FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing a novel compound, a derivative of diacetonide 20-hydroxyecdysone with a novel regrouped 18-methyl group. Described is a method of producing a C27-steroid with a regrouped methyl group via hydrogenation over a palladium catalyst (10% Pd/C) in a solution of an alcohol (preferably methanol) in the presence of an alcoholate of an alkali metal (preferably sodium methylate), diacetonide 9α, 14α-epoxy-14-desoxy-20-hydroxyecdysone or diacetonide 14α-hydroperoxy-20-hydroxyecdysone, or Δ8(14) - 14-desoxy-20-hydroxyecdysone, followed by treatment of the reaction mixture with ammonium chloride solution and extraction of the desired 2,3:20,22-diacetonide 9α, 13α-epoxy-14β-methyl-13-demethyl-14-desoxy-7,8-dihydro-20-hydroxyecdysone using known techniques with output of 60-65%.
EFFECT: obtaining a novel useful compound.
1 cl, 3 ex
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Authors
Dates
2012-02-27—Published
2010-07-06—Filed