CN108586311B - 一种3-硫醚吲哚或3-硒醚吲哚的制备方法 - Google Patents
一种3-硫醚吲哚或3-硒醚吲哚的制备方法 Download PDFInfo
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Classifications
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
- C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
- C07D209/04—Indoles; Hydrogenated indoles
- C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D401/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom
- C07D401/02—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings
- C07D401/12—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, at least one ring being a six-membered ring with only one nitrogen atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
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Abstract
本发明公开了一种3‑硫醚吲哚或3‑硒醚吲哚的制备方法,包括:在DMF溶剂中,用叔丁醇钾作碱,以吲哚类化合物与二硫醚、二硒醚为底物,合成3‑硫醚吲哚和3‑硒醚吲哚。本发明反应原料廉价易得,制备方法简单,用叔丁醇钾作碱,室温下反应,反应时间短,产率高,操作简单,适用于3‑硫醚吲哚和3‑硒醚吲哚两类化合物的合成。本发明方法可用于合成一系列的3‑硫醚吲哚和3‑硒醚吲哚,合成的产物为活性化合物。
Description
技术领域
本发明属于有机合成领域,具体涉及一种由叔丁醇钾催化的在室温下制备3-硫醚吲哚或3-硒醚吲哚的方法。
背景技术
吲哚是一类非常重要的杂环化合物,其作为优势骨架广泛分布于天然产物、药物分子、农药、染料以及功能材料分子中。3-硫醚吲哚、3-硒醚吲哚作为吲哚类化合物,它们的生物活性得到了广泛的关注和研究,在生物化学和药学中的关键作用已被证实。该类化合物已展示出很好的抗肿瘤、抗菌、抗肥胖、抗HIV、抗炎等活性。最近的研究表明,3-芳基硫醚吲哚是一个潜在的微管蛋白抑制剂,可用于抑制癌细胞的增值。
已报道的3-硫醚吲哚的合成通常有两种途径,一种途径是直接在吲哚的碳三位硫化,通常使用硫醚、单质硫、硫醇等作为硫化试剂,在金属催化剂(如三价铁、铜、溴化镁等)、碱(如氢氧化钠、氢氧化钾、碳酸钾等)或非金属试剂(如碘化铵、过硫酸铵等)作用下,完成吲哚化合物碳三位的硫化。另一种途径则是以有机硫化合物作为亲电试剂,通过与2- 炔基苯胺的亲电环化得到目标化合物。这两类合成方法目前主要存在的不足是:反应时间长、需要使用毒性试剂、金属试剂等。
相较于3-硫醚吲哚,3-硒醚吲哚的合成方法报道较少。现有的合成该类化合物的反应机理和条件与合成3-硫醚吲哚类似(3-硒醚吲哚的合成以硒醚、单质硒作为硒化试剂),所以也存在反应效率低、需要使用金属试剂等特征。
因此,发展一种反应效率高、反应条件温和,且同时可合成3-硫醚吲哚和3-硒醚吲哚化合物的合成方法就显得十分有意义。
发明内容
本发明提供一种以叔丁醇钾作为碱,以吲哚和二硫醚、二硒醚作为原料的直接合成3-硫醚吲哚或3-硒醚吲哚化合物的方法,该方法原料易得,制备方法简单。
一种3-硫醚吲哚或3-硒醚吲哚的制备方法,包括:在DMF溶剂中,室温下,以叔丁醇钾作促进剂,吲哚类化合物和硫醚或硒醚进行反应,反应结束后经过后处理得到所述的3-硫醚吲哚或3-硒醚吲哚;
在化学式(I)、(II)、(III)、(IV)、(V)中,R1为氢、甲基、甲氧基、氨基、卤素;R2为氢、甲基、甲氧基、卤素、硝基、氨基、三氟甲基; R3为2-噻吩基、4-吡啶基;R4为叔丁氧基羰基;R5为氢、甲氧基、甲基、卤素、氨基;R6为氢、甲氧基、甲基、卤素、氰基、硝基、氨基;R7为萘基、4-吡啶基。
所述的吲哚类化合物具有化学式(VI)、(ⅤII)的结构:
在化学式(VI)、(ⅤII)中,R4为叔丁氧基羰基;R8为氢、甲基、甲氧基、氨基、卤素。
所述的硫醚具有化学式(VIII)、(IX)的结构:
在化学式(VIII)、(IX)中,R2为氢、甲基、甲氧基、卤素、硝基、氨基、三氟甲基;R3为2-噻吩基、4-吡啶基。
所述的硒醚具有化学式(X)、(XI)的结构:
