新型含1,3,4-噻二唑的硫色满酮衍生物的合成及其抗真菌活性*

2016-01-17 08:53梁国超钟一凡韩晓燕宋亚丽河北大学a药学院河北省药品质量控制重点实验室教育部药物化学与分子诊断重点实验室河北保定071002
合成化学 2015年12期
关键词:乙酰胺酰胺衍生物

梁国超,周 冠,钟一凡,韩晓燕,宋亚丽(1.河北大学a.药学院河北省药品质量控制重点实验室; b.教育部药物化学与分子诊断重点实验室,河北保定 071002)



新型含1,3,4-噻二唑的硫色满酮衍生物的合成及其抗真菌活性*

梁国超1a,1b,周冠1a,1b,钟一凡1a,1b,韩晓燕1a,1b,宋亚丽1a,1b
(1.河北大学a.药学院河北省药品质量控制重点实验室; b.教育部药物化学与分子诊断重点实验室,河北保定071002)

摘要:以取代苯硫酚和顺丁烯二酸酐为原料,经迈克尔加成反应制得2-羧基-硫色满酮衍生物(2a~2d); 2a~2d分别与氨基硫脲反应制得2-(5-氨基-1,3,4-噻二唑-2-基)硫色满-4-酮衍生物(3a~3d); 3a~3d与酰氯经酰化反应合成了14个新型的含1,3,4-噻二唑的硫色满酮衍生物(5a~5n),其结构经1H NMR,13C NMR和HRESI-MS表征。采用微量稀释法测定了5a~5n的抗真菌活性。结果表明:部分化合物对絮状表皮癣菌和总状毛霉菌有较好的抑制活性,优于阳性对照药氟康唑。

关键词:硫色满酮; 1,3,4-噻二唑;合成;抗真菌活性

课题;河北大学自然科学基金资助项目(2010-194)

通信联系人:宋亚丽,教授,E-mail:yalisong@ hbu.edu.cn

1,3,4-噻二唑是许多天然产物和药物中的重要结构片段,具有抗菌和抗真菌[1]、抗炎[2]、抗肿瘤[3]和抗病毒[4]等生物活性。

Scheme 1

Matysiak J等[1]合成了一系列5-取代-2-(2,4-二羟基苯基)-1,3,4-噻二唑衍生物(Ⅰ),并对其进行了抗念珠菌活性测定。结果显示:当噻二唑的2-位取代基为甲基和苯基时,Ⅰ显示出较高的抗真菌活性。Rebolledo C L等[5]合成了辣椒素类似物——1,3,4-噻二唑烷基酰胺衍生物(Ⅱ),并测定了其对HEK-293T细胞的TRPV1受体生物活性。结果表明:Ⅱ是瞬时受体TRPV1的潜在拮抗剂,可作为潜在的抗炎止痛药物。Shen L H等[6]合成了一系列1,3,4-噻二唑类N-甲基秋水仙素酰胺衍生物(Ⅲ),并对Ⅲ的抗癌活性进行了测定。结果显示,多数目标化合物具有较好的抗癌活性,对所筛选癌细胞的抑制性高于秋水仙素。

硫色满酮类化合物以多种形式存在于自然界的植物体中[7],具有抗炎、抗菌[8-9]及抗癌[10]等生物活性。目前,人们对此类化合物的合成和生物活性已做了大量研究,合成了多种硫色满酮的衍生物。研究结果显示:3-位Mannich碱取代[8-9],3-位次苄基取代[11],3-位烃基取代[12]及2-烷基取代[13]的硫色满酮衍生物,大部分都有很好的抗癌抗真菌活性。

根据药物活性基团的叠加原理,本文以取代苯硫酚(1a~1d)和顺丁烯二酸酐为原料,经迈克尔加成反应制得2-羧基-硫色满酮衍生物(2a~2d); 2a~2d分别与氨基硫脲反应制得2-(5-氨基-1,3,4-噻二唑-2-基)硫色满-4-酮衍生物(3a~3d); 3a~3d与酰氯(4a,4e,4g,4k和4m)经酰化反应合成了14个新型的含1,3,4-噻二唑的硫色满酮衍生物(5a~5n,Scheme 1),其结构经1H NMR,13C NMR和HR-ESI-MS表征。采用微量稀释法对测定了5a~5n对5种真菌[新生隐球菌(C.n),白色念珠菌(C.a),絮状表皮癣菌(E.f),总状毛霉(M.r)和克柔念珠菌(C.k)]的抑制活性。

