Antihistaminic piperidine derivatives and intermediates for the preparation thereof
US6689898B2 · kind B2 · utility
0Cited by
20References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Feb 10, 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 the 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; X is Cl, Br or I; or stereoisomers thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.