Chiral 3-(1,2,5-trisubstituted imidazolidinone) azetidinone antibiotic intermediates
US4772694A · kind A · utility
15Cited by
2References
16Claims
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Inventor
Key dates
| Filing date | Jul 24, 1986 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Jul 24, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D413/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
2,5-Disubstituted oxazolidin-4-one-3-ylacetyl chlorides and 1,2,5-substituted imidazolidin-4-one-3-yl-acetyl chlorides function as chiral auxiliary moieties in the asymmetric cycloaddition with aldimines to provide cis-azetidinones. The azetidinones are useful intermediates in the preparation of antibiotics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.