.beta.-Lactam antibiotics having an .alpha.-formamido substituent on the carbon atom adjacent to the carbonyl group of the .beta.-lactam ring and in particular bicyclic compounds having the partial structure: ##STR1## Intermediates and processes for the preparation of the compounds are further disclosed.
Penicillin C-6 substitution using the versatile 6α-succinimido-oxy leaving group
作者:Andrew V. Stachulski
DOI:10.1039/c39860000401
日期:——
te with N-hydroxysuccinimide catalysed by silver(I) acetate afforded the stable 6α-(succinimido-oxy) dervative; this species on reaction with various nucleophiles gave a range of 6α-substituted penicillins, including some not directly available from the 6α-(methylthio) compound.