Medrogestone production

Details Medrogestone production Medrogestone production

1995-03-14

1996-06-04

Prior, Kimberly J.

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

Organic compounds

Cyclopentanohydrophenanthrene ring system containing

C07J 7500, C07J 500

Patent

active

055234275

ABSTRACT:
The solvate 3.beta.,5.alpha.,6.beta.-trihydroxy-6.alpha.,17.alpha.-dimethylpregnan-20- one monomethanolate, a crystalline intermediate in the manufacture of medrogestone, and a method for its production by displacing the solvent in a solution of 3.beta.,5.alpha.,6.beta.-trihydroxy-6.alpha.,17.alpha.-dimethylpregnan-20- one with methanol are disclosed.

REFERENCES:
patent: 3170936 (1965-02-01), Morand et al.
patent: 5428151 (1995-06-01), Winkley et al.
Deghenghi et al., J. Med. Chem., 6, 301 (1963).
Yadav et al., Syn. Commun., 19 (5&6), 1057 (1989).
Carruthers et al., J. Org. Chem., 57, 961 (1992).
Posner et al., Tet. Letts., 32 (45), 6489 (1991).
Graber et al., J. Org. Chem., 27, 2534 (1962).
Bernstein et al., J. Org. Chem., 26, 269 (1961).

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