在化学式(X)、(XI)中,R6为氢、甲氧基、甲基、卤素、氰基、硝基、氨基;R7为萘基、4-吡啶基。
优选地,所述的碱为叔丁醇钾,其它种类的碱,包括无机碱和有机碱均使反应产率降低或无产物生成。
所述的吲哚类化合物与所述的叔丁醇钾的摩尔比为1:2.0,以提高反应的产率。增加、减少叔丁醇钾的量均会使反应产率降低。
反应溶剂为DMF,其它种类的溶剂,包括极性溶剂和非极性溶剂均使反应产率降低或无产物生成。
所述的合成的反应方程式为:
其中,R1为氢、甲基、甲氧基、氨基、卤素;R2为氢、甲基、甲氧基、卤素、硝基、氨基、三氟甲基;R3为2-噻吩基、4-吡啶基;R4为叔丁氧基羰基;R5为氢、甲氧基、甲基、卤素、氨基;R6为氢、甲氧基、甲基、卤素、氰基、硝基、氨基;R7为萘基、4-吡啶基。
所述的合成反应原理为:吲哚碳三位亲核进攻二硫醚、二硒醚的硫硫单键、硒硒单键,然后在叔丁醇钾作用下去质子化生成3-硫醚吲哚和3- 硒醚吲哚。
与现有技术相比,本发明具有以下优点:
本发明方法以吲哚与二硫醚、二硒醚为底物进行反应合成3-硫醚吲哚和3-硒醚吲哚,反应原料廉价易得,制备方法简单;叔丁醇钾为常用碱,廉价易得,因此反应成本低。反应在室温下进行,反应条件温和。反应时间短,产率高,操作简单。本发明方法可适用于合成不同种类的3-硫醚吲哚和3-硒醚吲哚,合成的产物具有生物活性。
具体实施方式
下面结合实施例来详细说明本发明,但本发明并不仅限于此。
实施例1
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二苯二硫醚(0.3 mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物(CAS号为:54491-43-9)43.6mg,产率为98%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.40(brs,1H),7.63(d,J=7.9Hz,1H), 7.49(d,J=2.1Hz,1H),7.45(d,J=8.2Hz,1H),7.28(t,J=7.6Hz,1H),7.20 –7.16(m,3H),7.13–7.11(m,2H),7.07(t,J=7.2Hz,1H)ppm;13C NMR (126MHz,CDCl3)δ139.20,136.47,130.63,129.08,128.67,125.85,124.76, 123.03,120.89,119.65,111.54,102.87ppm.
实施例2
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二苯二硫醚(0.3 mmol)、叔丁醇钾(0.4mmol)和DMSO(2.0mL),室温搅拌。TLC跟踪检测反应。2小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物26.7mg,产率为60%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.40(brs,1H),7.63(d,J=7.9Hz,1H), 7.49(d,J=2.1Hz,1H),7.45(d,J=8.2Hz,1H),7.28(t,J=7.6Hz,1H),7.20 –7.16(m,3H),7.13–7.11(m,2H),7.07(t,J=7.2Hz,1H)ppm;13C NMR (126MHz,CDCl3)δ139.20,136.47,130.63,129.08,128.67,125.85,124.76, 123.03,120.89,119.65,111.54,102.87ppm.
实施例3
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二苯二硫醚(0.3 mmol)、氢氧化钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC跟踪检测反应。4小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物25.4mg,产率为57%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.40(brs,1H),7.63(d,J=7.9Hz,1H), 7.49(d,J=2.1Hz,1H),7.45(d,J=8.2Hz,1H),7.28(t,J=7.6Hz,1H),7.20 –7.16(m,3H),7.13–7.11(m,2H),7.07(t,J=7.2Hz,1H)ppm;13C NMR (126MHz,CDCl3)δ139.20,136.47,130.63,129.08,128.67,125.85,124.76, 123.03,120.89,119.65,111.54,102.87ppm.
