2-mercaptocyclopentano<1,2-f>benzimidazole | 81864-39-3

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并咪唑类
• 英文名称: 2-mercaptocyclopentano<1,2-f>benzimidazole
• 英文别名: 1,5,6,7-tetrahydroindeno(5,6-d)imidazole-2-thiol；Indeno[5,6-d]imidazole-2(1H)-thione, 3,5,6,7-tetrahydro-；3,5,6,7-tetrahydro-1H-cyclopenta[f]benzimidazole-2-thione
• CAS: 81864-39-3
• 化学式: C₁₀H₁₀N₂S
• 分子量: 190.269
• InChiKey: HWAHWVSUJANCAS-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2
• 重原子数：
  13
• 可旋转键数：
  0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  56.2
• 氢给体数：
  2
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2-mercaptocyclopentano<1,2-f>benzimidazole 在 sodium hydroxide 、 碳酸氢钠 、 间氯过氧苯甲酸 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 0.17h， 生成 2-[(4-Methoxy-3-methylpyridin-2-yl)methylsulfinyl]-3,5,6,7-tetrahydrocyclopenta[f]benzimidazole
  参考文献：
  名称：

  Structure-Activity Relationship of Omeprazole and Analogs as Helicobacter pylori Urease Inhibitors

  摘要：

  Helicobacter pylori urease belongs to a family of highly conserved urea-hydrolyzing enzymes. A common feature of these enzymes is the presence of two Lewis acid nickel ions and a reactive cysteine residue in the active site. The H+/K(+)-ATPase inhibitor omeprazole is a prodrug of a sulfenamide which covalently modifies cysteine residues on the luminal side of the H+/K(+)-ATPase of gastric parietal cells. Omeprazole and eight analogues were selected based on their chemical, electronic, and kinetic properties, and each was incubated with viable H. pylori in phosphate-buffered saline at pH 7.4 for 30 min, after which 100 mM urea was added and the amount of ammonia formed analyzed after a further 10 min. Inhibition between 0% and 100% at a 0.1 mM concentration was observed for the different analogues and could be expressed as a function of the pKa-value of the pyridine, the pKa-value of the benzimidazole, the overall lipophilicity, and, most importantly, the rate of sulfenamide formation, in a quantitative structure-activity relationship. The inhibition was potentiated by a lower pH (favoring the formation of the sulfenamide) but abolished in the presence of beta-mercaptoethanol (a scavenger of the sulfenamide). Structural analogues incapable of yielding the sulfenamide did not inhibit ammonia production. Treatment of Helicobacter felis-infected mice with 230 mumol/kg flurofamide b.i.d. for 4 weeks, known to potently inhibit urease activity in vivo, as a means of eradicating the infection, was tested and compared with the effect of 125 mumol/kg omeprazole b.i.d. for 4 weeks. Neither treatment proved efficacious.

  DOI：

  10.1021/jm00025a008
• 作为产物：
  描述：

  6-硝基-2,3-二氢-1H-茚-5-胺 在 palladium on activated charcoal 氢气 作用下， 以 乙醇 、 水 为溶剂， 反应 12.0h， 生成 2-mercaptocyclopentano<1,2-f>benzimidazole
  参考文献：
  名称：

  Structure-Activity Relationship of Omeprazole and Analogs as Helicobacter pylori Urease Inhibitors

  摘要：

  Helicobacter pylori urease belongs to a family of highly conserved urea-hydrolyzing enzymes. A common feature of these enzymes is the presence of two Lewis acid nickel ions and a reactive cysteine residue in the active site. The H+/K(+)-ATPase inhibitor omeprazole is a prodrug of a sulfenamide which covalently modifies cysteine residues on the luminal side of the H+/K(+)-ATPase of gastric parietal cells. Omeprazole and eight analogues were selected based on their chemical, electronic, and kinetic properties, and each was incubated with viable H. pylori in phosphate-buffered saline at pH 7.4 for 30 min, after which 100 mM urea was added and the amount of ammonia formed analyzed after a further 10 min. Inhibition between 0% and 100% at a 0.1 mM concentration was observed for the different analogues and could be expressed as a function of the pKa-value of the pyridine, the pKa-value of the benzimidazole, the overall lipophilicity, and, most importantly, the rate of sulfenamide formation, in a quantitative structure-activity relationship. The inhibition was potentiated by a lower pH (favoring the formation of the sulfenamide) but abolished in the presence of beta-mercaptoethanol (a scavenger of the sulfenamide). Structural analogues incapable of yielding the sulfenamide did not inhibit ammonia production. Treatment of Helicobacter felis-infected mice with 230 mumol/kg flurofamide b.i.d. for 4 weeks, known to potently inhibit urease activity in vivo, as a means of eradicating the infection, was tested and compared with the effect of 125 mumol/kg omeprazole b.i.d. for 4 weeks. Neither treatment proved efficacious.

