FIELD: chemistry.
SUBSTANCE: 6α-methylhydrocortisone and its 11β-alkanoyloxy-derivatives are obtained by method that includes preliminary protection of 11β,- 17α- and 21-hydroxy groups of hydrocortisone or its 21-acyloxy-derivative in step-by-step way with formation of 17α,20;20,21-bismethylenedioxy-derivative (BMDO-protection of dioxyacetone side chain) and further sterification of 11β-hydroxy group, methylenisation of C6 position, reduction of 6-methylene group into 6α-methyl one. 6α-methylprednisolone or its 11β-alkanoyloxy-derivatives are obtained by reaction of 1,2-dehydrogenation of 6α-methylhydrocortisone and its 11β-alkanoyloxy-derivatives by microbiological transformation by means of microbial cells. EFFECT: obtaining of the above listed derivatives.
17 cl, 23 ex.
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Authors
Dates
2008-11-10—Published
2006-06-14—Filed