Spirocephams and have been obtained from aldehyde and hydroxylamine or hydrazine, as single diastereoisomers. Structures of these compounds have been elucidated by NMR experiments and MNDO calculations.
Novel Cephalosporins 1. Synthesis of 3-Benzothiopyranylthiovinyl Cephalosporins and Antibacterial Activity against Methicillin-resistant Staphylococcus aureus and Vancomy cm-resistant Enterococcus faecalis