SYNTHESIS OF SARMENTOSIN / 药学学报

AIM: The synthesis of sarmentosin. METHODS: Condensation of butane-1,2,4-triol-1,2-acetonide(3) with α-D-glucopyranosyl bromide tetraacetate in the presence of Ag2O and molecular sieves gave the desired β-glucoside 4,which was transformed into sarmentosin via a reaction sequence of 7 steps. RESULTS: The overall yield is 5.8%. CONCLUSION: The first synthesis of sarmentosin(1),a potent natural GPT lowering agent,was achieved.