Total Synthesis of Bengamide E and Analogues by Modification at C-2 and at Terminal Olefinic Positions
作者:Francisco Sarabia、Antonio Sánchez-Ruiz
DOI:10.1021/jo0516032
日期:2005.11.1
The total synthesis of the natural product Bengamide E, one of the members of a new class of antitumor natural products of marine origin, is reported based on a convergent and flexible synthetic route featuring an oxirane ring-opening reaction and an olefin cross metathesis. In a similar way, analogues structurally modified at C-2 and at the terminal vinyl positions were prepared by introduction of
据报道,天然产物Bengamide E是海洋来源的一类新型抗肿瘤天然产物的成员之一,它的合成基于一种具有环氧乙烷开环反应和烯烃交叉复分解作用的趋同和灵活的合成途径。以类似的方式,通过分别在环氧化物开环和烯烃交叉复分解步骤中引入各种亲核试剂和烷基取代基来制备在C-2和在乙烯基末端的结构上被修饰的类似物。这些研究证明了我们合成策略的有效性,尽管它们揭示了与烯烃交叉复分解有关的一些问题,烯烃复分解的效率取决于C-2位置的取代基以及烯烃的空间环境。