A new 14-step synthesis of (+)-oxybiotin, an oxygen analogue of (+)-biotin, was achieved starting from D-xylose by use of selected 2,5-anhydro sugar derivatives as key intermediates.
A stereospecificsynthesis of 2(S)-carbomethoxy-butyl-3(R), 4(S)-diacetamido-tetrahydrofurane (11), the final chiral precursor in a new synthesis of (+)-oxybiotin has been achieved from 2, 5-anhydro-D-xylose derivative1.