Benzyl N-((S)-2-hydr­oxy-1-{N′-[(E)-2-methoxy­benzyl­idene]hydrazinecarbon­yl}eth­yl)carbamate from synchrotron data

A U-shaped conformation is found in the title compound, C(19)H(21)N(3)O(5), with the benzene rings lying to the same side of the mol­ecule; the dihedral angle between them is 10.83 (16)°. The dihedral angle formed between the hydrazinecarbonyl and carbamate residues is 68.42 (13)°. The carbonyl groups lie approximately at right angles to each other [O—C⋯C—O pseudo torsion angle of 107.7 (3)°], and the conformation about the C12=N3 bond [1.279 (4) Å] is E. An intra­molecular N(cb)—H⋯O(hy) (cb = carbmate and hy = hydr­oxy) hydrogen bond occurs, generating an S(6) loop. In the crystal, inter­molecular O(h)—H⋯O(ca) (ca = carbon­yl) and N(hz)—H⋯O(ca) (hz = hydrazine) hydrogen bonds lead to the formation of a supra­molecular chain, two mol­ecules thick, which propagates along the a axis; these are connected by C—H⋯O(ca) contacts.