实施例4
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(2-噻吩)二硫醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。2小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物33.2mg,产率为72%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.11(brs,1H),7.75(d,J=7.7Hz,1H), 7.32(d,J=2.6Hz,1H),7.27(d,J=7.8Hz,1H),7.19–7.13(m,2H),7.09 (dd,J=5.3,0.9Hz,1H),7.05(dd,J=3.5,1.0Hz,1H),6.82–6.80(m,1H) ppm;13C NMR(126MHz,CDCl3)δ137.91,136.10,129.77,129.23,128.45, 127.26,127.20,122.91,120.77,119.36,111.52,106.60ppm.
实施例5
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(4-氨基苯)二硫醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。 TLC跟踪检测反应。2小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(50%的乙酸乙酯石油醚溶液),得到产物31.8mg,产率为70%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO-d6)δ11.46(brs,1H),7.63(s,1H),7.48(d,J =7.4Hz,1H),7.42(d,J=8.0Hz,1H),7.13(t,J=7.4Hz,1H),7.04(t,J= 7.4Hz,1H),6.98–6.96(m,2H),6.47–6.45(m,2H),5.24(brs,2H)ppm;13C NMR(126MHz,DMSO-d6)δ146.75,136.37,130.57,129.82,128.53,122.69, 121.66,119.52,118.40,114.52,111.92,103.51ppm.
实施例6
4mL的反应瓶中分别加入2-甲基吲哚(0.2mmol)、1,2-二苯二硫醚 (0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物44.8mg,产率为94%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.21(brs,1H),7.51(d,J=7.8Hz,1H), 7.27(d,J=8.0Hz,1H),7.18–7.07(m,4H),7.01–6.98(m,3H),2.42(s,3H) ppm;13C NMR(126MHz,CDCl3)δ141.13,139.32,135.42,130.25,128.64, 125.47,124.47,122.10,120.62,118.90,110.65,99.21,12.06ppm.
实施例7
4mL的反应瓶中分别加入6-氨基吲哚(0.2mmol)、1,2-二苯二硫醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。2小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(50%的乙酸乙酯石油醚溶液),得到产物32.6mg,产率为68%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO-d6)δ11.07(brs,1H),7.39(d,J=1.7Hz, 1H),7.17(t,J=7.6Hz,2H),7.05–7.00(m,4H),6.64(s,1H),6.44(d,J=8.3 Hz,1H),4.90(brs,2H)ppm;13CNMR(126MHz,DMSO-d6)δ144.76, 139.64,138.37,128.88,128.61,125.07,124.43,120.07,118.38,110.72,98.79, 95.55ppm.
实施例8
4mL的反应瓶中分别加入7-甲氧基吲哚(0.2mmol)、1,2-二苯二硫醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。2小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(6%的乙酸乙酯石油醚溶液),得到产物32mg,产率为63%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.68(brs,1H),7.45(d,J=2.5Hz,1H), 7.22(d,J=8.0Hz,1H),7.18–7.15(m,2H),7.12–7.04(m,4H),6.71(d,J= 7.7Hz,1H),3.99(s,3H)ppm;13C NMR(126MHz,CDCl3)δ146.29,139.35, 130.56,130.14,128.63,127.06,125.84,124.68,121.28,112.20,103.12, 102.77,55.40ppm.
实施例9
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(3-三氟甲基苯) 二硫醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。 TLC跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物57.4mg,产率为98%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.49(brs,1H),7.63(d,J=7.9Hz,1H), 7.57(s,1H),7.51(s,1H),7.47(d,J=8.1Hz,1H),7.36–7.29(m,3H),7.23– 7.19(m,2H)ppm;13C NMR(126MHz,CDCl3)δ136.43,135.23,131.77, 131.46,131.13(q,J=32.1Hz),129.64,129.17,125.11(q,J=3.8Hz),124.88, 123.18,122.38(q,J=3.6Hz),121.10,120.09,111.49,97.30ppm.
