Synthesis of acylated thioureylenedisaccharides

Abstract
Thioureylenedisaccharides have been prepared from sugar isothiocyanates and aminosugars. Thus, a thiourea bridge connects the (C-1)–(C-2) or (C-2)–(C-2) positions of some pentose, hexose, and heptose frameworks with different anomeric patterns in compounds (16)–(28). With this aim, several C-2-functionalised derivatives of compound (7) have been synthesized. A (Z,Z)-conformation is proposed for thioureylenedisaccharides in solution.

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