Methyl (2′R,3′R)-2-azido-2,6-di­deoxy-3,4-O-(2′,3′-di­methoxy­butane-2′,3′-diyl)-α-l-gluco­pyran­oside

Unlike other α-manno­pyran­oside-2-sulphonates, the 2-O-tri­fluoro­methylsulfonyl (tri­fluoro­methane­sulfonate) derivative, (II), underwent an S_N2 displacement with an azide ion to give methyl (2′R,3′R)-2-azido-2,6-di­deoxy-3,4-O-(2′,3′-di­meth­oxy­butane-2′,3′-diyl)-α-l-gluco­pyran­oside, C₁₃H₂₃N₃O₆, (IV), in preference to the E2 reaction.