Investigation of the electrophilic reactivity of the biologically active marine sesquiterpenoid onchidal and model compounds
作者:Melissa M Cadelis、Brent R Copp
DOI:10.3762/bjoc.14.197
日期:——
The structure of the sesquiterpene onchidal (6), a component of the defensive secretion of the shell-less mollusc Onchidella binneyi, contains a masked α,β-unsaturated 1,4-dialdehyde moiety, the presence of which has been proposed to be the cause of the feeding deterrent activity exhibited by the mollusc. We have found onchidal acts as an electrophile, reacting rapidly with the model nucleophile n-pentylamine
无壳软体动物Onchidella binneyi防御分泌成分的倍半萜烯ondaldal(6)的结构包含被掩盖的α,β-不饱和1,4-二醛部分,有人提出将其存在。软体动物表现出进食威慑作用的原因。我们已经发现杀螨剂可作为亲电子试剂,与模型亲核试剂n-戊胺快速反应,形成非对映体胺化的吡咯加合物。令人惊讶的是,未发现在杀昆虫剂和正戊硫醇之间发生反应。制备了结构简化的onchidal的正戊基11-13和环己基甲基15-17类似物,并证明了相似的胺选择性反应性。杀昆虫剂和类似物与模型蛋白溶菌酶反应,形成共价加合物,并导致蛋白交联。