Patent ID: 6787659
Filing Date: 2004-09-07
Classification: C07D,C07J

Abstract:
A process for the production of oxandrolone comprising the steps of:(a) oxidizing mestanolone using IBX to form 17&bgr;-hydroxy-17&agr;-methyl-5&agr;-androst-1-en-3-one; (b) hydroxylating the 17&bgr;-hydroxy-17&agr;-methyl-5&agr;-androst-1-en-3-one using osmium tetroxide to form 1&agr;, 2&agr;, 17&bgr;-trihydroxy-17&agr;-methylandrostan-3-one; (c) cleaving the 1&agr;, 2&agr;, 17&bgr;-trihydroxy-17&agr;-methylandrostan-3-one using sodium metaperiodate to form 17&bgr;-hydroxy-17&agr;-methyl-1-oxo-1,2,-seco-A-nor-5&agr;-androstan-2-oic acid; and (d) reducing the 17&bgr;-hydroxy-17&agr;-methyl-1-oxo-1,2,-seco-A-nor-5&agr;-androstan-2-oic acid using sodium borohydride followed by an acid treatment to form oxandrolone.