3,5,7-Trisubstituted pyrazolo[1,5-a]pyrimidines
US4093617A · kind A · utility
8Cited by
2References
8Claims
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Assignee
Inventors
Key dates
| Filing date | Jan 28, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Jan 28, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3,5,7-Trisubstituted pyrazolo[1,5-a]pyrimidines are disclosed of the general formula ##STR1## wherein R.sub.1 is CF.sub.3 or C.sub.1 -C.sub.9 alkyl; R.sub.2 is CF.sub.3 or C.sub.1 -C.sub.9 alkyl; and R.sub.3 is halogen. Such compounds are useful as inhibitors of 3',5'-cyclic AMP phosphodiesterase enzyme.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.