Condensed purine derivatives
US5270316A · kind A · utility
23Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1990 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Oct 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
There are disclosed condensed purine derivatives represented by formula; ##STR1## in which R.sup.3 represents hydrogen, lower alkyl or benzyl; each of X.sup.1 and X.sup.2 independently represents hydrogen, lower alkyl, aralkyl or phenyl; and n is an integer of 0 or 1; R.sup.1 represents hydrogen, lower alkyl, alicyclic alkyl, noradamantan-3-yl, dicyclopropylmethyl or styryl; and R.sup.2 represents hydrogen, lower alkyl or alicyclic alkyl; or a pharmaceutically acceptable salt thereof. The derivatives and pharmaceutically acceptable salts are useful as diuretics, renal protecting agents, antiallergic agents and hypotensives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.