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

Table 2

Proposed structures of Zn(II) and Cu(II) complexes from hydrazones 2a–2e (see Figure 11).

Entry	Metal complex	Yield (%)	Colour
3a		92	Bright yellow
3b		90	Dark yellow
3c		93	Dark yellow
3d		88	Shiny yellow
3e		92	Dark yellow
3f		90	Dark green
3g		87	Green
3h		89	Green
3i		86	Green
3j		91	Dark green