(+)-(2S,3aR)-1-acetyl-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a-tetrahydropyrrolo[2,3-b]indole | 377725-65-0

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: (+)-(2S,3aR)-1-acetyl-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a-tetrahydropyrrolo[2,3-b]indole
• 英文别名: methyl (2S,8bR)-3-acetyl-8b-(3-methylbut-2-enyl)-1,2-dihydropyrrolo[2,3-b]indole-2-carboxylate
• CAS: 377725-65-0
• 化学式: C₁₉H₂₂N₂O₃
• 分子量: 326.395
• InChiKey: YIAZUWOEHSNQEV-QFBILLFUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.7
• 重原子数：
  24
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.42
• 拓扑面积：
  59
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (+)-(2S,3aR)-1-acetyl-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a-tetrahydropyrrolo[2,3-b]indole 在 sodium methylate 作用下， 以 甲醇 为溶剂， 反应 1.0h， 生成 (+)-(2S,3aR)-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a,-tetrahydropyrrolo[2,3-b]indole 、 (+)-(2S,3aR)-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a,-tetrahydropyrrolo[2,3-b]indole
  参考文献：
  名称：

  A synthetic strategy using Witkop's pyrroloindole for (−)-debromoflustramine B, (+)-ent-debromoflustramine B and (+)-ent-debromoflustramide B

  摘要：

  While prenylation of (-)-Witkop's pyrroloindole (2), secured from L-tryptophan under standard N-alkylation conditions, led to a ca. 1: 1 diastereoisomeric mixture of two C-3a-alkylated indolenines 3 and 4, use of phase-transfer conditions altered this to ca. 1: 2. Reduction followed by N-prenylation of the resulting secondary amines gave C, N-dialkylated products. The derived separable diastereoisomeric (-)-and (+)-Barton esters 19a and 19b were then converted into (-)-debromoflustramine B and (+)-ent-debromoflustramine B, respectively. A novel reaction involving oxygen and the carbanion derived from Barton ester 19b led to (+)-ent-debromoflustramide B. Treatment of N-8-prenylated Witkop's pyrroloindole 5 with Lewis acid (BF3 center dot Et2O) uncovered a new clean intramolecular cyclisation involving the prenyl unit. (C) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2007.07.091
• 作为产物：
  描述：

  N-乙酰-L-色氨酸甲酯 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 2.0h， 生成 (+)-(2S,3aR)-1-acetyl-3a-(3'-methyl-2'-butenyl)-2-methoxycarbonyl-1,2,3,3a-tetrahydropyrrolo[2,3-b]indole
  参考文献：
  名称：

  A synthetic strategy using Witkop's pyrroloindole for (−)-debromoflustramine B, (+)-ent-debromoflustramine B and (+)-ent-debromoflustramide B

  摘要：

  While prenylation of (-)-Witkop's pyrroloindole (2), secured from L-tryptophan under standard N-alkylation conditions, led to a ca. 1: 1 diastereoisomeric mixture of two C-3a-alkylated indolenines 3 and 4, use of phase-transfer conditions altered this to ca. 1: 2. Reduction followed by N-prenylation of the resulting secondary amines gave C, N-dialkylated products. The derived separable diastereoisomeric (-)-and (+)-Barton esters 19a and 19b were then converted into (-)-debromoflustramine B and (+)-ent-debromoflustramine B, respectively. A novel reaction involving oxygen and the carbanion derived from Barton ester 19b led to (+)-ent-debromoflustramide B. Treatment of N-8-prenylated Witkop's pyrroloindole 5 with Lewis acid (BF3 center dot Et2O) uncovered a new clean intramolecular cyclisation involving the prenyl unit. (C) 2007 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2007.07.091

文献信息

• A new synthesis of (−)-debromoflustramine B, (+)-ent-debromoflustramine B and (+)-debromoflustramide B
  作者：A.Sofia Cardoso、Natarajan Srinivasan、Ana M Lobo、Sundaresan Prabhakar

  DOI：10.1016/s0040-4039(01)01359-4

  日期：2001.9

  The first synthesis of (-)-debromoflustramine B is reported. Appropriate structural modifications of an optically pure Barton ester, obtained in five steps from N-acetyl-L-tryptophan methyl ester, lead to the alkaloid. (C) 2001 Elsevier Science Ltd. All rights reserved.
• A synthetic strategy using Witkop's pyrroloindole for (−)-debromoflustramine B, (+)-ent-debromoflustramine B and (+)-ent-debromoflustramide B
  作者：A. Sofia P. Cardoso、M. Manuel B. Marques、Natarajan Srinivasan、Sundaresan Prabhakar、Ana M. Lobo

  DOI：10.1016/j.tet.2007.07.091

  日期：2007.10

  While prenylation of (-)-Witkop's pyrroloindole (2), secured from L-tryptophan under standard N-alkylation conditions, led to a ca. 1: 1 diastereoisomeric mixture of two C-3a-alkylated indolenines 3 and 4, use of phase-transfer conditions altered this to ca. 1: 2. Reduction followed by N-prenylation of the resulting secondary amines gave C, N-dialkylated products. The derived separable diastereoisomeric (-)-and (+)-Barton esters 19a and 19b were then converted into (-)-debromoflustramine B and (+)-ent-debromoflustramine B, respectively. A novel reaction involving oxygen and the carbanion derived from Barton ester 19b led to (+)-ent-debromoflustramide B. Treatment of N-8-prenylated Witkop's pyrroloindole 5 with Lewis acid (BF3 center dot Et2O) uncovered a new clean intramolecular cyclisation involving the prenyl unit. (C) 2007 Elsevier Ltd. All rights reserved.