Enzymatic resolution of methyl (2E, 4R*,5S*)-4-(N-benzyl-N-methyl)amino-5-hydroxyhex-2-enoate
作者:Mikio Fujii、Machiko Ono、Miyuki Sato、Hiroyuki Akita
DOI:10.1016/j.molcatb.2010.12.005
日期:2011.4
For the purpose of preparation of optically active aminoalcohol congeners possessing both hydroxyl- and dialkylamino-substituted vicinal chiral carbons, lipase-assisted acylation of methyl (2E,4R*,5S*)-4-(N-benzyl-N-methyl)amino-5-hydroxyhex-2-enoate (4) using CAL-B with vinyl hexanoate as an acyl donor was carried out to give (4S,5R)-hexenoate (7) (44%, 99.2% ee) as the reaction product and (4R,5S)-alcohol
为了制备光学活性氨基醇的同源物的同时具有羟基和二烷基氨基取代的邻位手性碳,脂肪酶辅助甲基(2-酰化目的ë,4 - [R *,5小号*) - 4-(Ñ苄基ñ -使用CAL-B和己酸乙烯酯作为酰基供体进行甲基)氨基-5-羟基己-2-烯酸酯(4)生成(4 S,5 R)-己酸酯(7)(44%,99.2%ee)作为反应产物,(4 R,5 S)-醇(4)(46%,98.2%ee)作为未反应的起始原料。该Ë目前脂肪酶辅助分辨率的α-值估计大于1000。由此获得的酰化产物成功地转化为甲基β-d-伪乙酰胺(12)。