TY - JOUR AU - , AB - Cephalosporin 3′-triphenylphosphonium ylide () reacted with acrylaldehyde to give the C-3,C-4 tricyclic compound (), while the sulphoxide of the ylide () upon similar treatment gave the C-2,C-3 tricyclic compound () which was converted into the ring-fused analogue () of nocardicin; desulphurization of this compound afforded the nocardicin nucleus () TI - Synthesis of tricyclic cephalosporins DO - 10.1039/c39840001705 DA - 1984-01-01 UR - https://www.deepdyve.com/lp/royal-society-of-chemistry/synthesis-of-tricyclic-cephalosporins-gwl4vr0yfW SP - 1705 EP - 1706 VL - IS - 24 DP - DeepDyve ER -