3-Acetoxy-3-{(4R,5R)-5-[(R)-1-acetoxy-2-(tert-butyl-diphenyl-silanyloxy)-ethyl]-2,2-dimethyl-[1,3]dioxolan-4-yl}-2-diazo-propionic acid ethyl ester

ethyl 2,6-anhydro-3-deoxy-4,5-O-diacetyl-7,8-O-isopropylidene-D-gluco-D-glycero-octanoate