(s,1h),7.62(d,j=8.2hz,1h),7.49(s,1h),7.42(d,j=8.4hz,1h),7.35-7.29(m,1h),7.12-7.06(m,1h),4.90(s,1h),2.39-2.30(m,1h),2.11-2.03(m,1h),1.40-1.31(m,10h),1.23-1.11(m,5h),0.80(t,j=6.3hz,3h);
13
cnmr(150mhz,cdcl3)δ170.17,161.12,159.60,139.14,127.92,127.67,127.07,
122.77,121.27,115.47,113.06,109.69,107.82,83.55,41.17,31.49,26.36,22.82,22.47,14.01;hrms(esi)m/z:[m+h]
+
calcdforc
22h29
n2o5401.2071;found401.2069.
[0202]
化合物三十一(4be):
[0203]
n-(苄氧基)-5-羟基-4-(1h-吲哚-2-基)-2-羰基-5-戊基-2,5-二氢呋喃-3-甲酰胺
[0204]
n-(benzyloxy)-5-hydroxy-4-(1h-indol-2-yl)-2-oxo-5-pentyl-2,5-dihydrofuran-3-carboxamide
[0205]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(77.8mg,产率72%),mp129-130℃。
[0206]1hnmr(600mhz,cdcl3)δ12.88(s,1h),11.05(s,1h),7.61(d,j=8.1hz,1h),7.50(s,1h),7.46-7.34(m,6h),7.34-7.29(m,1h),7.12-7.07(m,1h),5.04-4.92(m,2h),2.32(ddd,j=14.1,11.9,4.4hz,1h),2.05(ddd,j=13.9,12.0,4.4hz,1h),1.35-1.29(m,1h),1.23-1.14(m,4h),1.14-1.07(m,1h),0.80(t,j=6.9hz,3h);
13
cnmr(150mhz,cdcl3)δ169.71,160.78,159.88,139.18,134.53,129.26,129.16,128.85,127.92,126.92,122.84,121.43,115.69,112.99,109.28,107.84,78.84,41.19,31.47,22.80,22.47,14.00;hrms(esi)m/z:[m+h]
+
calcdforc
25h27
n2o5435.1914;found435.1911.
[0207]
化合物三十二(4bf):
[0208]
5-乙基-5-羟基-4-(1h-吲哚-2-基)-n-甲氧基-2-羰基-2,5-二氢呋喃-3-甲酰胺
[0209]
5-ethyl-5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-2,5-dihydrofuran-3-carboxamide
[0210]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(54.7mg,产率69%),mp175-176℃。
[0211]1hnmr(600mhz,dmso-d6)δ12.48(s,1h),11.69(s,1h),8.30(s,1h),7.74(d,j=8.1hz,1h),7.67(d,j=8.4hz,1h),7.44(s,1h),7.35-7.31(m,1h),7.14-7.09(m,1h),3.78(s,3h),2.30-2.20(m,1h),2.14-2.05(m,1h),0.76(t,j=7.4hz,3h);
13
cnmr(150mhz,dmso-d6)δ167.97,159.25,157.80,137.97,127.33,126.87,126.32,122.31,120.77,113.05,112.90,112.85,107.68,63.61,32.78,7.45;hrms(esi)m/z:[m+h]
+
calcdforc
16h17
n2o5317.1132;found317.1133.
[0212]
化合物三十三(4bg):
[0213]
5-丁基-5-羟基-4-(1h-吲哚-2-基)-n-甲氧基-2-羰基-2,5-二氢呋喃-3-甲酰胺
[0214]
5-butyl-5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-2,5-dihydrofuran-3-carboxamide
[0215]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(52.8mg,产率61%),mp166-167℃。
[0216]1hnmr(600mhz,cdcl3)δ12.85(s,1h),11.11(s,1h),7.61(d,j=8.1hz,1h),7.51(s,1h),7.36(d,j=8.4hz,1h),7.32-7.28(m,1h),7.10-7.05(m,1h),5.31(s,1h),3.84(s,3h),2.39-2.28(m,1h),2.12-2.02(m,1h),1.32-1.21(m,3h),1.13-1.03(m,1h),0.79(t,j=7.2hz,3h);
13
cnmr(150mhz,cdcl3)δ169.89,160.87,160.09,139.16,127.96,127.88,126.88,122.83,121.44,115.79,112.91,109.06,107.98,64.75,40.97,25.16,22.45,13.87;hrms(esi)m/z:[m+h]
+
calcdforc
18h21
n2o5345.1445;found345.1443.
[0217]
化合物三十四(4bh):
[0218]
5-苯甲基-5-羟基-4-(1h-吲哚-2-基)-n-甲氧基-2-羰基-2,5-二氢呋喃-3-甲酰胺
[0219]
5-benzyl-5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-2,5-dihydrofuran-3-carboxamide
[0220]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色粘稠油状物(33.8mg,产率36%)。
[0221]1hnmr(600mhz,dmso-d6)δ12.62(s,1h),11.44(s,1h),8.53(s,1h),7.81(d,j=8.1hz,1h),7.70(d,j=8.4hz,1h),7.67(s,1h),7.39-7.34(m,1h),7.20-7.13(m,4h),6.96-6.90(m,2h),3.68(s,3h),3.54(d,j=13.7hz,1h),3.45(d,j=13.8hz,1h);
13
cnmr(150mhz,dmso-d6)δ167.62,158.94,158.05,137.99,133.77,130.13,127.96,127.50,127.29,127.05,126.52,122.52,120.85,113.63,112.98,112.71,106.67,63.53,45.73;hrms(esi)m/z:[m+h]
+
calcdforc
21h19
n2o5379.1288;found379.1290.