  DOI：

  10.1021/jm00025a008

文献信息

• Imidazole derivatives
  申请人：Hoffmann-La Roche Inc.

  公开号：US04435406A1

  公开（公告）日：1984-03-06

  Tricyclic imidazole derivatives of the formula ##STR1## wherein R.sup.1 is 2-pyridyl optionally substituted by lower alkyl or lower alkoxy, n is the integer 0 or 1, R.sup.2 is hydrogen or lower alkyl, R.sup.3 and R.sup.4, independently, are hydrogen or lower alkyl, A is a group of the formula ##STR2## m is the integer 2 or 3, R.sup.5, R.sup.6, R.sup.7 and R.sup.8, independently, are hydrogen or lower alkyl, and R.sup.9 is hydrogen and R.sup.10 is hydrogen or lower alkyl or R.sup.9 and R.sup.10 taken together are oxo, provided that at least one of R.sup.3 and R.sup.4 is lower alkyl when A is a group of the formula --CH.dbd.CH--CH.dbd.CH-- or --(CH.sub.2).sub.4 --, and their pharmaceutically acceptable acid addition salts. The compounds of formula I inhibit gastric acid secretion and prevent the formation of gastric ulcers.

  Tricyclic imidazole derivatives of the formula ##STR1## wherein R.sup.1 is 2-pyridyl optionally substituted by lower alkyl or lower alkoxy, n is the integer 0 or 1, R.sup.2 is hydrogen or lower alkyl, R.sup.3 and R.sup.4, independently, are hydrogen or lower alkyl, A is a group of the formula ##STR2## m is the integer 2 or 3, R.sup.5, R.sup.6, R.sup.7 and R.sup.8, independently, are hydrogen or lower alkyl, and R.sup.9 is hydrogen and R.sup.10 is hydrogen or lower alkyl or R.sup.9 and R.sup.10 taken together are oxo, provided that at least one of R.sup.3 and R.sup.4 is lower alkyl when A is a group of the formula --CH.dbd.CH--CH.dbd.CH-- or --(CH.sub.2).sub.4 --, and their pharmaceutically acceptable acid addition salts. The compounds of formula I inhibit gastric acid secretion and prevent the formation of gastric ulcers.
• Pyridyl methyl thio or sulfinyl indeno(5,6-d)imidazoles
  申请人：Hoffmann-La Roche Inc.

  公开号：US04554280A1

  公开（公告）日：1985-11-19

  Tricyclic imidazole derivatives of the formula ##STR1## wherein R.sup.1 is 2-pyridyl optionally substituted by lower alkyl or lower alkoxy, n is the integer 0 or 1, R.sup.2 is hydrogen or lower alkyl, R.sup.3 and R.sup.4, independently, are hydrogen or lower alkyl, A is a group of the formula ##STR2## m is the integer 2 or 3, R.sup.5, R.sup.6, R.sup.7 and R.sup.8, independently, are hydrogen or lower alkyl, and R.sup.9 is hydrogen and R.sup.10 is hydrogen or lower alkyl or R.sup.9 and R.sup.10 taken together are oxo, provided that at least one of R.sup.3 and R.sup.4 is lower alkyl when A is a group of the formula --CH.dbd.CH--CH.dbd.CH-- or --(CH.sub.2).sub.4 --, and their pharmaceutically acceptable acid addition salts. The compounds of formula I inhibit gastric acid secretion and prevent the formation of gastric ulcers.

  公式为 ##STR1## 的三环咪唑衍生物，其中R.sup.1是2-吡啶基，可选择地被低烷基或低烷氧基取代，n是整数0或1，R.sup.2是氢或低烷基，R.sup.3和R.sup.4独立地是氢或低烷基，A是公式 ##STR2## 的基团，m是整数2或3，R.sup.5，R.sup.6，R.sup.7和R.sup.8独立地是氢或低烷基，R.sup.9是氢，R.sup.10是氢或低烷基或R.sup.9和R.sup.10一起是氧代，但当A是公式--CH.dbd.CH--CH.dbd.CH--或--（CH.sub.2）.sub.4--的基团时，至少R.sup.3和R.sup.4中的一个是低烷基，它们的药学上可接受的酸盐。公式I的化合物抑制胃酸分泌并预防胃溃疡的形成。
• US4435406A
  申请人：——

  公开号：US4435406A

  公开（公告）日：1984-03-06
• US4554280A
  申请人：——

  公开号：US4554280A

  公开（公告）日：1985-11-19
• US4599347A
  申请人：——

  公开号：US4599347A

  公开（公告）日：1986-07-08