Dihydrophenazinecarboxylic acid derivatives
US6150363A · kind A · utility
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6Claims
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Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Nov 21, 2000 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D241/48
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dihydrophenazinecarboxylic acid derivatives of the formula (I) wherein R.sup.1 represents hydrogen, linear or branched alkyl, etc., each of R.sup.2 and R.sup.3 represents hydrogen, 3-methyl-2-butenyl, etc., and each of R.sup.4 and R.sup.5 represents hydrogen, alkyl, alkenyl, aralkyl, aryl, hydroxyl, alkoxy, aryloxy, aralkyloxy, halogen, nitro, cyano, alkylsulfonyl, arylsulfonyl, alkylcarbonyl, arylcarbonyl, etc., provided that there is no case that both of R.sup.4 and R.sup.5 are hydrogen. The dihydrophenazinecarboxylic acid derivatives are excellent in the inhibition of glutamic acid toxicity. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.