Oxidation of lynestrenol by the fungusCunninghamella elegans
摘要:
Transformation of lynestrenol (19-nor-17 alpha-pregn-4-en-20-yn-17 beta-ol) (1) was carried out by incubation with Cunninghamella elegans to obtain 19-nor-17 alpha-pregn-4-en-20-yn-3-one-10 beta,17 beta-diol (2), 19-nor-17 alpha-pregn-4-en-20-yn-3-one-6 beta,17 beta-diol (3), and 19-nor-17 alpha-pregn-4-en-20-yn-3 beta,6 beta,17 beta-triol (4). Metabolite 4 was identified as a new compound. These metabolites were structurally characterised on the basis of spectroscopic techniques.
Oxidation of lynestrenol by the fungusCunninghamella elegans
摘要:
Transformation of lynestrenol (19-nor-17 alpha-pregn-4-en-20-yn-17 beta-ol) (1) was carried out by incubation with Cunninghamella elegans to obtain 19-nor-17 alpha-pregn-4-en-20-yn-3-one-10 beta,17 beta-diol (2), 19-nor-17 alpha-pregn-4-en-20-yn-3-one-6 beta,17 beta-diol (3), and 19-nor-17 alpha-pregn-4-en-20-yn-3 beta,6 beta,17 beta-triol (4). Metabolite 4 was identified as a new compound. These metabolites were structurally characterised on the basis of spectroscopic techniques.
The present invention relates to semisolid transcutaneous medicaments based on at least one oxidation-sensitive progestin or a pharmaceutically acceptable derivative thereof. The medicaments comprise ascorbic acid, an ascorbic acid derivative or a salt thereof and have excellent stability. Corresponding gels which comprise a combination of norethisterone acetate and estradiol are described in particular.