(1S,3RS,4R,7S)-3-methoxy-7-(p-methoxybenzyloxy)-1-(p-methoxybenzyloxymethyl)-2,5-dioxabicyclo[2.2.1]heptane

(2R,3S,4S)-4-hydroxy-3-(p-methoxybenzyloxy)-4-(p-methoxybenzyloxymethyl)tetrahydrofuran-2-carbaldehyde

(1S,3S,4R,7S)-7-hydroxy-1-hydroxymethyl-3-pyren-1-yl-2,5-dioxabicyclo[2.2.1]heptane

(1S,3S,4R,7S)-7-(p-methoxybenzyloxy)-1-(p-methoxybenzyloxymethyl)-3-phenyl-2,5-dioxabicyclo[2.2.1]heptane

(1R,3S,4R,7S)-1-(4,4'-dimethoxytrityloxymethyl)-7-hydroxy-3-phenyl-2,5-dioxabicyclo[2.2.1]heptane