Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co LtdfiledCriticalSumitomo Chemical Co Ltd
Priority to JP2293176ApriorityCriticalpatent/JPS52106885A/en
Publication of JPS52106885ApublicationCriticalpatent/JPS52106885A/en
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Abstract
PURPOSE: Cephalosporins of formula I [A is mono-or polycyclic, N-containing hetero-ring; R is thienyl, cyclohexadienyl, cyclohexenyl, cyclohexyl; X is -OCOCH3, -S-Het (Het is 5W6-membered heterocyclic ring consisting of C and 1-4 hetero atoms selected from N,O, and S)] and their salts; for example, 7-[D-α-(4hydroxypyridine-3-carboxyamino)-α-(2-thienyl)acetamido] cephalosporanic acid of formula II.