Stereo- and Regiocontrolled Syntheses of Exomethylenic Cyclohexane β-Amino Acid Derivatives
作者:Loránd Kiss、Enikő Forró、György Orsy、Renáta Ábrahámi、Ferenc Fülöp
DOI:10.3390/molecules201219749
日期:——
Cyclohexane analogues of the antifungal icofungipen [(1R,2S)-2-amino-4-methylenecyclopentanecarboxylic acid] were selectively synthesized from unsaturated bicyclic β-lactams by transformation of the ring olefinic bond through three different regio- and stereocontrolled hydroxylation techniques, followed by hydroxy group oxidation and oxo-methylene interconversion with a phosphorane. Starting from an
通过三种不同的区域和立体控制羟基化技术,通过环烯烃键的转化,从不饱和双环β-内酰胺选择性地合成了抗真菌剂icofungipen [(1R,2S)-2-氨基-4-亚甲基环戊烷羧酸]的环己烷类似物羟基氧化和氧代亚甲基与磷烷的相互转化。从通过消旋外消旋化合物的酶促拆分获得的对映体纯的双环β-内酰胺开始,对映发散的方法导致制备了艾可芬净的右旋和左旋环己烷类似物。