Process for the enzymatic preparation of enantiopure 1,...

Chemistry: molecular biology and microbiology – Process of utilizing an enzyme or micro-organism to destroy... – Resolution of optical isomers or purification of organic...

Reexamination Certificate

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C549S453000, C549S341000, C549S354000, C435S118000

Reexamination Certificate

active

06887700

ABSTRACT:
A process is provided for preparing an enantiopure 1,3-dioxolan-4-one or 1,3-oxathiolan-5-one derivative, which includes bringing a mixture containing enantiomeric 1,3-dioxolan-4-one or 1,3-oxathiolan-5-one derivatives and an enzyme with hydrolytic activity into contact in the presence of a nucleophile. Cleaving a dioxolanone/oxathiolanone ring of one enantiomer occurs by the enzyme with hydrolytic activity and, after the cleavage of one enantiomer has taken place, the uncleaved enantiomer of the 1,3-dioxolan-4-one or 1,3-oxathiolan-5-one derivative is isolated.

REFERENCES:
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Bull. Chem. Soc. Jpn. 69, pp. 2977-2987 (1996).
Hof R. P. et al., (May 7, 1996) Journal of Organic Chemistry, American Chemical Society, Easton, US, vol. 61, No. 10, pp. 3423-3427.

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