A four step synthesis of the modified diterpene (±) nimbidiol (3) from (3,4-dimethoxyphenyl)acetonitrile is described which relies on a sulfenium ion promoted polyene cyclization. A key feature of this synthesis is the one flask reductive desulfurization-oxidative decyanation sequence used to convert the post cyclization intermediates 9a,b into prenimbidiol 10.
                                    描述了由(3,4-二
甲氧基苯基)
乙腈基于step离子促进的多烯环化的四步合成修饰的二萜(±)
二丙二醇(3)。该合成的关键特征是一个烧瓶的还原脱
硫-氧化脱
氰顺序,该顺序用于将环化后的中间体9a,b转化为
丙二醇10。