作者:Masatake Niwa、Masanobu Iguchi、Shosuke Yamamura
DOI:10.1246/bcsj.49.3148
日期:1976.11
From a biogenetic point of view, the acid-catalyzed cyclizations of germacrones (1, 2, and 3) were carried out, using several kinds of reagents and solvents (80% aq AcOH, 80% aq HCOOH, AlCl3 in absolute ether, AcOH in PhSH, 100% HCOOH in PhSH, and concd H2SO4 in PhSH). In all cases, the stereospecific cyclizations of these germacrones took place to give cadinane-type, selinane-type or guaiane-type
从生物遗传学的角度来看,使用多种试剂和溶剂(80% aq AcOH、80% aq HCOOH、AlCl3 的无水醚、AcOH)进行了germacrones(1、2和3)的酸催化环化PhSH 中,PhSH 中的 100% HCOOH,PhSH 中的浓 H2SO4)。在所有情况下,根据试剂和溶剂的种类,这些germacrones 发生立体有择环化以产生cadinane 型、selinane 型或guaiane 型化合物。将详细介绍每种化合物的形成过程。