Sialic acid derivatives and process therefor
US4990603A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Feb 5, 1991 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H3/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to sialic acid derivatives. According to the present invention, there is provided sialic acid derivatives having the general formula (I): ##STR1## wherein, R.sup.1 represents hydrogen, an acetyl group, a trityl group, ##STR2## (R.sup.5 represents hydrogen or an acetyl group and R.sup.6 represents hydrogen, sodium or a methyl group). R.sup.2 represents hydrogen or an acetyl group, PA1 one of R.sup.3 and R.sup.4 represents ##STR3## (R.sup.7 represents a hydrogen atom or an acetyl group, R.sup.8 represents a hydrogen atom, an acetyl group or a benzyl group, R.sup.9 represents a hydrogen atom, an acetyl group, a benzyl group or ##STR4## wherein R.sup.10 represents a hydrogen atom or a benzoyl group), while the other represents --COOR.sup.11 wherein R.sup.11 represents hydrogen, sodium, or a methyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.