Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Monocyclic β-lactams 1–3 substituted at C-4 with enediyne moiety have been synthesized via Pd(0) mediated coupling reaction. Their antibacterial activity against ampicillin-resistant E. coli have been tested. ... The molecules 1, 2 and 3 have been synthesized and their ...