methyl (2R,6R)-6-[[(2R,6S)-2-methoxycarbonyl-4-methyl-3,6-dihydro-2H-pyran-6-yl]methyl]-4-methyl-3,6-dihydro-2H-pyran-2-carboxylate 在
二异丁基氢化铝 作用下,
以
乙醚 为溶剂,
生成 [(2R,6R)-6-((2S,6R)-6-Hydroxymethyl-4-methyl-5,6-dihydro-2H-pyran-2-ylmethyl)-4-methyl-3,6-dihydro-2H-pyran-2-yl]-methanol