申请人:Jones, Jr. Gerald S.
公开号:US09090925B2
公开(公告)日:2015-07-28
A process for the large-scale chemoenzymatic production of (6S)-5-methyl-5,6,7,8-tetrahydrofolic acid, also known as (6S)-5-methylTHFA, the process comprising the steps of: (1) reducing folic acid (FA) so as to yield dihydrofolic acid (DHFA); (2) stereoselectively reducing DHFA with dihydrofolate reductase (DHFR) in the presence of NADP/NADPH, glucose and GluDH so as to yield (6S)-THFA; (3) converting (6S)-THFA to (6S)-5-methlTHFA; and (4) isolating (6S)-5-methylTHFA.
一种用于大规模化学酶法生产(6S)-5-甲基-5,6,7,8-四氢叶酸,也称为(6S)-5-甲基THFA的方法,包括以下步骤:(1)还原叶酸(FA)以产生二氢叶酸(DHFA);(2)在NADP/NADPH、葡萄糖和GluDH的存在下,用二氢叶酸还原酶(DHFR)立体选择性地还原DHFA,以产生(6S)-THFA;(3)将(6S)-THFA转化为(6S)-5-甲基THFA;(4)分离(6S)-5-甲基THFA。