Sparfloxacin-Metal Complexes as Urease Inhibitors: Their Synthesis, Characterization, Antimicrobial, and Antienzymatic Evaluation

Table 3

¹H-NMR data of SPFX and its metal complexes.

S. no.	Complexes	H-NMRδ: ppm
1	SPFX	0.53–0.28 (3H-cyclopropyl), 3.56–3.31 (m, 4H, piperazinyl ring protons), 4.0 (NH2), 7.96 (1H-phenyl), 8.51 (1H-quinolone), 11 (1H–OH, carbonyl).
2	S12	1.17–1.53 (5H-cyclopropyl), 3.04–3.31 (singlet piperazinyl ring), 3.91 (NH2), 7.24 (1H-phenyl), 8.62 (1H-quinolone).
3	S13	1.04–1.20 (5H-cyclopropyl), 3.29–3.31 (singlet piperazinyl ring), 3.92 (NH2), 6.44 (1H-phenyl), 8.62 (1H-quinolone).
4	S14	1.03–1.06 (3H-cyclopropyl), 3.20–3.31 (piperzinyl), 3.98 (NH2), 6.450–7.20 (phenyl), 8.46 (1H–CH2).
5	S15	1.17–1.21 (4H-cyclopropyl), 3.29–3.31 (singlet piperazinyl ring), 3.90 (NH2), 6.44 (1H-phenyl), 8.61 (1H-quinolone).