1 实验部分

1.1仪器与试剂

SGWX-4型显微熔点仪(温度未校正); Bruker AVШ-600 MHz型核磁共振仪(DMSO-d6为溶剂,TMS为内标); Bruker Apex Ultra 7.0 T型傅里叶变换离子回旋质谱仪。

C.n,C.a,E.f,M.r和C.k,中国医学科学院菌种保藏中心;其余所用试剂均为分析纯。

1.2合成

(1)2a~2d的合成通法

在圆底烧瓶中加入1a~1d 50 mmol,顺丁烯二酸酐4.9 g(50 mmol)和甲苯15 mL,搅拌下于50℃滴加三乙胺1 mL的甲苯(5 mL)溶液,滴毕,于70℃反应20 min。减压蒸除溶剂,残余物用二氯甲烷50 mL溶解。冰浴冷却下,缓慢加入无水三氯化铝10.0 g(75 mmol),反应2 h(TLC检测)。加入二氯甲烷100 mL稀释,依次加入冰块和浓盐酸20mL,析出沉淀。抽滤,滤饼用95%乙醇重结晶两次得淡黄色粉末2a~2d,收率80%~87%。

6-氯-2-羧基硫色满-4-酮(2b):收率84%,m.p.134℃~136℃;1H NMR δ:7.91(d,J=2.4 Hz,1H,ArH),7.57(dd,J=8.4 Hz,2.4 Hz,1H,ArH),7.43(d,J=8.4 Hz,1H,ArH),5.21(t,J=4.8 Hz,1H,2-H),3.38(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.30(dd,J=16.8 Hz,4.8 Hz,1H,3-H);13C NMR δ:157.60,137.38,133.89,132.17,130.98,130.60,127.61,115.54,42.97,39.24; HR-ESI-MS m/z:Calcd for C10H8O3SCl{[M + H]+} 242.980 4,found 242.978 9。

(2)3a~3d的合成通法

在反应瓶中加入氨基硫脲0.91 g(10 mmol),2a~2d 10 mmol和三氯氧磷15 mL,搅拌使其溶解;于80℃反应10 min。冷却至室温,冰水浴冷却下于30 min内缓缓滴加水45 mL,滴毕,于80℃反应3 h。反应液冷却至室温,倒入冰水中,搅拌出现沉淀。冰水浴冷却下用1 mol·L-1NaOH溶液调至pH 8~9,析出大量棕色沉淀;抽滤,滤饼用混合溶剂[V(DMF)∶V(H2O)=1∶2]重结晶得棕黄色粉末3a~3d,收率50%~65%。

2-氨基-5-(6-氟-硫色满-4-酮-2-基)-[1,3,4]噻二唑(3a):收率54%,m.p.160℃~161℃;1H NMR δ:7.70(dd,J=8.4 Hz,2.8 Hz,1H,ArH),7.44(dd,J=8.4 Hz,5.4 Hz,1H,ArH),7.43~7.40(m,1H,ArH),7.25(s,2H,NH2),5.19(t,J=4.8 Hz,1H,2-H),3.37(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.29(dd,J=16.8 Hz,4.8 Hz,1H,3-H);13C NMR δ:191.42,170.01,161.45,159.83,157.76,134.02,134.00,132.47,132.43,130.90,130.85,122.07,121.92,114.35,114.20,42.99,39.30; HR-ESI-MS m/z:Calcd for C11H9N3OS2F{[M + H]+} 282.009 3,found 282.007 5。

(3)5a~5n的合成通法

在圆底烧瓶中加入3a~3d 10 mmol,三乙胺1.01 g(10 mmol)和DMF 50 mL,搅拌使其溶解;于室温缓慢滴加4 12 mmol的DMF(10 mL)溶液,滴毕,反应0.5 h~1.0 h。加水20 mL,有沉淀析出。抽滤,滤饼用混合溶剂[V(乙醇)∶V(DMF)=1∶5]重结晶得淡棕色粉末5a~5n。

