Acetylcyclosporin 7-thioamide | 159391-83-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 肽模拟物
• 英文名称: Acetylcyclosporin 7-thioamide
• 英文别名: [(E,1R,2R)-1-[(2S,5S,11S,14S,17S,20S,23R,26S,29S,32S)-5-ethyl-1,7,10,16,20,23,25,28,31-nonamethyl-11,17,26,29-tetrakis(2-methylpropyl)-3,6,9,12,15,18,24,27,30,33-decaoxo-14,32-di(propan-2-yl)-21-sulfanylidene-1,4,7,10,13,16,19,22,25,28,31-undecazacyclotritriacont-2-yl]-2-methylhex-4-enyl] acetate
• CAS: 159391-83-0
• 化学式: C₆₄H₁₁₃N₁₁O₁₂S
• 分子量: 1260.73
• InChiKey: WCOQSXLXCVFJOX-ZSINMPTNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.2
• 重原子数：
  88
• 可旋转键数：
  17
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.78
• 拓扑面积：
  300
• 氢给体数：
  4
• 氢受体数：
  13

反应信息

• 作为反应物：
  描述：

  Acetylcyclosporin 7-thioamide 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 2.5h， 以80%的产率得到Cyclosporin 7-thioamide
  参考文献：
  名称：

  Cyclosporin A: Regioselective Ring Opening and Fragmentation Reactions via Thioamides. A Route to Semisynthetic Cyclosporins

  摘要：

  Cyclosporin A (1a) served as the starting material for the semisynthetic preparation of a variety of novel cyclosporins. Acetylcyclosporin A (2) was treated with Lawesson's reagent. From the reaction mixture, three novel acetylated thioamides were isolated: the 4,7-bis(thioamide) 3a, the 7-thioamide 3b, and the 4-thioamide 3c. The acetylated products 3a-c were hydrolyzed to the known thioamides 4a-c, respectively. The 7-thioamide 3b was alkylated to give the S-benzyl thioamidate 5b. A regioselective ring opening reaction at the activated site was induced by treating 5b under acidic conditions giving the 7,8-seco-cyclosporin 7a. The (R)-alanine moiety was replaced by (R)-phenylalanine via the Edman degradation product 7e giving 7f. Removal of the protecting groups led to 7h. This was cyclized to [(R)-phenylalanine](8)-cyclosporin (1b). The N-protected 7,8-seco-cyclosporin 7i was reduced to the aldehyde 7j, homologated (7k), and deprotected to give 7m. This was cyclized to the vinylogous cyclosporin 8a. Similarly,:the 4,5-seco-cyclosporin 9c was prepared and converted via several steps (9d-h) to the vinylogous cyclosporin 8b. Finally, under acidic conditions, the dibenzyl bis(thioamidate) 5a underwent a fragmentation reaction to give the octapeptide 10a and the tripeptide 11a. The octapeptide 10a was coupled with a different tripeptide (11d) to 9i and cyclized via 9j-k to the [(S)-phenylalanine](7)-cyclosporin (1c).

  DOI：

  10.1021/jo00103a015
• 作为产物：
  描述：

  O-acetyl-cyclosporin A 在 劳森试剂 作用下， 以 xylene 为溶剂， 反应 0.5h， 以34%的产率得到Acetylcyclosporin 4,7-bis(thioamide)
  参考文献：
  名称：

  Cyclosporin A: Regioselective Ring Opening and Fragmentation Reactions via Thioamides. A Route to Semisynthetic Cyclosporins

  摘要：

  Cyclosporin A (1a) served as the starting material for the semisynthetic preparation of a variety of novel cyclosporins. Acetylcyclosporin A (2) was treated with Lawesson's reagent. From the reaction mixture, three novel acetylated thioamides were isolated: the 4,7-bis(thioamide) 3a, the 7-thioamide 3b, and the 4-thioamide 3c. The acetylated products 3a-c were hydrolyzed to the known thioamides 4a-c, respectively. The 7-thioamide 3b was alkylated to give the S-benzyl thioamidate 5b. A regioselective ring opening reaction at the activated site was induced by treating 5b under acidic conditions giving the 7,8-seco-cyclosporin 7a. The (R)-alanine moiety was replaced by (R)-phenylalanine via the Edman degradation product 7e giving 7f. Removal of the protecting groups led to 7h. This was cyclized to [(R)-phenylalanine](8)-cyclosporin (1b). The N-protected 7,8-seco-cyclosporin 7i was reduced to the aldehyde 7j, homologated (7k), and deprotected to give 7m. This was cyclized to the vinylogous cyclosporin 8a. Similarly,:the 4,5-seco-cyclosporin 9c was prepared and converted via several steps (9d-h) to the vinylogous cyclosporin 8b. Finally, under acidic conditions, the dibenzyl bis(thioamidate) 5a underwent a fragmentation reaction to give the octapeptide 10a and the tripeptide 11a. The octapeptide 10a was coupled with a different tripeptide (11d) to 9i and cyclized via 9j-k to the [(S)-phenylalanine](7)-cyclosporin (1c).

  DOI：

  10.1021/jo00103a015

文献信息

• Synthesis and biological evaluation of [d-lysine]8cyclosporin A analogs as potential anti-HCV agents
  作者：Andrew Scribner、David Houck、Zhuhui Huang、Sarah Mosier、Michael Peel、Bernard Scorneaux

  DOI：10.1016/j.bmcl.2010.09.036

  日期：2010.11

  An efficient synthesis of [D-lysine](8)cyclosporin A has been developed. Several analogs of [ D- lysine] 8cyclosporin A have been synthesized and show promising anti-HCV activity, particularly compounds 39 and 43, which each exhibit an anti-HCV EC50 < 200 nM, and are each >= 50-fold less immunosuppressive than cyclosporin A. (C) 2010 Elsevier Ltd. All rights reserved.