Process for preparing N-acetylneuraminic acid derivatives
US4914195A · kind A · utility
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Key dates
| Filing date | Nov 26, 1984 |
| Grant date | Apr 3, 1990 |
| Priority date | — |
| Expiry date | Nov 26, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H19/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A new process for preparing halides of N-acetylneuraminic acids useful as an intermediate in preparing new N-acetylneuraminic acid derivatives having an excellent immunological activity is provided, which process comprises simultaneously acetylating and halogenating an esterified N-acetylneuraminic acid with the aid of an acetyl halide, and according to the process, the halides may be obtained in high yield of about 90%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.