(2R,4S,5R,6R)-2-Acetoxy-5-acetylamino-4-methoxymethoxy-6-((2R,4S,5R)-5-methoxymethoxy-2-methyl-[1,3]dioxan-4-yl)-tetrahydro-pyran-2-carboxylic acid ethyl ester

(2S,4R,5R,6R)-5-Acetylamino-4-methoxymethoxy-6-((2R,4S,5R)-5-methoxymethoxy-2-methyl-[1,3]dioxan-4-yl)-tetrahydro-pyran-2-carboxylic acid ethyl ester

(2R,4S,5R,6R)-2-Acetoxy-5-azido-4-methoxymethoxy-6-((2R,4S,5R)-5-methoxymethoxy-2-methyl-[1,3]dioxan-4-yl)-tetrahydro-pyran-2-carboxylic acid ethyl ester