Desulphurative approaches to penem antibiotics. IV. Bromination of 3-methyl-2-thiacephems, a novel entry in the synthesis of potent antimicrobial agents
Displacement of leaving groups from a number of 2-oxo-azetidin-4-ylthio derivatives with sulphide or hydrosulphide salts conveniently affords 2-thiacephem, whose desulphurisation gives penems.
ALPEGIANI, M.;BEDESCHI, A.;FOGLIO, M.;FRANCESCHI, G.;PERRONE, E.
作者:ALPEGIANI, M.、BEDESCHI, A.、FOGLIO, M.、FRANCESCHI, G.、PERRONE, E.
DOI:——
日期:——
Cyclic thiosulfinates and thiosulfonates from oxidation of the 2-thiacephem ring system. Synthesis of (5R)-penems by stereospecific sulfur dioxide extrusion
Desulphurative approaches to penem antibiotics. IV. Bromination of 3-methyl-2-thiacephems, a novel entry in the synthesis of potent antimicrobial agents