6-Acetyl-3,4-dihydro-2,2-dimethyl-trans-4-piperidino-2H-benzo[b]pyran-3-ol 、
硼氢化钠 以
甲醇 、
水 为溶剂,
反应 2.08h,
以gave 1-hydroxy-1-[trans-2,2-dimethyl-3-hydroxy-4-piperidinochroman-6-yl]-ethane (1.00 g) which的产率得到(3S,4R)-6-(1-Hydroxy-ethyl)-2,2-dimethyl-4-piperidin-1-yl-chroman-3-ol