There are two independent mol-ecules per asymmetric unit of the title compound, C(26)H(23)N(2)O(3)PS. Their superposition shows that they differ in the conformation of the CH(3)CO- group and the benzene rings from the triphenyl-phospho-rane group. In the crystal structure, independent mol-ecules are inter-conected by strong N-H⋯O hydrogen bonds, forming infinite chains along the a axis.