A Hypervalent Iodine-Induced Double Annulation Enables a Concise Synthesis of the Pentacyclic Core Structure of the Cortistatins
作者:Jessica L. Frie、Christopher S. Jeffrey、Erik J. Sorensen
DOI:10.1021/ol902168g
日期:2009.12.3
A stereocontrolled synthesis of a complex pentacycle embodying the molecular architecture of the cortistatin class of natural products was achieved from the (+)-Hajos−Parrish ketone. The cornerstone of our approach is a hypervalent iodine induced tandem intramolecular oxidative dearomatization and nitrile oxide cycloaddition. The manner in which these ring formations were orchestrated has yielded a
The cortistatins are a recently identified class of marine naturalproducts characterized by an unusual steroidal skeleton, which have been found to inhibit differentially the proliferation of various mammalian cells in culture by an unknown mechanism. We describe a comprehensive route for the synthesis of cortistatins from a common precursor, which in turn is assembled from two fragments of similar
皮质抑素是最近发现的一类海洋天然产物,其特征是具有不寻常的甾体骨架,已发现其通过未知机制不同程度地抑制培养中各种哺乳动物细胞的增殖。我们描述了从一个共同的前体合成皮质抑素的综合路线,而后者又由两个结构复杂性相似的片段组装而成。皮质抑素 A 和 J,以及 K 和 L 首次在平行过程中从由单一化合物制备的类似中间体合成。通过鉴定将皮质抑素 L 合成系列中的中间体与皮质抑素 A 和 J 的相应中间体联系起来的简便实验室转化,我们推测自然界中可能会发生一些相关的路径,
Total Synthesis of (+)-Cortistatin A
作者:K. C. Nicolaou、Ya-Ping Sun、Xiao-Shui Peng、Damien Polet、David Y.-K. Chen
DOI:10.1002/anie.200803550
日期:2008.9.8
Construction of key building blocks towards the synthesis of cortistatins
作者:Satrajit Indu、Rahul D. Telore、Krishna P. Kaliappan
DOI:10.1039/d0ob00170h
日期:——
the construction of key building blocks towards the synthesis of cortistatins; a family of steroidal alkaloids. Cortistatin A, being a primary target due to its superior biological properties over other congeners, has been prepared by two different synthetic routes. Synthesis of the precursor to the heavily substituted A-ring starting fromD-glucose and construction of the DE-ring junction employing