Method of preparing steroid compounds of controlled particle siz

Details Method of preparing steroid compounds of controlled particle siz Method of preparing steroid compounds of controlled particle siz

1984-10-11

1986-08-12

Roberts, Elbert L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540 57, 540 79, C07J 4300

Patent

active

046055177

ABSTRACT:
The method of preparing a 2.alpha.-cyano-4.alpha.,5.alpha.-epoxy-3-oxo steroid or a steroid fused at the 2- and 3-positions with a heterocyclic ring of controlled particle size which comprises dissolving the steroid in an organic solvent, precipitating the steroid by mixing a non-solvent for the steroid with the resulting solution, and controlling the time of mixing and the degree of agitation during mixing.

REFERENCES:
patent: 4277409 (1981-07-01), Warnart et al.
patent: 4391755 (1983-07-01), Wang et al.
patent: 4459235 (1984-07-01), Chenn et al.

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