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US 4,052,412 AGranted
Benzo cycloheptathiophene carboxylic acid derivatives
AssigneeSandoz Ltd.
InventorJean-Michel Bastian
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Abstract
This invention provides new compounds of formula I, ##STR1## wherein R.sub.1 is hydrogen, halogen of atomic number from 9 to 35 or lower alkyl, R.sub.2 is hydrogen or lower alkyl, each of R.sub.3 and R.sub.4 is hydrogen, or R.sub.3 and R.sub.4 together are oxygen, n is 2, 3 or 4, and A is ethylene or vinylene, Useful as antiphlogistics and anti-arthritics.
Claims27
A compound of formula I, ##STR8## wherein R.sub.1 is hydrogen, halogen of atomic number from 9 to 35 or lower alkyl,
- R.sub.2 is hydrogen or lower alkyl,
- R.sub.3 and R.sub.4 together are oxygen,
- n is 2, 3 or 4, and
- A is ethylene or vinylene,
- or when R.sub.2 is hydrogen alternatively in pharmaceutically acceptable salt form.
2 more elements
Dependencies are inferred from the claim text.