PROCESS FOR SELECTIVELY PRODUCING 1-PHOSPHORYLATED SUGAR DERIVATIVE ANOMER AND PROCESS FOR PRODUCING NUCLEOSIDE
申请人:Mitsui Chemicals, Inc.
公开号:EP1178051A2
公开(公告)日:2002-02-06
A desired isomer is selectively prepared by phosphorolyzing and isomerizing an anomer mixture of a 1-phosphorylated saccharide derivative while crystallizing one of the isomers to displace the equilibrium. Furthermore, using the action of a nucleoside phosphorylase, a nucleoside is prepared from the 1-phosphorylated saccharide derivative obtained and a base with improved stereoselectivity and a higher yield. This process is an anomer-selective process for preparing a 1-phosphorylated saccharide derivative and a nucleoside.
通过对 1-磷酸化糖衍生物的异构体混合物进行磷酸化和异构化,选择性地制备所需的异构体,同时使其中一种异构体结晶以取代平衡。此外,在核苷磷酸化酶的作用下,还可以用获得的 1-磷酸化糖衍生物和碱制备核苷,立体选择性更高,产率也更高。该工艺是制备 1-磷酸化糖衍生物和核苷的同分异构体选择性工艺。