Antihistaminic piperidine derivatives and intermediates for the preparation thereof
US6673933B2 · kind B2 · utility
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19References
2Claims
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Assignee
Inventor
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Mar 22, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D211/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to novel compounds of formula: whereinR1 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.