Studies Directed Towards Stereospecific Synthesis of Oxybiotin, Biotin, and Their Analogs. III. Preparation of Some New 2,5-Anhydro-Xylitol Derivatives

Abstract Some new partially or fully tosylated and/or mesylated 2, 5-anhydro-xylitol derivatives have been prepared in this work. Some of them represent the real optically active intermediates in an attempted synthesis of selected (+)-oxybiotin analogs, while the others, being racemic, serve only as easily available model-intermediates.