methyl (1S,4aS,6S,7R,7aS)-6-acetyloxy-1-[[(2S,3R,4S)-3,4-diacetyloxy-6-(hydroxymethyl)-3,4-dihydro-2H-pyran-2-yl]oxy]-7-methyl-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate 在
ammonium hydroxide 作用下,
以
甲醇 为溶剂,
反应 3.0h,
以52%的产率得到methyl (1S,4aS,6S,7R,7aS)-6-acetyloxy-1-[[(2S,3R,4S)-3,4-dihydroxy-6-(hydroxymethyl)-3,4-dihydro-2H-pyran-2-yl]oxy]-7-methyl-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate