(1S)-1-[(3aR,5R,6S,6aR)-2,2-dimethyl-6-phenylmethoxy-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]propan-1-ol 、
对苯基苯甲醛 在
三氟化硼乙醚 作用下,
以
二氯甲烷 为溶剂,
以61%的产率得到(5S)-5-[(3aR,5R,6S,6aR)-2,2-dimethyl-6-phenylmethoxy-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]-2-(4-phenylphenyl)-4,5-dihydro-1,3-oxazole