Total synthesis of (.+-.)-1-carbacefoxitin and -cefamandole and (.+-.)-1-oxacefamandole

Abstract
The total syntheses of the (.+-.)-1-carba analogues of cefoxitin, 7.alpha.-methoxydeacetylcephalothin and cefamandole and the (.+-.)-1-oxa analogue of cefamandole are described. Their bioactivity spectra against 14 typical organisms [bacteria] are similar to those of their natural 1-thia counterparts, with the 1-carba compounds somewhat less active and the 1-oxa compound more active than the natural ones.

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