2,4-diaminopyrimidine 3-oxide derivatives and their use for the treatment and prevention of hair loss
US4973474A · kind A · utility
16Cited by
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18Claims
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Key dates
| Filing date | Jul 31, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Jul 31, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q7/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
New 2,4-diaminopyrimidine 3-oxide derivatives and their use for the treatment and the prevention of hair loss. The compounds correspond to the formula: ##STR1## in which: R.sub.1 and R.sub.2 denote hydrogen or the groups of formula: ##STR2## with R'.sub.3 =H or R.sub.3, in which R.sub.3 denotes alkyl, alkenyl or cycloalkyl; R.sub.3 may also denote an aryl or aralkyl radical. PA0 R denotes alkyl, alkenyl or cycloalkyl capable of bearing an unsaturation or alkyl bearing an aromatic or heterocyclic nucleus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.