Regioselective enzymatic aminoacylation of lobucavir to give an intermediate for lobucavir prodrug
作者:Ronald L Hanson、Zhongping Shi、David B Brzozowski、Amit Banerjee、Thomas P Kissick、Janak Singh、Annie J Pullockaran、Jeffrey T North、Junying Fan、Jeffrey Howell
DOI:10.1016/s0968-0896(00)00209-1
日期:2000.12
yield), was obtained by selective hydrolysis of N,N'-bis[(phenylmethoxy)carbonyl]bis[L-valine], O,O'-[(1S,2R,3R)-3-(2-amino-6-oxo-1H-purin-9-yl)cyclobuta-1,2-diyl]methyl ester (1) with lipase M, and L-valine, [(1R,2R,4S)-2-(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)-4-(hydroxymethyl)cyclobutyl]methyl ester monohydrochloride (4, 87% yield) was obtained by hydrolysis of bis[L-valine], O,O'-[(1S,2R,3R)-3-
lobucavir前药,L-缬氨酸,[(1S,2R,3R)-3-(2-氨基-1,6-二氢-6-氧代9H-嘌呤-9-基)-2-(羟甲基)环丁基的合成一甲基酯一盐酸盐(BMS 233866)需要将洛可韦(BMS 180194)的两个羟基之一与缬氨酸进行区域选择性偶联。通过酶促反应,洛巴韦的两个羟基均可被缬氨酸选择性氨酰化。N-[(苯基甲氧基)羰基] -L-缬氨酸,[(1R,2R,4S)-2-(2-氨基-6-氧代-1H-嘌呤-9-基)-4-(羟甲基)环丁基]甲基通过选择性水解N,N'-双[(苯基甲氧基)羰基]双[L-缬氨酸],O,O'-[(1S,2R,3R)-3- (2-氨基-6-氧代-1H-嘌呤-9-基)环丁-1,1,2-二基]甲酯(1)与脂肪酶M和L-缬氨酸,[(1R,2R,4S)-2- (2-氨基-1,6-二氢-6-氧代-9H-嘌呤-9-基)-4-(羟甲基)环丁基]甲酯单盐酸盐(4,双[L