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US 3,939,151 AGranted
Displacement of the thiazolidine ring in penicillin with the formation of a biologically active cephem system
AssigneeMassachusetts Institute of Technology
InventorJohn C. Sheehan
Life of this patent
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Abstract
This invention relates to a new, biologically active material conforming to the formula ##SPC1## The material is formed by a process comprising displacement of the thiazolidine ring in Pencillin V and formation of the cephem system.
Claims1
A biologically active material of the formula ##SPC2##
Dependencies are inferred from the claim text.