J Antibiot (Tokyo) 2000 May;53(5):551-5

Novel cephalosporins 2. Synthesis of 3-heterocyclic-fused thiopyranylthiovinyl cephalosporins and antibacterial activity against methicillin-resistant Staphylococcus aureus and vancomycin-resistant Enterococcus faecalis.

Yamazaki H, Tsuchida Y, Satoh H, Kawashima S, Hanaki H, Hiramatsu K.

Research Laboratory, Zenyaku Kogyo Co Ltd, Tokyo, Japan