实施例10
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二苯二硒醚(0.3 mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物(CAS号为:85677-00-5)47.2mg,产率为87%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.45(brs,1H),7.65(d,J=7.9Hz,1H), 7.47(d,J=2.5Hz,1H),7.44(d,J=8.2Hz,1H),7.29–7.24(m,3H),7.20– 7.17(m,1H),7.16–7.09(m,3H)ppm;13C NMR(126MHz,CDCl3)δ136.40, 133.78,131.18,129.97,128.92,128.70,125.58,122.91,120.83,120.35, 111.34,98.21ppm.
实施例11
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(2-萘)二硒醚 (0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物51.4mg,产率为80%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO-d6)δ11.75(brs,1H),7.82(d,J=2.5Hz, 1H),7.80–7.78(m,1H),7.72–7.70(m,2H),7.66–7.64(m,1H),7.52(d,J =8.1Hz,1H),7.44–7.39(m,3H),7.29(dd,J=8.6,1.3Hz,1H),7.18(t,J= 7.5Hz,1H),7.05(t,J=7.5Hz,1H)ppm;13C NMR(126MHz,DMSO-d6)δ 136.58,133.37,132.72,131.23,131.13,129.43,128.20,127.51,126.58, 126.49,126.41,126.05,125.33,121.92,119.94,118.89,112.04,94.95ppm.
实施例12
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(3-甲氧基苯) 二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。 TLC跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物34.4mg,产率为57%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.48(brs,1H),7.65(d,J=7.9Hz,1H), 7.45(s,1H),7.42(d,J=8.1Hz,1H),7.26(t,J=7.4Hz,1H),7.18(t,J=7.4 Hz,1H),7.06(t,J=7.9Hz,1H),6.85–6.81(m,2H),6.65(d,J=8.1Hz,1H), 3.67(s,3H)ppm;13C NMR(126MHz,CDCl3)δ159.95,136.43,135.09, 131.24,129.99,129.65,122.92,121.09,120.85,120.34,114.41,111.34, 111.29,98.14,55.10ppm.
实施例13
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(4-吡啶)二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(33%的乙酸乙酯石油醚溶液),得到产物48.4mg,产率为89%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO-d6)δ11.85(brs,1H),8.22(d,J=5.5Hz, 2H),7.80(d,J=2.5Hz,1H),7.53(d,J=7.6Hz,1H),7.36(d,J=7.6Hz,1H), 7.21(t,J=7.6Hz,1H),7.11–7.07(m,3H)ppm;13C NMR(126MHz, DMSO-d6)δ149.12,146.22,136.64,133.34,129.10,122.41,122.14,120.24, 118.64,112.21,92.47ppm.
实施例14
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(3-氯苯)二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物54.4mg,产率为89%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.43(brs,1H),7.64(d,J=7.9Hz,1H), 7.48(d,J=2.3Hz,1H),7.45(d,J=8.2Hz,1H),7.30(t,J=7.6Hz,1H),7.23 –7.20(m,2H),7.12–7.03(m,3H)ppm;13C NMR(126MHz,CDCl3)δ 136.39,135.80,134.79,131.43,129.85,129.73,128.21,126.65,125.76, 123.11,121.05,120.17,111.44,97.52ppm.
实施例15
4mL的反应瓶中分别加入吲哚(0.2mmol)、1,2-二(2-硝基苯)二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。 TLC跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(17%的乙酸乙酯石油醚溶液),得到产物(新化合物)60.8mg,产率为96%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO-d6)δ11.89(brs,1H),8.33(d,J=7.9Hz, 1H),7.83(d,J=2.2Hz,1H),7.55(d,J=8.2Hz,1H),7.44–7.37(m,2H), 7.34(d,J=7.9Hz,1H),7.22(t,J=7.5Hz,1H),7.08(t,J=7.4Hz,1H),6.96 (d,J=7.8Hz,1H)ppm;13C NMR(126MHz,DMSO-d6)δ145.26,136.84, 135.19,134.18,133.90,129.43,129.25,126.23,126.02,122.23,120.33, 118.73,112.25,95.24ppm.
