-
OISI, TAKEHSI;UMEHDZAVA, BUNSUKEH;XOSINO, OSAMU;AKITA, XIROYUKI;MATIDA, X+
作者:OISI, TAKEHSI、UMEHDZAVA, BUNSUKEH、XOSINO, OSAMU、AKITA, XIROYUKI、MATIDA, X+
DOI:——
日期:——
-
HOSHINO, OSAMU;ITOH, KATSUHIKO;UMEZAWA, BUNSUKE;AKITA, HIROYUKI;OISHI, TA+, CHEM. AND PHARM. BULL., 38,(1990) N2, C. 3273-3276
作者:HOSHINO, OSAMU、ITOH, KATSUHIKO、UMEZAWA, BUNSUKE、AKITA, HIROYUKI、OISHI, TA+
DOI:——
日期:——
-
HOSHINO, OSAMU;ITOH, KATSUHIKO;UMEZAWA, BUNSUKE;AKITA, HIROYUKI;OISHI, TA+, TETRAHEDRON LETT., 29,(1988) N 5, 567-568
作者:HOSHINO, OSAMU、ITOH, KATSUHIKO、UMEZAWA, BUNSUKE、AKITA, HIROYUKI、OISHI, TA+
DOI:——
日期:——
-
Immobilized lipase catalyzed hydrolysis of labile acetate:enantioselective hydrolysis of (±)-4-acetoxy-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methylisoquinoline
作者:Osamu Hoshino、Katsuhiko Itoh、Bunsuke Umezawa、Hiroyuki Akita、Takeshi Oishi
DOI:10.1016/s0040-4039(00)80151-3
日期:——
-
Kinetic resolution of (.+-.)-4-acyloxy-1,2,3,4-tetrahydro-6,7-dimethoxy-2-methylisoquinolines by use of immobilized lipases in organic solvents.
作者:Osamu HOSHINO、Katsuhiko ITOH、Bunsuke UMEZAWA、Hiroyuki AKITA、Takeshi OISHI
DOI:10.1248/cpb.38.3273
日期:——
Kinetic resolution of (±)-4-acyloxytetrahydroisoquinolines (5-7) by use of lipases immobilized on Celite in isooctane or cyclohexane saturated with water was carried out to give 4S-(+)-tetrahydroisoquinolin-4-ol (8) in a high optical purity. The absolute configuration of (+)-8 was determined by comparison of the spectral data and specific rotation with those of authentic 4R-(-)-tetrahydroisoquinolin-4-ol (8) derived from R-(-)-epinephrine (9).
通过使用固定在硅藻土上的脂肪酶在含水的异辛烷或环己烷中对(±)-4-酰氧基四氢异喹啉(5-7)进行动力学拆分,得到高光学纯度的4S-(+)-四氢异喹啉-4-醇(8)。通过与从R-(-)-肾上腺素(9)衍生的标准4R-(-)-四氢异喹啉-4-醇(8)的谱数据和比旋光度的比较,确定了(+)-8的绝对构型。