Benzo(1,8)naphthyridine derivatives as intermediates
US4970213A · kind A · utility
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7Claims
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Key dates
| Filing date | Jan 16, 1990 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Jan 16, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P31/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
New benzo[b][1,8]naphthyridine derivatives of general formula (I) in which R is a hydrogen atom or an alkyl, fluoroalkyl, cycloalkyl (3 to 6 C), alkoxy, alkylamino or protected alkylamino radical, Hal is F, Cl or Br if R' is hydrogen, or Hal and R' are F, and Alk is an alkyl radical, and their preparation. These new products can be used as intermediates for the preparation of biologically active products. ##STR1##
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