N-5-(6-氟-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-乙酰胺(5a):收率90%,m.p.260℃~262 ℃;1H NMR δ:12.47(s,1H,NH),7.71(dd,J=9.5 Hz,2.8 Hz,1H,ArH),7.48~7.39(m,2H,ArH),5.40(t,J=5.4 Hz,1H,2-H),3.48(dd,J=17.4 Hz,5.4 Hz,1H,3-H),3.38(dd,J=17.4 Hz,5.4 Hz,1H,3-H),2.15(s,3H,COCH3);13C NMR δ:191.42,169.28,164.02,161.48,159.96,159.86,133.79,133.77,132.40,132.36,130.95,130.90,122.18,122.03,114.38,114.23,42.84,38.77,22.76.HR-ESI-MS m/z:Calcd for C13H11N3O2S2F{[M + H]+} 324.027 1,found 324.026 7。

N-5-(6-氯-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-乙酰胺(5b):收率85%,m.p.250℃~252 ℃;1H NMR δ:12.49(s,1H,NH),7.92(d,J=2.4 Hz,1H,ArH),7.56(dd,J=8.4 Hz,2.4 Hz,1H,ArH),7.44(d,J=8.4 Hz,1H,ArH),5.42(t,J=4.8 Hz,1H,2-H),3.47(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.40(dd,J=17.4 Hz,4.8 Hz,1H,3-H),2.15(s,3H,COCH3);13C NMR δ:195.90,173.97,168.59,164.76,141.94,138.78,136.83,135.82,135.40,132.38,47.54,43.44,27.54; HR-ESI-MS m/z:Calcd for C13H11N3O2S2Cl{[M + H]+} 339.997 6,found 339.998 2。

N-5-(6,8-二甲基-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-乙酰胺(5c):收率90%,m.p.284℃~285℃;1H NMR δ:12.47(s,1H,NH),7.69(s,1H,ArH),7.27(s,1H,ArH),5.36(t,J=4.8 Hz,1H,2-H),3.43(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.32(dd,J=16.8 Hz,4.8 Hz,1H,3-H),2.26(s,3H,ArCH3),2.22(s,3H,ArCH3),2.14(s,3H,COCH3);13C NMR δ:191.89,168.00,165.39,160.09,136.74,135.71,135.09,133.24,130.09,126.19,42.79,38.02,21.06,20.46,19.63; HR-ESI-MS m/z:Calcd for C15H16N3O2S2{[M +H]+}334.067 8,found 334.068 0。

N-5-(6-甲基-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-乙酰胺(5d):收率85%,m.p.249℃~252℃;1H NMR δ:12.46(s,1H,NH),7.80(d,J=1.8 Hz,1H,ArH),7.33(dd,J=8.4 Hz,1.8 Hz,1H,ArH),7.26(d,J=8.4 Hz,1H,ArH),5.33(t,J=4.8 Hz,1H,2-H),3.45(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.35(dd,J=16.8 Hz,4.8 Hz,1H,3-H),2.29(s,3H,ArCH3),2.14(s,3H,COCH3);13C NMR δ:192.17,169.16,164.42,159.84,135.87,135.31,134.81,130.68,128.70,128.43,43.41,38.88,22.78,20.82; HR-ESI-MS m/z:Calcd for C14H14N3O2S2{[M +H]+}320.052 2,found 320.052 9。

N-5-(6-氯-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-苯甲酰胺(5e):收率80%,m.p.362℃~365 ℃;1H NMR δ:12.98(s,1H,NH),8.07(d,J=7.2 Hz,2H,ArH),7.94(d,J=2.4 Hz,1H,ArH),7.69~7.43(m,5H,PhH),5.48(t,J=4.8 Hz,1H,2-H),3.52(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.43(dd,J=17.4 Hz,4.8 Hz,1H,3-H);13C NMR δ:191.20,166.45,164.33,160.98,137.23,134.03,133.50,132.10,131.13,130.66,129.72,129.09,128.87,127.66,42.84,38.78; HR-ESI-MS m/z:Calcd for C18H13N3O2S2Cl{[M + H]+}402.013 2,found 402.013 1。

