作者:Antonio Abad、Consuelo Agulló、Ana C Cuñat、Ismael Navarro
DOI:10.1016/s0040-4039(01)01953-0
日期:2001.12
stereoselective approach to polyoxygenated atisane-type diterpenes starting from (S)-(+)-carvone is described. The key steps involve an intramolecular Diels–Alder reaction, an unusual intramolecular diazo ketone cyclopropanation of an unsaturated ketone, and a regioselective endocyclic cleavage of a cyclopropyl carbinyl radical as key synthetic steps. The synthesis of the bioactive polyoxygenated atisanes atis-16(17)-en-3
从(S)-(+)-香芹酮开始,介绍了一种新的立体选择方法,用于多氧合的atisane型二萜。关键步骤涉及分子内Diels-Alder反应,不饱和酮的异常分子内重氮酮环丙烷化以及环丙基羰基自由基的区域选择性内环裂解等关键合成步骤。按照这种方法合成具有生物活性的多氧化atisanes atis-16(17)-en-3,14-dione(2)和3 R-羟基-atis-16(17)-en-2,14-dione(3)被表达。