Lipase-catalyzed Resolution of Acetates of Racemic Phenolic Aporphines and Homoaporphines in Organic Solvent
作者:Osamu Hoshino、Hiroyuki Fuchino、Masafumi Kikuchi
DOI:10.3987/com-94-s(b)40
日期:——
Enzymatic resolution of (+/-)-1-acetoxy-2,9,10-trimethoxyaporphine (O-acetylthaliporphine)(3), (+/-)-2-acetoxy-1,9,10-trimethoxyaporphine (O-acetylpredicentrine)(4), and (+/-)-3-acetoxy-2,9,10-trimethoxyaporphines (5) by use of immobilized lipase in organic solvent gave resolved 3-5 and the corresponding hydroxyaporphines (9-11) in fair to good chemical and optical yields. Analogous reaction of (+/-)-1-acetoxy-2,10,11-trimethoxyhomoaporphine (6) did not take place, whereas that of (+/-)-2-acetoxy-1,10,11-trimethoxy- and (+/-)-3-acetoxy-2,10,11-trimethoxyhomoaporphines (7 and 8) produced optical active 7, 8 and hydroxyhomoaporphines (13, 14).