N-5-(6,8-二甲基-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-苯甲酰胺(5f):收率80%,m.p.343℃~345℃;1H NMR δ:12.98(s,1H,NH),8.07(dd,J=8.4 Hz,1.2 Hz,2H,ArH),7.95(d,J=8.4 Hz,1H,ArH),8.08~7.26(m,4H,ArH),5.42(dd,J=5.4 Hz,5.4 Hz,1H,2-H),3.48(dd,J=16.8 Hz,5.4 Hz,1H,3-H),3.36(dd,J=16.8 Hz,5.4 Hz,4H,3-H),2.26(s,3H,ArCH3),2.24(s,3H,ArCH3);13C NMR δ:192.48,167.77,164.85,162.77,136.38,135.78,134.77,134.50,133.47,133.31,130.95,129.72,129.08,129.01,128.86,126.59,43.10,38.24,20.71,19.88; HR-ESI-MS m/z:Calcd for C20H18N3O2S2{[M +H]+}396.083 5,found 396.083 9。

N-5-(6-氟-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-2-氯-乙酰胺(5g):收率85%,m.p.225℃~227℃;1H NMR δ:12.87(s,1H,NH),7.71(dd,J=9.4 Hz,2.8 Hz,1H,ArH),7.48~7.39(m,2H,ArH),5.43(t,J=4.7 Hz,1H,2-H),4.41(s,2H,CH2Cl),3.49(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.40(dd,J=17.4 Hz,4.8 Hz,1H,3-H);13C NMR δ:191.30,166.00,164.71,161.51,159.89,159.86,133.75,133.73,132.43,132.39,130.95,130.90,122.17,122.02,114.39, 114.24,42.83,42.71,38.82; HR-ESI-MS m/z:Calcd for C13H10N3O2S2FCl{[M + H]+} 357.988 2,found 357.988 1。

N-5-(6-氯-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-2-氯-乙酰胺(5h):收率85%,m.p.195℃~196℃;1H NMR δ:12.89(s,1H,NH),7.92(d,J=2.4 Hz,1H,ArH),7.56(dd,J=8.4 Hz,2.4 Hz,1H,ArH),7.44(d,J=8.4 Hz,1H,ArH),5.45(t,J=4.8 Hz,1H,2-H),4.41(s,2H,CH2Cl),3.48(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.41(dd,J=17.4 Hz,4.8 Hz,1H,3-H);13C NMR δ:191.10,166.01,164.59,159.90,137.06,133.99,132.05,131.13,130.62,127.63,42.71,41.93,38.72; HR-ESI-MS m/z:Calcd for C13H10N3O2S2FCl { M + H]+} 373.958 6,found 373.959 0。

N-5-(6,8-二甲基-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-2-氯-乙酰胺(5i):收率80%,m.p.190℃~192℃;1H NMR δ:12.88(s,1H,NH),7.69(s,1H,ArH),7.27(s,1H,ArH),5.40(t,J=4.8 Hz,1H,2-H),4.40(s,2H,CH2Cl),3.45(dd,J=17.1 Hz,4.8 Hz,1H,3-H),3.34(dd,J=17.0 Hz,4.8 Hz,1H,3-H),2.26(s,3H,ArCH3),2.23(s,3H,ArCH3);13C NMR δ:192.40,165.98,165.18,159.73,136.36,135.78,134.79,134.29,130.92,126.55,42.96,42.71,38.15,20.70,19.85; HR-ESI-MS m/z:Calcd for C15H15N3O2S2Cl{[M + H]+} 368.028 9,found 368.029 1。

N-5-(6-甲基-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-2-氯-乙酰胺(5j):收率80%,m.p.290℃~293℃;1H NMR δ:12.87(s,1H,NH),7.34~7.27(m,3H,ArH),5.37(t,J=4.8 Hz,1H,2-H),4.40(s,2H,CH2Cl),3.45(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.36(dd,J=16.8 Hz,4.8 Hz,1H,3-H),2.29(s,3H,ArCH3);13C NMR δ:192.12,169.89,162.25,159.56,135.93,135.34,134.69,130.56,128.70,128.46,43.33,42.71,38.89,21.15; HR-ESI-MS m/z:Calcd for C14H13N3O2S2Cl{[M + H]+} 354.013 2,found 354.013 4。

N-5-(6-氟-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-3-氯-丙酰胺(5k):收率85%,m.p.176℃~178℃;1H NMR δ:12.65(s,1H,NH),7.71(dd,J=9.4 Hz,2.8 Hz,1H,ArH),7.45~7.36(m,2H,ArH),5.41(t,J=4.8 Hz,1H,2-H),3.87(t,J=6.0 Hz,2H,CH2Cl),3.48(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.39(dd,J=17.4 Hz,4.8 Hz,1H,3-H),2.96(td,J=6.0 Hz,1.5 Hz,2H,NCOCH2);13C NMR δ:191.34,169.14,164.31,161.49,159.87,159.74,133.82,133.78,132.42,132.38,130.94,130.90,122.18,122.03,114.40,114.25,42.85,38.80,38.41,36.23; HR-ESI-MS m/z:Calcd for C14H12N3O2S2FCl{[M +H]+}372.003 8,found 372.004 5。

