Synthesis and Biological Evaluation of New Hydrazone Derivatives of Quinoline and Their Cu(II) and Zn(II) Complexes against Mycobacterium tuberculosis

Table 4

¹³C NMR for hydrazones (2a–2e) and their assignments.

Hydrazones	-C=O amide	-C-OH phenolic	-CH=N- azomethine
2a	163.01	161.63	144.63
2b	164.80	162.52	140.97
2c	165.31	160.40	141.29
2d	168.50	162.75	143.72
2e	168.40	161.96	146.95