Process for R-epimer enrichment of 16,17-acetal derivatives of 21-acyloxy pregna,4-dien-11.beta., 16.alpha., 17.alpha.-triol-3,20-dione derivatives

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United States of America Patent

PATENT NO 6787533
SERIAL NO

09147675

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Abstract

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R-epimer enrichment of 16,17-acetal derivatives of 21-acyloxy pregna-1,4-dien-11beta,16alpha,17alpha-triol-3,20-dione derivatives is effected by fractional crystallization.

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  • ASTRAZENECA AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gutterer, Beate Allensbach, DE 13 255

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