N-5-(6-氯-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-3-氯-丙酰胺(5l):收率80%,m.p.145℃~148℃;1H NMR δ:12.75(s,1H,NH),7.92(d,J=2.4 Hz,1H,ArH),7.56(dd,J=8.4 Hz,2.4 Hz,1H,ArH),7.44(d,J=8.4 Hz,1H,ArH),5.45(t,J=4.8 Hz,1H,2-H),3.77(t,J=6.0 Hz,2H,CH2Cl),3.48(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.41(dd,J=16.8 Hz,4.8 Hz,1H,3-H),2.90(td,J=6.0 Hz,1.5 Hz,2H,NCOCH2);13C NMR δ:191.13,164.42,163.52,160.13,133.99,132.06,131.09,130.62,129.34,127.64,42.78,42.03,38.70,36.92; HR-ESI-MS m/z:Calcd for C14H12N3O2S2Cl2{[M +H]+}387.977 1,found 387.977 1。

N-5-(6-氟-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-4-氯-丁酰胺(5m):收率80%,m.p.207℃~209℃;1H NMR δ:12.54(s,1H,NH),7.70(dd,J=9.4 Hz,2.9 Hz,1H,ArH),7.46~7.39(m,2H,ArH),5.40(t,J=4.8 Hz,1H,2-H),3.66(td,J=7.2 Hz,4.3 Hz,2H,NCOCH2),3.48(dd,J=17.4 Hz,4.8 Hz,1H,3-H),3.38(dd,J=17.4 Hz,4.8 Hz,1H,3-H),2.60(t,J=7.2 Hz,2H,CH2Cl),2.05~2.00(m,2H,NCOCCH2);13C NMR δ:191.35,174.10,171.21,164.04,161.48,159.89,133.83,133.81,132.42,132.38,130.94,130.89,122.17,122.01,114.39,114.24,45.08,42.87,38.80,32.52,27.74; HR-ESI-MS m/z:Calcd for C15H14N3O2S2FCl{[M +H]+}386.019 5,found 386.020 4。

N-5-(6-氯-硫色满-4-酮-2-基)-[1,3,4]噻二唑-2-基-4-氯-丁酰胺(5n):收率85%,m.p.218℃~220℃;1H NMR δ:12.55(s,1H,NH),7.92(d,J=2.5 Hz,1H,ArH),7.56(dd,J=8.5 Hz,2.5 Hz,1H,ArH),7.43(d,J=8.4 Hz,1H,ArH),5.42(t,J=4.8 Hz,1H,2-H),3.66(td,J=7.2 Hz,4.5 Hz,2H,3-H),3.47(dd,J=16.8 Hz,4.8 Hz,1H,3-H),3.40(dd,J=16.8 Hz,4.8 Hz,1H,3-H),2.61(t,J=7.2 Hz,2H,CH2Cl),2.05~2.00(m,2H,NCOCCH2);13C NMR δ:191.13,171.22,163.92,159.93,137.17,133.98,132.08,131.08,130.62,127.63,45.08,42.81,38.72,32.52,27.75; HRESI-MS m/z:Calcd for C15H14N3O2S2Cl2{[M + H]+} 401.989 9,found 401.989 0。

1.3体外抗真菌活性测试

采用微量稀释法测定了5a~5n对5种真菌的抗菌活性。将5用二甲基亚砜溶解,再用无菌蒸馏水稀释至(128,64,32,16,8,4,2)μg· mL-1。加入已灭菌的1%葡萄糖蛋白胨琼脂培养基中,接种供试菌(每种菌同时作一空白对照),置恒温烘箱中培养5 d~7 d测定化合物对真菌的抑制活性,计算最小抑菌浓度(MIC值)。以两性霉素B和氟康唑为阳性对照。

