Process for preparing piperidinyl benzimidazoles
US5182399A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Jul 18, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention is directed to a new class of piperidinyl benzimidazole antihistamines which can be described by the following formula: ##STR1## wherein Y is represented by CO or CHOH; m is an integer from 1 to 2; R is represented by C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, hydroxy and hydrogen; X is represented by hydrogen, COOR.sub.2, in which R.sub.2 is represented by a C.sub.1-4 alkyl, or an alkylene phenyl radical of the formula: ##STR2## wherein T is represented by CHOH, CO, O, or a direct bond; R.sub.1 is represented by C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen, hydroxy, 2,2-dimethyl ethanoic acid and hydrogen; n is an integer from 1 to 5; and the pharmaceutically acceptable acid addition salts thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.