体外抑制炎症因子表达活性测试:培养小鼠巨噬细胞(RAW264.7) 和原代腹腔巨噬细胞,加入本实施产物(10μM)处理2h,再加入LPS (0.5μg/ml)孵育刺激22小时,收集培养液和细胞裂解液,培养液中的炎症因子含量分别用TNF-α和IL-6ELISA试剂盒(eBioscience,CA, USA)进行检测;细胞裂解液中的蛋白质含量利用酶标仪检测。所获得的炎症因子浓度用相应的蛋白浓度定量,对比LPS模型组计算对炎症因子的抑制率。进一步利用梯度剂量考察浓度依赖关系,计算抗炎IC50值。
最终得到化合物的IC50IL-6=5.379μM,IC50TNF-α=9.070μM,表明此化合物具有抗炎活性。
实施例16
4mL的反应瓶中分别加入1-叔丁氧基羰基吲哚(0.2mmol)、1,2- 二苯二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC跟踪检测反应。8小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(100%的石油醚溶液),得到产物52.8mg,产率为71%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.21(d,J=7.8Hz,1H),7.90(s,1H),7.55 (d,J=7.8Hz,1H),7.37(t,J=7.8Hz,1H),7.33–7.32(m,2H),7.26(t,J= 7.5Hz,1H),7.20–7.15(m,3H),1.70(s,9H)ppm;13CNMR(126MHz, CDCl3)δ149.07,135.72,131.85,129.64,129.09,126.20,124.98,123.24, 120.72,115.20,104.58,84.29,28.15ppm.
实施例17
4mL的反应瓶中分别加入4-甲氧基吲哚(0.2mmol)、1,2-二苯二硒醚(0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。0.5小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(11%的乙酸乙酯石油醚溶液),得到产物60.2mg,产率为95%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.31(brs,1H),7.39(d,J=7.2Hz,2H), 7.20–7.13(m,5H),7.02(d,J=8.1Hz,1H),6.55(d,J=7.8Hz,1H),3.77(s, 3H)ppm;13C NMR(126MHz,CDCl3)δ154.59,138.35,134.62,130.01, 128.99,128.73,125.72,123.66,118.97,104.57,101.15,97.01,55.41ppm.
实施例18
4mL的反应瓶中分别加入6-氨基吲哚(0.2mmol)、1,2-二苯二硒醚 (0.3mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC 跟踪检测反应。1小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(50%的乙酸乙酯石油醚溶液),得到产物48.2mg,产率为80%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,DMSO)δ11.06(brs,1H),7.35(s,1H),7.16–7.15 (m,4H),7.11–7.07(m,1H),7.06–7.03(m,1H),6.64(d,J=4.4Hz,1H), 6.46–6.43(m,1H),4.87(brs,2H)ppm;13C NMR(126MHz,DMSO)δ144.65,138.21,134.08,129.22,128.82,127.85,125.24,121.02,119.04, 110.67,95.30,94.64ppm.
实施例19
4mL的反应瓶中分别加入7-氟吲哚(0.2mmol)、1,2-二苯二硒醚(0.3 mmol)、叔丁醇钾(0.4mmol)和DMF(2.0mL),室温搅拌。TLC跟踪检测反应。0.5小时后,原料完全转化。反应体系中加入水和二氯甲烷,分离有机层。用二氯甲烷将水层洗两次,结合所有有机层,并用水洗两次。有机层用无水硫酸钠干燥,浓缩,柱层析分离(9%的乙酸乙酯石油醚溶液),得到产物57.2mg,产率为94%,反应过程如下式所示:
对本实施例制备得到的产物进行核磁共振分析:
1H NMR(500MHz,CDCl3)δ8.59(brs,1H),7.50(s,1H),7.41(d,J= 7.9Hz,1H),7.25(d,J=9.0Hz,2H),7.17–7.07(m,4H),7.01–6.97(m,1H) ppm;13C NMR(126MHz,CDCl3)δ149.42(d,J=245.2Hz),133.52(d,J= 4.4Hz),133.29,131.64,129.00,128.86,125.80,124.78(d,J=13.3Hz), 121.03(d,J=6.2Hz),116.13(d,J=3.5Hz),107.74(d,J=15.9Hz),99.22 ppm。
Claims (2)
2.如权利要求1所述的3-硒醚吲哚的制备方法,其特征在于,所述的吲哚类化合物与所述的硒醚的摩尔比为1:1.1~1.2;所述的吲哚类化合物与所述的叔丁醇钾的摩尔比为1:2.0~2.2。
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