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Production of 22iodomethylpenam compound
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Process for preparing 2-acyloxymethyl-penams and 3-acloxycephams
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Process for preparing azetidinones
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Antibacterial azetidinone derivs - also useful as inters to penicillins and cephalosporins
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Thiazoleneazetidinones from dithiazeneazetidinones
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Thiazoleneazetidinones from dithiazeneazetidinones
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Thiazoleneazetidinones from penicillin sulfoxides
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