Table 4. Chemical Shifts of Emo-Cop NFs, Rhe-Cop NFs, and Coptisine.

Cop	Rhe-Cop NFs	Δδ (ppm)	Emo-Cop NPs	Δδ (ppm)
9.97 (H-8, s)	9.92 (s)	–0.05	9.90 (s)	–0.07
8.99 (H-13, s)	8.90 (s)	–0.09	8.88 (s)	–0.11
8.03 (H-11, d, J = 8 Hz)	7.99 (d, J = 8 Hz)	–0.04	7.98 (d, J = 8 Hz)	–0.05
7.84 (H-12, d, J = 8 Hz)	7.77 (t, J = 8 Hz, J = 4 Hz)	–0.07	7.76 (t, J = 8 Hz, J = 12 Hz)	–0.08
7.79 (H-1, s)	7.74 (s)	–0.05		–0.03
7.08 (H-4, s)	7.05 (s)	–0.03	7.05 (s)	–0.03
6.54 (15-CH2, s)	6.52 (s)	–0.02	6.51 (s)	–0.03
6.17 (14-CH2, s)	6.16 (s)	–0.01	6.16 (s)	–0.01
4.90 (6-CH2, t, J = 8 Hz, J = 4 Hz)	4.88 (t, J = 8 Hz, J = 4 Hz)	–0.02	4.87 (s)	–0.03
3.20 (5-CH2, t, J = 8 Hz, J = 4 Hz)	3.19 (t, J = 8 Hz, J = 4 Hz)	–0.01	3.19 (s)	–0.01