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US 3,946,060 AGranted
Acetylene derivatives
AssigneeRichardson-Merrell Inc.
InventorsBrian Walter Metcalf, Michel Jung
Life of this patent
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Abstract
Novel compounds of the following general formula are useful pharmacologic agents and are useful as intermediates for the preparation of pharmacologically useful compounds. ##EQU1## wherein R.sub.1 is selected from a lower alkyl group having from 1 to 4 carbon atoms, R.sub.2 is selected from hydrogen and phenyl; and R.sub.3 is selected from phenyl and trialkylmethyl; and acid addition salts thereof.
Claims2
A compound selected from a base of the formula:
- wherein R.sub.1 is selected from a lower alkyl group having from 1 to 4 carbon atoms;
- R.sub.2 is selected from hydrogen and phenyl;
- R.sub.3 is selected from phenyl and trialkylmethyl with the proviso that when R.sub.3 is trialkylmethyl, R.sub.2 is hydrogen;
- and acid addition salts thereof.
1 more element
Dependencies are inferred from the claim text.