(-)-6-(4-fluorophenyl)tetrahydro-2H-pyran-2-one 、
dimethyl {3'-(benzyloxy)-4'-[(E)-(4-hydroxy-phenylimino)methyl]-biphenyl-4-yl}-phosphonate 在
lithium diisopropyl amide 作用下,
生成 dimethyl (3'-(benzyloxy)-4'-{(2S,3R)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxo-1-(4-hydroxy-phenyl)azetidin-2-yl}biphenyl-4-yl)phosphonate 、 dimethyl (3'-(benzyloxy)-4'-{(2R,3S)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-oxo-1-(4-hydroxy-phenyl)azetidin-2-yl}biphenyl-4-yl)phosphonate