(2S,3R,4R,5S,6S)-5-tert-butyldimethylsilyloxy-6-iodomethyl-2-methoxy-4-(3-oxobutylcarbonyloxy)-3-phenylcarbonyloxytetrahydro-2H-pyran

(2R,4aR,6S,7R,8R,8aR)-6-methoxy-8-(3-oxobutylcarbonyloxy)-2-phenyl-7-phenylcarbonyloxyperhydropyrano[3,2-d][1,3]dioxine

(2R,4aR,6S,7R,8R,8aR)-8-hydroxy-6-methoxy-2-phenyl-7-phenylcarbonyloxyperhydropyrano[3,2-d][1,3]dioxine

(2R,4aR,6S,7R,8S,8aR)-8-hydroxy-6-methoxy-2-phenyl-7-phenylcarbonyloxyperhydropyrano[3,2-d][1,3]dioxine