Facile chemoenzymic preparation of enantiomerically pure 2-methylglycerol derivatives as versatile trifunctional C4-synthons
摘要:
Both enantiomers of a series of synthetically valuable 2-methylglycerol derivatives have been prepared with >99% ee using a chemoenzymatic reaction sequence. The introduction of chirality was achieved by enantioselective esterification of 1,2-O-protected 2-methylglycerol 3 or enantioselective hydrolysis of its butyryl ester 4. The enzymatic reaction proceeded with unusually high selectivity and velocity for a primary alcohol (ester) substrate.
Facile chemoenzymic preparation of enantiomerically pure 2-methylglycerol derivatives as versatile trifunctional C4-synthons
摘要:
Both enantiomers of a series of synthetically valuable 2-methylglycerol derivatives have been prepared with >99% ee using a chemoenzymatic reaction sequence. The introduction of chirality was achieved by enantioselective esterification of 1,2-O-protected 2-methylglycerol 3 or enantioselective hydrolysis of its butyryl ester 4. The enzymatic reaction proceeded with unusually high selectivity and velocity for a primary alcohol (ester) substrate.
Alcohols of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each independently methyl or ethyl or together signify pentamethylene, formed by the enzymatic hydrolysis of a corresponding (RS) alkanoic acid ester are intermediates for Vitamin E.