Synthesis of CD-ring structure of cortistatin A, an anti-angiogenic steroidal alkaloid from marine sponge
作者:Naoyuki Kotoku、Yuji Sumii、Takeshi Hayashi、Motomasa Kobayashi
DOI:10.1016/j.tetlet.2008.09.157
日期:2008.12
Stereoselective synthesis of the CD-ring structure of cortistatin A (1), a novel anti-angiogenic steroidal alkaloid from Indonesian marine sponge, was achieved. The stereogenic tertiary carbon center bearing the isoquinoline moiety was constructed by 1,3-chiral transfer method using Johnson–Claisen rearrangement of the chiral allylic alcohol 5. Subsequent intramolecular Michael-aldol reaction afforded
立体选择性合成皮质抑素A(1)的CD环结构,一种来自印度尼西亚海洋海绵的新型抗血管生成甾体生物碱。立体异构的叔碳中心带有异喹啉部分是通过1,3-手性转移方法使用手性烯丙醇5的Johnson-Claisen重排法构建的。随后的分子内迈克尔-醛醇缩合反应提供了具有中等立体选择性的目标反式-氢化茚骨架。