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

methyl 3-O-benzoyl-4,6-O-benzylidene-α-D-galactopyranoside

丙烯酰氯