PROCESSING FOR PRODUCING OF DROSPIRENONE (6β,...

Details PROCESSING FOR PRODUCING OF DROSPIRENONE (6β,... PROCESSING FOR PRODUCING OF DROSPIRENONE (6β,...

2005-08-23

2005-08-23

Trinh, Ba K. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C549S297000

Reexamination Certificate

active

06933395

ABSTRACT:
Process for the production of drospirenone (6β,7β; 15β,16β-dimethylene-3-oxo-17α-pregn-4-ene-21,17-carbolactone, DRSP) (1) and 7α-(3-hydroxy-1-propyl)-6β,7β; 15β,16β-dimethylene-5β-androstane-3β,5,17β-triol (ZK 92836) and 6β,7β; 15β,16β-dimethylene-5β-hydroxy-3-oxo-17α-androstane-21,17-carbolactone (ZK 90965) as intermediate products of the process.

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