4-Halo steroids

Details 4-Halo steroids 4-Halo steroids

1979-08-20

1981-06-16

Roberts, Elbert L.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Bacterium or component thereof or substance produced by said...

26023955D, 2602395, 26039745, 26023955R, 424243, C07J 500

Patent

active

042737702

ABSTRACT:
Certain pregn-4-ene-3,20-diones or pregn-1,4-diene-3,20-diones 4-substituted with a fluoro or chloro are useful as topical anti-inflammatory steroids. These compounds are substituted at 9.alpha. with hydrogen, fluoro, chloro or bromo; at 6.alpha. with hydrogen, fluoro or chloro; at the 11 position with a keto, a .beta.-hydroxy or a .beta.-chloro (the latter only when there is a 9.alpha.-chloro); at 16.alpha., 17.alpha.-positions with isopropylidenedioxy or at 16.alpha.- (or 16.beta.) with methyl when 17.alpha. is hydroxy (or an ester); and at the 21-position with mono-fluoro, chloro, bromo, hydroxy or alkanoyloxy of 2-6 carbons or difluoro, dichloro, dihydroxy or dimethoxy.

REFERENCES:
patent: 2897199 (1959-07-01), Ringold et al.
patent: 3489748 (1970-01-01), Els et al.

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