Method of resolving cis 3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2-one using (-)-DAG
US5030725A · kind A · utility
2Cited by
6References
1Claims
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Key dates
| Filing date | Feb 6, 1990 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Feb 6, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D405/06
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Cis .alpha.,.alpha./.beta., .beta.-3-amino-4-[2-(2-furyl)eth-1-yl]-1-methoxycarbonylmethyl-azetidin-2- one is resolved via (-)-2,3:4,6-di-O-isopropylidene-2-keto-L-gulonic acid hydrate (DAG).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.