Certain 7-oxo-4-thio-2,6-diazabicyclo-3,2,0-hept-2-ene compounds
US4079181A · kind A · utility
13Cited by
1References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 17, 1976 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An intermediate represented by following formula for synthesizing 3-hydroxy-3-cephem compounds. ##STR1## wherein A and B each is a hydrogen or amino substituent; R is a hydrogen or thiol substituent; Hal is a halogen; X is a hydroxy or carboxy protecting group; the broken line between A and R shows that when R and B are hydrogens, and A is a carboxylic acyl, the substituents can be combined to form an azetidinothiazoline bicyclic ring; and the enamine derivatives thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.