A process for the preparation of compounds of formula (I) IMAGE (I) wherein R1 is hydrogen or an organic group; R2 is hydrogen or a carboxy protecting group; and Y is a group-S-heterocyclic, acyloxy, alkoxy, alkylthio, pyridyl, which group may be substituted, or azido, and penem derivatives falling within the scope of formula (I) and pharmaceutically or veterinarily acceptable salts thereof. The process involves displacing a group L in the Y position with a reagent Y-H.
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机译:制备式(I)化合物的方法:其中R 1为氢或有机基团。 R 2为氢或羧基保护基; Y是可以被取代的基团-S-杂环基,酰氧基,烷氧基,烷硫基,吡啶基或叠氮基,以及属于式(I)范围内的青霉烯衍生物及其药学上或兽医学上可接受的盐。该方法涉及用试剂Y-H置换在Y位置的基团L。
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