A versatile chiral synthon, (1R, 6S)-6-methoxycarbonyl-3-cyclohexene-1-carboxylic acid, was obtained by an enantioselective ydrolysis of the corresponding meso diester with pig liver esterase. This enzymatic hydrolysis can easily be carried out on a multi-hundred gram scale. The chiral monoester thus obtained can be further converted into all stereoisomers of 1-amino-2-alkoxycarbonyl-4-cyclohexene derivatives in an enantio- and stereocontrolled manner. These derivatives are considered as potential key intermediates for synthesizing a variety of biologically interesting compounds such as aminocyclitol and carbapenem antibiotics.
利用猪肝
酯酶对相应的中二
酯类进行对映选择性
水解,获得了一种多功能手性合成物--(1R, 6S)-6-甲氧基羰基-3-
环己烯-1-
羧酸。这种酶
水解可以在数
百克的规模上轻松进行。由此获得的手性单酯可以对映和立体可控的方式进一步转化为 1-
氨基-2-烷氧羰基-4-
环己烯衍
生物的所有立体异构体。这些衍
生物被认为是潜在的关键中间体,可用于合成多种具有
生物学意义的化合物,如
氨基环糖醇和碳青霉烯类抗生素。