申请人:Rhone-Poulenc Industries
公开号:US04307233A1
公开(公告)日:1981-12-22
Novel 3-vinyl-cephalosporin derivates of the general formula ##STR1## in the bicyclooct-2-ene or bicyclooct-3-ene form, in which R.sub.1 is a protective radical or is a radical of the general formula ##STR2## in which R.sub.5 is hydrogen, alkyl, vinyl or cyanomethyl, or a protective radical, and R.sub.6 is hydrogen or a protective radical, and R.sub.2 is a protective radical or an enzymatically removable radical, or R.sub.1 is an acyl radical, which may carry various substituents, and R.sub.2 represents a protective radical, and R.sub.3 and R.sub.4, which are identical or different, represent alkyl (optionally substituted by hydroxyl, alkoxy, amino, alkylamino or dialkylamino) or phenyl, or form, together with the nitrogen atom, a saturated 5-membered or 6-membered heterocyclic ring optionally containing another hetero-atom, their E- and Z-forms and their mixtures, are useful as intermediates for the preparation of 3-thiovinyl cephalosporins useful as antibacterial agents.
具有通式##STR1##的新型3-乙烯基头孢菌素衍生物,以双环辛-2-烯或双环辛-3-烯形式存在,其中R1为保护基团或具有通式##STR2##的基团,其中R5为氢、烷基、乙烯基或氰甲基,或为保护基团,R6为氢或保护基团,R2为保护基团或酶可去除的基团,或R1为可带有各种取代基的酰基基团,R2表示保护基团,R3和R4相同或不同,表示烷基(可被羟基、烷氧基、氨基、烷基氨基或二烷基氨基取代)或苯基,或与氮原子一起形成含有另一个杂原子的饱和5元或6元杂环环,它们的E型和Z型及其混合物,可作为制备作为抗菌剂有用的3-硫代乙烯基头孢菌素的中介体。