3β-bromo-(18α)-19β,28-epoxyoleanan-2-one | 1561173-21-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: 3β-bromo-(18α)-19β,28-epoxyoleanan-2-one
• 英文别名: 3β-bromo-2-oxoallobetulin
• CAS: 1561173-21-4
• 化学式: C₃₀H₄₇BrO₂
• 分子量: 519.606
• InChiKey: VGXGMSGXRCNDJP-RAVXDNHOSA-N

反应信息

• 作为产物：
  描述：

  19β,28-epoxy-18α-oleanan-2-one 在 溴 、 potassium acetate 、 溶剂黄146 作用下， 以 氯仿 为溶剂， 以25%的产率得到3α-bromo-(18α)-19β,28-epoxyoleanan-2-one
  参考文献：
  名称：

  Selective functionalization of 2-oxoallobetulin derivatives

  摘要：

  A new series of 2-oxoallobetulin derivatives has been synthesized by using various unique reactions. Site-specific or regio-selective functionalization of those compounds has been investigated. In all cases, the reactions only happened at C-3 position except the synthesis of lactam happened at C-1 position. The intermediates leading to the novel allobetulin derivatives have also been described. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tet.2013.12.075