Abstract:
A process for the synthesis of β-hydroxy 3-17-(1H-benzimidazol-1-yl)androsta-5,16-diene is described, a compound also known as Galeterone and used in the treatment of prostate cancer, having the formula (6).
Abstract:
A process is described wherein, by employing 17a-(3-hydroxypropyl) -63,7β3;15β,16β-dimethylene-5β-androstane-3β,5,17β-triol (II) as starting product, in a single stage reaction there is obtained drospirenone, (I), whereby the reaction is achieved using gaseous oxygen as the stoichiometric oxidant in the presence of a catalytic system containing (i) TEMPO or a derivative thereof, (ii) a ferric salt (Fe3+) and (iii) NaCI. The product drospirenone is a known synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic action, that is useful for preparing pharmaceutical compositions with contraceptive action.
Abstract:
A process for the synthesis of 3β-hydroxy-17-(1H-benzimidazol-1-yl)androsta-5,16-diene is described, a compound also known as Galeterone and used in the treatment of prostate cancer, having the formula (I) given below.
Abstract:
A process is described wherein, using 17α-(3-hydroxyprapyl)-6β,7β,15β,16β- dimethylene-5β-androstane-3β,5,17β-triol (III) as starting product, there is obtained 3β,5-dihydroxy-6β,7β,15β,16β-dimethylene-5β-17α-pregna-21, 17-carbolactone (I), a useful intermediate in the synthesis of the compound drospirenone, having contraceptive action: (Formula III & I) (III) (I)
Abstract:
A process is disclosed wherein, using either 17a-(3-hydroxypropyl)-6p,7p;15p,16p- dimethylene-5p-androstane-3p,5,17p-triol (II) or 3β,5^ΐΙ^κ^-6β,7β;15β,16β- dimethylene-5β,17α-pregnane-21,17-carbolactone (III) as starting material, through a single-step reaction it is obtained drospirenone (I), a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.