96738-19-1Relevant articles and documents
Synthesis of Tricyclic Cephalosporins
Hatanaka, Minoru,Yamamoto, Yuichi,Ishimaru, Toshiyasu
, p. 1705 - 1706 (1984)
Cephalosporin 3'-triphenylphosphonium ylide (1) reacted with acrylaldehyde to give the C-3,C-4 tricyclic compound (3), while the sulphoxide of the ylide (1) upon similar treatment gave the C-2,C-3 tricyclic compound (4) which was converted into the ring-fused analogue (7) of nocardin; desulphurization of this compound afforded the nocardicin nucleus (10).