17.alpha.-Pregn-4-ene-3-oxo-21-carboxylic acid esters, process f

Details 17.alpha.-Pregn-4-ene-3-oxo-21-carboxylic acid esters, process f 17.alpha.-Pregn-4-ene-3-oxo-21-carboxylic acid esters, process f

1983-07-22

1985-09-17

Roberts, Elbert L.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Cyclopentanohydrophenanthrene ring system doai

2603971, 26023957, A61K 3133

Patent

active

045421285

ABSTRACT:
17.alpha.-Pregn-4-ene-3-oxo-21-carboxylic acid esters of Formula I ##STR1## wherein C.sub.1 C.sub.2 is a CC single or C.dbd.C double bond,

REFERENCES:
patent: 3919199 (1975-11-01), Lenz
patent: 4180570 (1979-12-01), Wiechert et al.
patent: 4291029 (1981-09-01), Wiechert et al.
Chinn & al., J. Org. Chem., vol. 40, No. 9, 1975, pp. 1328-1331.

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