(3S,5S)-5-[(1R,2S,4R)-4-(2-Benzyloxymethyl-[1,3]dioxolan-2-yl)-1-hydroxy-2-methyl-pentyl]-3-methyl-dihydro-furan-2-one 在
硫酸 作用下,
以
丙酮 为溶剂,
以46%的产率得到(3S,5S)-5-((2R,3S,5R)-6-Benzyloxymethyl-6-hydroxy-3,5-dimethyl-tetrahydro-pyran-2-yl)-3-methyl-dihydro-furan-2-one