Process for the preparation of penems
US5191075A · kind A · utility
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21References
19Claims
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Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D499/88
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An efficient, multistep process for the synthesis of certain 6-(1-hydroxyethyl) 2-substituted penem antibiotics from 2-[4R-(triphenylmethylthio)-3S-(1R-(dimethyl-t-butylsilyloxy)ethyl)-2-azet idon-1-yl]acetic acid esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.