Title:
DIOXOLANE DERIVATIVE
Document Type and Number:
Japanese Patent JPH03215482
Kind Code:
A
Abstract:
NEW MATERIAL: A compound of formula I (R1, R2 are each methyl, ethyl or together signify pentamethylene).
EXAMPLE: {(S)-2methyl-1,4dioxaspiro[4,5]dec2-yl}methanol.
USE: An intermediates for the preparation of vitamin E, especially d-α-tocopherol.
PROCESS: A racemic body of alkanoic acid ester of formula II (R3' is 2-9C alkanoyl) is hydrolyzed with an enzyme such as subclass of carboxyesterase (EC 3.1.1.1), triacylglycerol lipase (EC 3.1.1.3), cholesterolesterase (EC 3.1.1.13) or diacylglycerol lipase (EC 3.1.1.34).
Inventors:
RIHIYARUTO BARUNAA
YOZEFU HIYUPUSHIYAA
BEATO BIRUTSU
YOZEFU HIYUPUSHIYAA
BEATO BIRUTSU
Application Number:
JP6738690A
Publication Date:
September 20, 1991
Filing Date:
March 19, 1990
Export Citation:
Assignee:
HOFFMANN LA ROCHE
International Classes:
C07D311/72; C07D317/18; C07D317/20; C07D317/24; C07D317/72; C12P17/04; C12P41/00; (IPC1-7): C07D311/72; C07D317/18; C07D317/72; C12P41/00
Attorney, Agent or Firm:
Heiyoshi Odashima
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