PROCESS FOR PRODUCING DROSPIRENONE (6BETA,7BETA;15BETA,16BETA- -DIMETHYLENE-3-OXO-17'ALPHA'-PREGN-4-EN-21,17-CARBOLACTONE), AS WELL AS 7'ALPHA'-(3-HYDROXY-1-PROPYL)-6BETA,7BETA;15BETA,16BETA- -DIMETHYLENE-5BETA-ANDROSTANE-3BETA,5,17BETA-TRIOL AND 6BETA,7BETA;15BETA,16BETA-DIMETHYLENE-5BETA-HYDROXY-5-OXO- -17'ALPHA'-ANDROSTANE-21,17-CARBOLACTONE
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PROCESS FOR PREPARING DROSPORENONE (6BETA, 7BETA, 15 BETA, 16BETA-DIMETHYLENE-3-OXO-17ALPHA-PREGN-4-ENE-21,17-CARBOLACTONE, DRSP), AS WELL AS 7ALPHA-(3-HYDROXY-1-PROPYL)-6BETA,7BETA,15BETA,16BETA-DIMETHYLENE-5BETA- -ANDROSTAN-3BETA,5,17BETA-TRIOLE(ZK 92836) AND 6BETA,7BETA,15BETA,16BETA- -DIMETHYLENE-5BETA-HYDROXY-3-OXO-17ALPHA-ANDROSTAN-21,17-CARBOLACTONE (90965) AS INTERMEDIATES OF THIS PROCESS
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