Pentacyclic compounds, intermediates, processes, compositions, a

Details Pentacyclic compounds, intermediates, processes, compositions, a Pentacyclic compounds, intermediates, processes, compositions, a

1997-06-19

1999-12-21

Huang, Evelyn Mei

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

514285, 5142328, 544125, 546 61, 546 62, 546 70, A61K 3144, C07D22118, C07D47122

Patent

active

060049715

ABSTRACT:
The present invention provides compounds of formula I and II: ##STR1## wherein X is --O--, --S--, or --NR.sup.5 --;

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Fujisaki, et al Nippon Kagaku Kaishi, 739-42 (1979).
Triphenylmethyl, XXXIII, Quinoidation in the Triarylmethyls, M. Gomberg, and F.F. Blicke, J.A.C.S., 45,1765-79 (1923).
Halochromic Salts From Some Triarylmethylthioglycolic Acids, M. Gomberg, and W. E. Gordon, J.A.C.S. 57, 119-24 (1935).

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