Compounds
US4211788A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 1978 |
| Grant date | Jul 8, 1980 |
| Priority date | — |
| Expiry date | May 11, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/94
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are described compounds of formula I, ##STR1## in which E is a --COOH, a 5-tetrazolyl or an (N-tetrazol-5-yl) carboxamido group, PA1 R.sub.3 is hydrogen or alkyl, PA1 an adjacent pair of W, X, Y and Z form a 5 membered chain comprising alkylene groups and optionally one or two oxygen atoms, the chain optionally being substituted by one or two alkyl groups, PA1 the remaining substituents W, X, Y or Z are hydrogen; halogen; alkyl optionally substituted by one or more of the groups hydroxy, halogen, carbonyl oxygen, phenyl, or alkoxy; alkenyl optionally substituted by phenyl; hydroxy; alkoxy; alkanoyloxy; alkenyloxy; nitro; --NR.sub.1 R.sub.2 or hydroxyalkoxy, PA1 R.sub.1 and R.sub.2, which may be the same or different, are each hydrogen or alkyl, PA1 and pharmaceutically acceptable derivatives thereof. There are also described processes for making the compounds and pharmaceutical, e.g. anti-allergic, compositions containing the compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.