Diversity Oriented Synthesis of Hispanane-like Terpene Derivatives from (R)-(+)-Sclareolide
作者:María C. de la Torre、Isabel García、Miguel A. Sierra
DOI:10.1002/chem.200401220
日期:2005.6.6
(R)-(+)-Sclareolide 1 has been used as a starting material to develop a diversity oriented methodology to access hispanane 28 a, and hispanane-like derivatives 27 b-27 e. This methodology is based on the intramolecular Friedel-Crafts acylation of the corresponding 12-desoxylabdanoic-like acids 27, for the construction of the cycloheptane ring which is characteristic of the hispananes. Acids 27 are
(R)-(+)-Sclareolide 1已被用作起始材料,以开发面向多样性的方法,以接近组胺28a和组胺样衍生物27b-27e。该方法是基于相应的12-脱氧labdanoic样酸27的分子内Friedel-Crafts酰化作用,用于构建具有庚烷特征的环庚烷环。酸27是从醇20中获得的,可以通过将锂或镁试剂加至酰胺12(随后进行卢氏还原)或醛21中来获得。该顺序导致制备了正庚烷骨架27a。因此,该方法的多功能性使得结构多样性导向的合成成为可能,因为它允许访问各种各样的类似组胺的衍生物。