作者:Nico Moons、Daan Goyens、Jeroen Jacobs、Luc Van Meervelt、Wim M. De Borggraeve、Wim Dehaen
DOI:10.1016/j.tetlet.2012.10.006
日期:2012.12
diterpenoids steviol and isosteviol, respectively the aglycone and its rearrangement product of the steviol glycosides, have gained a growing interest. Their biological properties have encouraged many scientists to synthesize a considerable amount of analogues. In this Letter, we present three novel (iso)steviol derivatives in which the complex ring structures of the ent-kaurene steviol and ent-beyerane
最近,二萜类甜菊醇和异osteviol,分别是甜菊糖苷的糖苷配基及其重排产物,引起了越来越多的兴趣。它们的生物学特性促使许多科学家合成了大量的类似物。在这种信,我们提出三种新型(异)甜菊醇衍生物,其中的复合环结构的ent-贝壳杉烯和甜菊醇ent- beyerane异甜菊醇经由两个高度立体选择性的反应途径被扩展。对于甜菊醇,我们通过羰基烯反应扩展结构,然后以高收率形成内酯或a-3(2 H)-一。异osteviol转化为二烯,随后发生Diels-Alder反应。