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Priority to ECSP972175priorityCriticalpatent/ECSP972175A/en
Publication of ECSP972175ApublicationCriticalpatent/ECSP972175A/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
La invención proporciona un compuesto de fórmula I:(gráfico), en donde A,B,X,Y y R son como se definen en la descripción, y un proceso para prepararlo. Los compuestos de fórmula I son útiles como sustancias farmacéuticas.The invention provides a compound of formula I: (graph), wherein A, B, X, Y and R are as defined in the description, and a process for preparing it. The compounds of formula I are useful as pharmaceutical substances.
ENRICHMENT PROCEDURE IN R OF EPIMEROS OF DERIVATIVES OF 16,17-ACETALS OF DERIVATIVES OF 21-ACILOXI-PREGNANO-1,4-DIENO-11-BETA, 16ALFA-TRIOL-3,20-DIONAS.