(2S,3R)-2,4-dimethyl-3-phenylmethoxypentanal 、
[(2R,3S,6R)-6-(2-aminooxyethyl)-3-(4-methoxyphenoxy)-3,6-dihydro-2H-pyran-2-yl]methyl N-propylcarbamate 在
溶剂黄146 作用下,
以
乙酸乙酯 为溶剂,
以91.5%的产率得到Propyl-carbamic acid (2R,3S,6R)-6-{2-[(2R,3R)-3-benzyloxy-2,4-dimethyl-pent-(E)-ylideneaminooxy]-ethyl}-3-(4-methoxy-phenoxy)-3,6-dihydro-2H-pyran-2-ylmethyl ester