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US 6,673,933 B2Granted
Antihistaminic piperidine derivatives and intermediates for the preparation thereof
AssigneeAventis Pharmaceutical Inc.
InventorTimothy A. Ayers
Life of this patent
Estimating the term…
Abstract
This invention relates to novel compounds of formula: wherein R1 is H or C1-C6alkyl and the C1-C6alkyl moiety is straight or branched; R2 and R3 are each independently C1-C6alkyl and the C1-C6alkyl moiety is straight or branched; or stereoisomers or pharmaceutically acceptable acid addition salt thereof.
Claims2
A compound of the formula
- wherein
- R1 is H or C1-C6alkyl and the C1-C6alkyl moiety is straight or branched;
- R2 and R3 are each independently C1-C6alkyl and the C1-C6alkyl moiety is straight or branched;
- or stereoisomers or pharmaceutically acceptable acid addition salt thereof.
1 more element
Dependencies are inferred from the claim text.