| 1100715-26-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• CAS: 1100715-26-1
• 化学式: C₂₁H₁₇N₇O₇S₂
• 分子量: 543.541
• InChiKey: VMTHHLFONZVWCC-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  在 sodiumsulfide nonahydrate 、 sulfur 、 盐酸 、 氨 作用下， 以 甲醇 、 水 为溶剂， 反应 1.0h， 以71%的产率得到ethyl 1-(4-aminophenyl)-5-phenyl-3-(5-sulfamoyl-1,3,4-thiadiazole-2-ylcarbamoyl)-1H-pyrazole-4-carboxylate
  参考文献：
  名称：

  Effects of new 5-amino-1,3,4-thiadiazole-2-sulfonamide derivatives on human carbonic anhydrase isozymes

  摘要：

  Pyrazole carboxylic acid amides of 5-amino-1,3,4-thiadiazole-2-sulfonamide 1 (inhibitor 1) were synthesized from 4-benzoyl-1-(4-nitrophenyl)-5-phenyl-1H-pyrazole-3-carbonyl chloride and 4-benzoyl-1-(3-nitrophenyl)-5-phenyl-1H-pyrazole-3-carbonyl chloride compounds. Human carbonic anhydrase isoenzymes (hCA-I and hCA-II) were purified from erythrocyte cells by the affinity chromatography. The inhibitory effects of inhibitor 1, acetazolamide (AAZ), and of 16 newly synthesized amides (8-11, 12a-f, 13a-c, 14a-b, and 15) on hydratase and esterase activities of these isoenzymes have been studied in vitro. The average IC50 values of the new compounds (8-11,12a-f, 13a-c, 14a-b, and 15) for hydratase activity ranged from 3.25 to 4.75 mu M for hCA-I and from 0.055 to 2.6 mu M for hCA-II. The mean IC50 values of the same inhibitors for esterase activity were in the range of 2.7-6.6 mu M for hCA-I ( with the exception of inhibitor 10, which did not inhibit the esterase activity of hCA-I) and of 0.013-4.2 mu M for hCA-II. The K-i values for new compounds (8-11, 12a-f, 13a-c, 14a-b, and 15) were observed well below that of the parent compound inhibitor 1 and were also comparable to that of AAZ under the same experimental conditions. The comparison of newly synthesized amides to inhibitor 1 and to AAZ indicated that the new derivatives preferentially inhibit hCA-II and are more potent inhibitors of hCA-II than the parent inhibitor 1 and AAZ. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2009.03.048