121534-48-3Relevant articles and documents
STUDIES RELATED TO PENICILLINS. PART 27. A STRATEGY FOR THE CONVERSION OF 1,1-DIOXIDES OF PENICILLANATES INTO 1,1-DIOXIDES OF 3-METHYLCEPH-3-EM-4-CARBOXYLATES
Ananda, G. D. Sriyani,Stoodley, Richard J.
, p. 3359 - 3366 (2007/10/02)
Methodology for the conversion of benzyl (3S,5R)-penicillinate 1,1-dioxide (2b) into (6R)-4-benzyloxycarbonyl-3-methylceph-3-em 1,1-dioxide (3b) has been devised.In the process, the 3,4-double bond of the product was constructed by a reductive carbonyl-ca