1-Oxadethiapenicillins: synthesis and stereochemical assignments using lanthanide induced shifts
Abstract
(3S,4S)-4-Acetoxy-3-phenoxyacetamidoazetidin-2-one has been converted into 1-oxadethiapenicillins, the stereochemistry at C(3) being determined by n.m.r. and lanthanide induced shift studies.