(15S,19S)-15-ethyl-17-methyl-1,11-diazapentacyclo[9.6.2.02,7.08,18.015,19]nonadeca-2,4,6,8(18),16-pentaene | 186887-58-1

• 分子结构分类: 有机化合物 - 生物碱及其衍生物 - Eburnan型生物碱
• 英文名称: (15S,19S)-15-ethyl-17-methyl-1,11-diazapentacyclo[9.6.2.02,7.08,18.015,19]nonadeca-2,4,6,8(18),16-pentaene
• CAS: 186887-58-1
• 化学式: C₂₀H₂₄N₂
• 分子量: 292.424
• InChiKey: XUBHGPKMHDLTDX-UXHICEINSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  22
• 可旋转键数：
  1
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  8.2
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  (15S,19S)-15-ethyl-17-methyl-1,11-diazapentacyclo[9.6.2.02,7.08,18.015,19]nonadeca-2,4,6,8(18),16-pentaene 在 sodium tetrahydroborate 、 silver tetrafluoroborate 、 三乙胺 、 N-溴代乙酰胺 作用下， 以 四氢呋喃 、 甲醇 、 二甲基亚砜 为溶剂， 反应 10.25h， 生成 eburnamenine-14-ylmethanol
  参考文献：
  名称：

  Asymmetric Total Synthesis of (+)-Apovincamine and a Formal Synthesis of (+)-Vincamine. Demonstration of a Practical “Asymmetric Linkage” between Aromatic Carboxylic Acids and Chiral Acyclic Substrates

  摘要：

  Asymmetric syntheses of (+)-apovincamine (1a) and (+)-vincamine (2) are described. Construction of the pentacyclic diene lactam 14, a pivotal intermediate for synthesis of the cis-fused vincane-type alkaloids, began by Birch reduction-alkylation of the chiral benzamide 3 to give the 6-ethyl-1-methoxy-4-methyl-1,4-cyclohexadiene 4. Conversion of 4 to 2,5-cyclohexadienone 5 (92% overall yield from 3) and HPLC analysis of 5 demonstrated the diastereomeric purity resulting from the Birch reduction-alkylation to be >100:1. Dienone 5 was converted to butyrolactone 9 (47% overall yield from 3), and 9 was coupled with tryptamine (10) to give the amide 11a. Amido keto aldehyde 13 was obtained from 11a, and acid-catalyzed tricyclization and subsequent base-induced elimination of MeOH provided the desired cis-fused pentacyclic diene lactam 14. Examination of the two-step process 13 --> 14 revealed a novel base-induced epimerization at C(21) which served to interconvert 14 and 17, possibly by the involvement of a homoenolate. Diene lactam 14 was converted to (+)-apovincaminal 20a, an intermediate in the synthesis of (+)-apovincamine (1a) reported by Winterfeldt and co-workers. A new procedure for conversion of 20a to 1a involves conversion of 20a to the acetal 20b and treatment of 20b with NBS/AIBN in CCl4. The conversion of 1a to vincamine (2) has been reported by Oppolzer and co-workers.

  DOI：

  10.1021/jo961603p
• 作为产物：
  描述：

  (14S,15S,19R)-15-ethyl-14-methoxy-17-methyl-1,11-diazapentacyclo[9.6.2.02,7.08,18.015,19]nonadeca-2,4,6,8(18),16-pentaen-12-one 在 lithium aluminium tetrahydride 、 potassium tert-butylate 作用下， 以 乙醚 、 叔丁醇 为溶剂， 反应 49.0h， 生成 (15S,19S)-15-ethyl-17-methyl-1,11-diazapentacyclo[9.6.2.02,7.08,18.015,19]nonadeca-2,4,6,8(18),16-pentaene
  参考文献：
  名称：

  Asymmetric Total Synthesis of (+)-Apovincamine and a Formal Synthesis of (+)-Vincamine. Demonstration of a Practical “Asymmetric Linkage” between Aromatic Carboxylic Acids and Chiral Acyclic Substrates

  摘要：

  Asymmetric syntheses of (+)-apovincamine (1a) and (+)-vincamine (2) are described. Construction of the pentacyclic diene lactam 14, a pivotal intermediate for synthesis of the cis-fused vincane-type alkaloids, began by Birch reduction-alkylation of the chiral benzamide 3 to give the 6-ethyl-1-methoxy-4-methyl-1,4-cyclohexadiene 4. Conversion of 4 to 2,5-cyclohexadienone 5 (92% overall yield from 3) and HPLC analysis of 5 demonstrated the diastereomeric purity resulting from the Birch reduction-alkylation to be >100:1. Dienone 5 was converted to butyrolactone 9 (47% overall yield from 3), and 9 was coupled with tryptamine (10) to give the amide 11a. Amido keto aldehyde 13 was obtained from 11a, and acid-catalyzed tricyclization and subsequent base-induced elimination of MeOH provided the desired cis-fused pentacyclic diene lactam 14. Examination of the two-step process 13 --> 14 revealed a novel base-induced epimerization at C(21) which served to interconvert 14 and 17, possibly by the involvement of a homoenolate. Diene lactam 14 was converted to (+)-apovincaminal 20a, an intermediate in the synthesis of (+)-apovincamine (1a) reported by Winterfeldt and co-workers. A new procedure for conversion of 20a to 1a involves conversion of 20a to the acetal 20b and treatment of 20b with NBS/AIBN in CCl4. The conversion of 1a to vincamine (2) has been reported by Oppolzer and co-workers.

  DOI：

  10.1021/jo961603p

文献信息

• DIAZA-BENZOFLUORANTHRENE COMPOUNDS
  申请人：HARBIN PHARMACEUTICAL GROUP CO., LTD. GENERAL PHARMACEUTICAL FACTORY

  公开号：US20180016270A1

  公开（公告）日：2018-01-18

  Disclosed are a series of diaza-benzofluoranthrene compounds. The present invention particularly relates to a compound represented by formula (I), pharmaceutically acceptable salts or tautomers thereof.

  揭示了一系列二氮杂苯并芴类化合物。本发明特别涉及一种由式(I)表示的化合物，其药学上可接受的盐或互变异构体。
• Diaza-benzofluoranthrene compounds
  申请人：HARBIN PHARMACEUTICAL GROUP CO., LTD. GENERAL PHARMACEUTICAL FACTORY

  公开号：US10017507B2

  公开（公告）日：2018-07-10

  Disclosed are a series of diaza-benzofluoranthrene compounds. The present invention particularly relates to a compound represented by formula (I), pharmaceutically acceptable salts or tautomers thereof.

  本发明公开了一系列重氮苯并菲化合物。本发明尤其涉及由式（I）代表的化合物、其药学上可接受的盐或同系物。