(19S)-10-[[2-[[(5S,5aS,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl]amino]phenyl]iminomethyl]-19-ethyl-19-hydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione | 197647-00-0

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - 喜树碱
• 英文名称: (19S)-10-[[2-[[(5S,5aS,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl]amino]phenyl]iminomethyl]-19-ethyl-19-hydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione
• CAS: 197647-00-0
• 化学式: C₄₈H₄₀N₄O₁₁
• 分子量: 848.866
• InChiKey: MUPKVSTUEPDRJK-UINMZKSFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.6
• 重原子数：
  63
• 可旋转键数：
  8
• 环数：
  11.0
• sp3杂化的碳原子比例：
  0.27
• 拓扑面积：
  188
• 氢给体数：
  3
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  (19S)-10-[[2-[[(5S,5aS,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl]amino]phenyl]iminomethyl]-19-ethyl-19-hydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4,6,8,10,15(20)-heptaene-14,18-dione 、 异丙胺 以 氯仿 为溶剂， 反应 22.0h， 生成 (2S)-2-[12-[[2-[[(5S,5aS,8aR,9R)-9-(4-hydroxy-3,5-dimethoxyphenyl)-8-oxo-5a,6,8a,9-tetrahydro-5H-[2]benzofuro[5,6-f][1,3]benzodioxol-5-yl]amino]phenyl]iminomethyl]-8-(hydroxymethyl)-9-oxo-11H-indolizino[1,2-b]quinolin-7-yl]-2-hydroxy-N-propan-2-ylbutanamide
  参考文献：
  名称：

  Antitumor agents 294. Novel E-ring-modified camptothecin–4β-anilino-4′-O-demethyl-epipodophyllotoxin conjugates as DNA topoisomerase I inhibitors and cytotoxic agents

  摘要：

  Two conjugates (1 and 2) of camptothecin (CPT) and 4 beta-anilino-4'-O-demethylepipodophyllotoxin were previously shown to exert antitumor activity through inhibition of topoisomerase I (topo I). In this current study, two novel conjugates (1E and 2E) with an open E-ring in the CPT moiety were first synthesized and evaluated for biological activity in comparison with their intact E-ring congeners. This novel class of CPT-derivatives exhibits its antitumor effect against CPT-sensitive and -resistant cells, in part, by inhibiting topo I-linked DNA (TLD) religation. An intact E-ring was not essential for the inhibition of TLD religation, although conjugates with an open E-ring were less potent than the closed ring analogs. This lower religation potency resulted in decreased formation of protein-linked DNA breaks (PLDBs), and hence, less cell growth inhibition. In addition to their impact on topo I, conjugates 1E, 2, and 2E exhibited a minor inhibitory effect on topo II-induced DNA cleavage. The novel structures of 1E and 2E may present scaffolds for further development of dual function topo I and II inhibitors with improved pharmacological profiles and physicochemical properties. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2012.05.030

文献信息

• Antitumor agents 294. Novel E-ring-modified camptothecin–4β-anilino-4′-O-demethyl-epipodophyllotoxin conjugates as DNA topoisomerase I inhibitors and cytotoxic agents
  作者：Deyong Ye、Qian Shi、Chung-Hang Leung、Seung-Whan Kim、Shin-Young Park、Elizabeth A. Gullen、Zao Li Jiang、Hao Zhu、Susan L. Morris-Natschke、Yung-Chi Cheng、Kuo-Hsiung Lee

  DOI：10.1016/j.bmc.2012.05.030

  日期：2012.7

  Two conjugates (1 and 2) of camptothecin (CPT) and 4 beta-anilino-4'-O-demethylepipodophyllotoxin were previously shown to exert antitumor activity through inhibition of topoisomerase I (topo I). In this current study, two novel conjugates (1E and 2E) with an open E-ring in the CPT moiety were first synthesized and evaluated for biological activity in comparison with their intact E-ring congeners. This novel class of CPT-derivatives exhibits its antitumor effect against CPT-sensitive and -resistant cells, in part, by inhibiting topo I-linked DNA (TLD) religation. An intact E-ring was not essential for the inhibition of TLD religation, although conjugates with an open E-ring were less potent than the closed ring analogs. This lower religation potency resulted in decreased formation of protein-linked DNA breaks (PLDBs), and hence, less cell growth inhibition. In addition to their impact on topo I, conjugates 1E, 2, and 2E exhibited a minor inhibitory effect on topo II-induced DNA cleavage. The novel structures of 1E and 2E may present scaffolds for further development of dual function topo I and II inhibitors with improved pharmacological profiles and physicochemical properties. (C) 2012 Elsevier Ltd. All rights reserved.