2 结果和讨论

2.1表征

以5b为例。1H NMR分析表明:δ 12.49处吸收峰归属酰胺(NH)质子,在δ 7.92~7.44的吸收峰为苯环质子,δ 5.42是硫色满酮母环上2-位质子吸收峰。在硫色满酮母环中,与羰基相连的亚甲基上的两个氢互相偶合,并受到邻碳上一个氢的偶合作用,裂分为dd峰,δ在3.47~3.40,乙酰胺甲基的δ出现在2.15。

13C NMR分析表明:两个羰基碳的δ分别为195.90和173.97,噻二唑中两个碳的δ分别为168.59和164.76,苯环碳的δ分别为141.94,138.78,136.83,135.82,135.40和132.38。硫色满酮3-位碳的δ为47.54,硫色满酮2-位碳的δ 为43.44,乙酰胺上甲基碳的δ为27.54。

2.2抗真菌活性

5的抗真菌活性见表1。由表1可见,5a~5n 对C.n,C.a和C.k均表现出较弱的抑制作用,

表1 5a~5n的抗真菌活性*Table 1 Antifungal activities of 5a~5n

图1 5a~5n的抗真菌活性Figure 1 Antifungal activities of 5a~5n

但是对E.f和M.r有良好的抑制作用。为此,对其进行进一步的研究,结果见图1。由图1可见,5a,5c,5d,5g和5m对E.f和M.r有较好的抗真菌活性,其中5c和5m对E.f和M.r的抑制活性优于阳性对照药物氟康唑(F,对E.f和M.r的MIC分别为32 μg·mL-1和64 μg·mL-1),5c 和5m对E.f和M.r的MIC均可达16 μg· mL-1; 5a对M.r的MIC达16 μg·mL-1; 5d和5g对E.f的MIC达16 μg·mL-1。

3 结论

以取代苯硫酚为原料,经3步反应,设计并合成了14个未见文献报道的含1,3,4-噻二唑的硫色满酮衍生物(5a~5n)。生物活性测定结果显示:5a~5n对C.n,C.a和C.k均表现出较弱的抑制作用,对E.f和M.r有良好的抑制作用。5a,5c,5d,5g和5m有较好的抗真菌活性,其中5a 对M.r的MIC为16 μg·mL-1; 5d和5g对E.f 的MIC为16 μg·mL-1; 5c和5m对E.f和M.r 的MIC均在16 μg·mL-1,优于阳性对照药物氟康唑,可作为先导结构进行优化研究。

参考文献

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·研究论文·

·研究论文·

Synthesis and Antifungal Activities of Novel Thiochromanone Derivatives Containing 1,3,4-Thiadiazole

LIANG Guo-chao1a,1b,ZHOU Guan1a,1b,
ZHONG Yi-fan1a,1b,HAN Xiao-yan1a,1b,SONG Ya-li1a,1b
(a.Key Laboratory for Pharmaceutical Quality Control of Hebei Province,College of Pharmaceutical; b.Key Laboratory of Medicinal Chemistry and Molecular Diagnosis,Ministry of Education,1.Hebei University,Baoding 071002,China)

Abstract:4-Thiochromane-2-carboxylic acid derivatives(2a~2d)were prepared by Michael addition reaction of substituted thiophenol with maleic anhydride.2-(5-amino-1,3,4-thiadiazol-2-yl)thiochroman-4-one derivatives(3a~3d)were prepared by acylation reaction of 2a~2d with thiosemicarbazide,respectively.Fourteen novel thiochromanone derivatives(5a~5n)containing 1,3,4-thiadiazole were synthesized by reaction of 3a~3d with acyl chloride.The structures were characterized by1H NMR,13C NMR and HR-ESI-MS.The antifungal activities of 5a~5n were investigated by micro dilution method.The results showed that some derivatives exhibited better antifungal activities on Epidermophyton floccosum and Mucor racemosus than Fluconazole.

Keywords:thiochromanone; 1,3,4-thiadazole; synthesis; antifungal activity

作者简介:梁国超(1989-),男,汉族,河北迁西县人,硕士研究生,主要从事药物化学的研究。E-mail:endyliang@126.com

基金项目:“重大新药创制”国家科技重大专项(2012ZX09103-101-057);河北省药物质量分析控制重点实验室开放基金资助

收稿日期:2015-09-15

DOI:10.15952/j.cnki.cjsc.1005-1511.2015.12.1100 *

文献标识码:A

中图分类号:O626; O621.3

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