Table 5.

NMR ¹H spectra of 14f–14k (DMSO-d6, δ).

№	14g	14h	14i	14j	14k
H-2	s 7.91	s 7.99	s 8.00	s 8.00	s 7.89
H-5	d 7.00 (J = 9.3 Hz)	m 7.04	m 7.02	d 7.05 (J = 8.5 Hz)	d 7.03 (J = 8.5 Hz)
H-6	m 7.62	m 7.72	m 7.69	bs 7.75	m 7.63
H-7	s 3.80	s 3.85	s 3.83	s 3.83	s 3.81
H-8	s 8.14	s 8.14	s 8.11	s 8.15	s 7.97
H-9	s 4.09	s 5.00	s 3.55	s 3.68	s 5.21
H-10			bs 2.57	bs 2.69
H-11	s 1.19 (t-Bu)		bs 3.07	bs 2.93
H-12	s 7.09	s 2.28 (Me)
H-13	s 7.18	m 7.06	m 6.90	m 6.87–6.94	2.34
H-14	s 2.21 (Me)	m 7.28	m 7.02	m 6.87–6.94	2.67
H-15	s 7.09	m 6.86		m 6.87–6.94
H-16			m 7.02	m 6.87–6.94
H-17			m 6.90	s 3.74 (OMe)
NH	s 11.32	s 11.33	s 11.29	s 11.34	s 11.33
NH2	s 7.62 and s 7.80	s 7.89 and s 7.93	m 7.69 and s 7.85	bs 7.72 and bs 7.90	s 7.75 and s 7.78