发明公开
EP0387448A2 Photochemical conversion of cephalosporins, 1-carba(dethia)cephalosporins and 1-oxa(1-dethia)cephalosporins 失效
Photochemische Umwandlung von Cephalosporinen,1-Carba(dethia)cephalosporinen und 1-Oxa(1-dethia)cephalosporinen。

Photochemical conversion of cephalosporins, 1-carba(dethia)cephalosporins and 1-oxa(1-dethia)cephalosporins
摘要:
A process for photochemically converting 3-exomethylene cephams (or 1-carba(1-dethia)cephams or 1-oxa(1-dethia)cephams) from the corresponding 3-alkyl-­3-cephem (or 1-carba(1-dethia)cephem or 1-oxa(1-­dethia)cephem) is provided. Further provided are 3-cephams useful as intermediates to 3-cephem compounds.
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