Alpha-amino-dithiino-acetic acid and (N)-protected derivs. - used as intermediates for antibacterial cephalosporin(s)

摘要

The dithiine deriv. of formula (I), in D, L or DL forms, and its N-tert.butoxycarbonyl or N-2,2,2-trichloroethoxycarbonyl derivs. are new.