benzyl (5R,6S)-3-dimethoxyphosphoryl-2-oxo-5,6-diphenyl-morpholin e-4-carboxylate

五甲氧基膦烷

2-[[(1,1-二甲基乙氧基)羰基]氨基]-2-(二甲氧基膦)乙酸乙酯

methyl (E)-4-oxo-4-phenylbut-2-enoate

三氟乙酸甲酯