Sheehan, J C Synthesis of 6-hydroxypenicillanates and 7-hydroxycephalosporanates. [electronic resource] - The Journal of organic chemistry May 1974 - 1444-5 p. digital Publication Type: Journal Article ISSN: 0022-3263 Standard No.: 10.1021/jo00926a034 doi Subjects--Topical Terms: Cephalosporins--chemical synthesisHydroxylationMethodsPenicillins--chemical synthesis