methyl (1R,4aS,5S,6R,7R,7aR)-6-benzoyloxy-5-hydroxy-7-methyl-1-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate 、 methyl (1R,4aS,5S,6R,7R,7aR)-5,6-dibenzoyloxy-7-methyl-1-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate 、 methyl (1R,4aS,6S,7R,7aR)-6-benzoyloxy-7-methyl-1-[(2S,3R,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate 、
硫酸 生成
2,5-二甲基-3-呋喃甲酰氯