作者:Kristopher N. Hahn、Olugbeminiyi O. Fadeyi、Hyekyung P. Cho、Craig W. Lindsley
DOI:10.1016/j.tetlet.2012.05.009
日期:2012.7
we describe the first total synthesis of cremastrine, a pyrrolizidine alkaloid from Cremastra appendiculata, with anticholinergic activity as well as an unnatural analogue. The streamlined synthesis proceeds in nine steps, seven steps longest linear sequence, in 25.2% overall yield, and features novel methodology to construct the pyrrolizidine core. Biological evaluation of cremastrine and the unnatural
在这封信中,我们描述了第一次全合成 cremastrine,一种来自Cremastra appendiculata的吡咯里西啶生物碱,具有抗胆碱能活性以及非天然类似物。简化的合成分九步进行,最长的线性序列为七步,总产率为 25.2%,并具有构建吡咯里西啶核心的新方法。cremastrine 和非天然类似物的生物学评价表明两者都是泛-mAChR 功能性拮抗剂。