AbstractA new rearrangement of cephem bromohydrins 2–5 to thiazepine derivatives 7–8 is described. The structure of the rearrangement product is established by an independent synthesis. The probable mechanism of the above rearrangement is discussed.
AbstractA new rearrangement of cephem bromohydrins 2–5 to thiazepine derivatives 7–8 is described. The structure of the rearrangement product is established by an independent synthesis. The probable mechanism of the above rearrangement is discussed.