Methods for the manufacture of quinolone carboxylic acids derivatives and intermediates thereof
US5914401A · kind A · utility
2Cited by
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16Claims
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Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Jun 22, 1999 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D215/56
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel process for the preparation of quinolone carboxylic acid derivatives of general formula I, and intermediates thereof as illustrated in Scheme 1 wherein the key intermediate is a compound of formula IX. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.