Tetracyclic heterocyclic derivatives, pharmaceutical composition

Details Tetracyclic heterocyclic derivatives, pharmaceutical composition Tetracyclic heterocyclic derivatives, pharmaceutical composition

1990-02-15

1991-03-12

Ramsuer, Robert W.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

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

514908, 548421, 548423, A61K 3140, C07D491048, C07D48704, C07D49504

Patent

active

049993690

ABSTRACT:
The present invention relates to compounds of formula (I)

REFERENCES:
patent: 3024248 (1962-03-01), Harvey

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