[0222]
化合物三十五(4bi):
[0223]
5-羟基-4-(1h-吲哚-2-基)-n-甲氧基-2-羰基-5-苯基-2,5-二氢呋喃-3-甲酰胺
[0224]
5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-5-phenyl-2,5-dihydrofuran-3-carboxamide
[0225]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(59.8mg,产率66%),mp214-215℃。
[0226]1hnmr(600mhz,dmso-d6)δ12.41(s,1h),11.80(s,1h),9.08(s,1h),7.65-7.60(m,3h),7.58(d,j=8.1hz,1h),7.43-7.39(m,2h),7.39-7.35(m,1h),7.29-7.25(m,1h),7.05-7.01(m,1h),6.99(s,1h),3.83(s,3h);
13
cnmr(150mhz,dmso-d6)δ168.28,159.25,
157.84,138.75,137.76,129.28,128.62,127.06,126.90,126.35, 125.33,122.18,120.75,113.60,112.99,112.87,105.45,63.69;hrms(esi)m/z:[m +h]
+
calcd for c
20h17
n2o5365.1132;found 365.1133.
[0227]
化合物三十六(4bj):
[0228]
4-(4-氟-1h-吲哚-2-基)-5-羟基-n-甲氧基-2-羰基-5-苯基-2,5-二氢呋喃-3-甲酰胺
[0229]
4-(4-fluoro-1h-indol-2-yl)-5-hydroxy-n-methoxy-2-oxo-5-phenyl-2,5-dihydrofuran-3-carbox amide
[0230]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:4/1

石油/乙酸乙酯:2/1),得到黄色无定形固体(64.6mg,产率68%),mp 236-237℃。
[0231]1h nmr(600mhz,dmso-d6)δ12.54(s,1h),11.85(s,1h),9.14(s,1h),7.63(d,j =7.7hz,2h),7.50(d,j=8.4hz,1h),7.44-7.36(m,3h),7.27-7.21(m,1h),6.93(s, 1h),6.82(dd,j=10.3,7.9hz,1h),3.83(s,3h);
13
c nmr(150mhz,dmso-d6)δ 167.96,158.89,157.00,155.78(d,j
c-f
=248.7hz),139.76(d,j=9.6hz),138.34, 129.41,128.68,127.14,126.65(d,j
c-f
=7.5hz),125.35,116.66(d,j
c-f
=22.2hz), 114.57,109.62(d,j
c-f
=3.6hz),107.79,105.40,104.70(d,j
c-f
=18.0hz),63.67; hrms(esi)m/z:[m+h]
+
calcd for c
20h16
fn2o5383.1038;found 383.1037.
[0232]
化合物三十七(4bk):
[0233]
5-羟基-n-甲氧基-4-(4-甲基-1h-吲哚-2-基)-2-羰基-5-苯基-2,5-二氢呋喃-3-甲酰胺
[0234]
5-hydroxy-n-methoxy-4-(4-methyl-1h-indol-2-yl)-2-oxo-5-phenyl-2,5-dihydrofuran-3-carbo xamide
[0235]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色粘稠油状物(77.2mg,产率82%)。
[0236]1h nmr(600mhz,dmso-d6)δ12.40(s,1h),11.79(s,1h),9.09(s,1h),7.63(d,j =7.6hz,2h),7.45-7.39(m,3h),7.39-7.35(m,1h),7.19-7.14(m,1h),7.00(s,1h), 6.82(d,j=6.9hz,1h),3.83(s,3h),2.34(s,3h);
13
c nmr(150mhz,dmso-d6)δ 168.36,159.31,157.84,138.79,137.66,131.05,129.25,128.56,127.43,126.58, 126.40,125.30,120.51,112.63,111.91,110.45,105.40,63.65,18.19;hrms(esi) m/z:[m+h]
+
calcd for c
21h19
n2o5379.1288;found 379.1290.
甲酰胺
[0249]
5-(4-chlorophenyl)-5-hydroxy-4-(1h-indol-2-yl)-n-methoxy-2-oxo-2,5-dihydrofuran-3-carbo xamide
[0250]
将反应混合物直接在硅胶上进行快速色谱纯化(石油/乙酸乙酯:8/1

石油/乙酸乙酯:4/1),得到黄色无定形固体(59.9mg,产率60%),mp 248-249℃。
[0251]1h nmr(600mhz,dmso-d6)δ12.40(s,1h),11.79(s,1h),9.19(s,1h),7.67-7.62 (m,3h),7.59(d,j=8.1hz,1h),7.47(d,j=8.7hz,2h),7.31-7.25(m,1h), 7.07-7.00(m,1h),6.97(s,1h),3.83(s,3h);
13
c nmr(150mhz,dmso-d6)δ 168.11,159.17,157.34,137.85,137.83,134.05,128.71,127.46,127.11,126.75, 126.45,122.24,120.82,113.59,113.17,112.91,104.89,63.71;hrms(esi)m/z:[m +h]
+
calcd for c
20h16
cln2o5399.0742;found 399.0745。
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