New conformationally locked thioderivatives of mannose: synthesis, applications, and mechanistic studies

Tetrathiomolybdate has been used as an efficient sulfur-transfer reagent in the synthesis of a number of thiolevomannosan derivatives having an axial-rich 1C4 conformation. An unprecedented synthesis of a novel thioorthoester and its synthetic utility in glycosylation has been demonstrated. This is a general and efficient method for the synthesis of conformationally locked thiosugars.

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