Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Patent
1989-08-24
1992-03-10
Springer, David B.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
546 21, 546 64, 546 65, A61K 3144, C07D491197
Patent
active
050950207
ABSTRACT:
The invention relates to a group of new .beta.-carbolines, their bio-isosteric benzofuran and benzothiophene analogues, and to the preparation of these compounds.
The new compounds can be represented by the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are hydrogen, or R+R.sub.1 or R.sub.1 +R.sub.2 form a saturated heterocyclic ring having 5 or 6 ring atoms, which comprise 1 or 2 oxygen atoms;
REFERENCES:
patent: 3644384 (1972-02-01), Schulenberg
Hulkenberg Antonius
Van Wijngaarden Ineke
Duphar International Research B.V.
Haley Jacqueline
Springer David B.
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