Structures and conformations of (–)-isobicyclogermacrenal and (–)-lepidozenal, two key sesquiterpenoids of the cis- and trans-10,3-bicyclic ring systems, from the liverwort Lepidozia vitrea : X-ray crystal structure analysis of the hydroxy derivative of (–)-isobicyclogermacrenal
作者:Akihiko Matsuo、Hirōshi Nozaki、Naoji Kubota、Seiryo Uto、Mitsuru Nakayama
DOI:10.1039/p19840000203
日期:——
The structures and absolute configurations of the two sesquiterpene aldehydes, (–)-isobicyclogermacrenal (1) and (–)-lepidozenal (2), which were isolated from the liverwort Lepidozia vitrea, have been determined on the basis of chemical and spectroscopic evidence to be (6R,7S)-6,11-cyclogermacra-1(10)-E,4E-dien-14-al and (6R,7S)-lepidoza-1 (10)E,4E-dien-14-al, consisting of the cis- and trans-10,3-bicyclic
根据化学和光谱学证据确定了两种从倍叶草Lepidozia vitrea分离得到的倍半萜烯醛(–)-异双环germacrenal(1)和(–)-lepidozenal(2)的结构和绝对构型。是(6 - [R,7小号)-6,11- cyclogermacra-1(10) - ë,4 ë -二烯-14-人,(6 - [R,7小号)-lepidoza-1(10)ê,4 ë - dien-14-al,由顺式和反式-10,3-双环系统组成。前者(1)的结构已由单晶X确证羟基衍生物(7)的X射线分析。还描述了分子构象,生物遗传学特征和生物活性。