Dithiinoacetic acid and its preparation
US4178290A · kind A · utility
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5Claims
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Key dates
| Filing date | Jun 6, 1978 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Jun 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D339/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
.alpha.-Amino(1,3-dithiin-5-yl)-acetic acid in the D-, L-, or D,L-form and in which the amino radical is free or protected by tert.-butoxycarbonyl or 2,2,2-trichloroethoxycarbonyl is a useful intermediate in the preparation of cephalosporins having valuable antibacterial activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.