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Priority to ECSP961809priorityCriticalpatent/ECSP961809A/en
Publication of ECSP961809ApublicationCriticalpatent/ECSP961809A/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
La invención proporciona compuestos de la fórmula I (gráfico), en donde X,Y,R1,R2,R3 y R4 son como se definen en la descrpción, y un proceso para preparar los mismos. Los compuestos de la fórmula I son útiles como productos farmacéuticos.The invention provides compounds of formula I (graph), wherein X, Y, R1, R2, R3 and R4 are as defined in the description, and a process for preparing the same. The compounds of formula I are useful as pharmaceuticals.
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.