abstract |
Disclosed are 15alpha, 16alpha-methylene-17-hydroxy-19-nor -17-pregna-4-en-3-one-21-carboxylic acid gamma-lactone derivatives of general formula 1 namely, 17-beta-Hydroxy-15alpha, 16alpha-methylene-19-nor-17 alpha-pregna-4-en-3-one-21-carboxylic acid gamma-Iactone, 17beta-Hydroxy-7 alpha-methyl-15alpha, 16alpha-methylene-19-nor-17 alpha-pregna-4-en-3-one-21-carboxylic acid gamma-Iactone, 17beta-Hydroxy-7beta-methyl-15alpha, 16alpha-methylene-19-nor-17 alpha-pregna-4-en-3-one-21-carboxylic acid gamma-Iactone for menopausal complaints and contraception. |