A unified synthetic approach to trachylobane-, beyerane-, atisane- and kaurane-type diterpenes
作者:Antonio Abad、Consuelo Agulló、Ana C. Cuñat、Ignacio de Alfonso Marzal、Ismael Navarro、Antonio Gris
DOI:10.1016/j.tet.2006.01.062
日期:2006.4
A general synthetic approach to the polycyclic carbon skeleton of biogenetically related trachylobane, beyerane, atisane, and kaurane diterpenes from carvone is described. The skeleton of these diterpenes is prepared from a common intermediate, that is, 25, readily prepared from carvone using an IMDA reaction and an intramolecular diazo ketone cyclopropanation of an unsaturated ketone as key steps
描述了一种从香芹酮中生物遗传相关的环戊烷,拜亚烷,阿替沙烷和月桂烷二萜的多环碳骨架的通用合成方法。这些二萜的骨架是使用IMDA反应和不饱和酮的分子内重氮酮环丙烷化作为关键步骤,由香芹酮容易地由通常的中间体25制得的。在适当修饰三环[3.2.1.0 2,7 ]辛烷部分周围的官能团后,可通过该环丙烷环的区域选择性还原性裂解,从该关键的trachylobane型中间体获得四环二萜环系统。