Table 4.

NMR data of aplysinin B (3) (600 MHz, DMSO-d₆) and compound 21.

position	3			21a
	δC	δH		δC
1	134.9, C	–		136.36
2, 6	131.7, CH	7.88, 2H, s		132.98
3, 5	118.5, C	–		119.48
4	154.4, C	–		154.46
7	135.7, CH	7.33, d (15.8)		138.42
8	124.9, CH	6.66, d (15.8)		123.95
9	165.0, C	–		167.50
10	38.4, CH2	3.20, 2H, m		39.27
11	28.1, CH2	1.71, 2H, m		25.92
12	22.0, CH2	2.45, 2H, m		125.89
13	126.8, C	–		110.87
14	109.2, CH	6.60, s		146.43
15	147.4, C	–		–
4-OMe	61.0, CH3	3.82, s		61.26
9-NH	–	8.17, t (5.58)		–

^aThe ¹³C NMR data were obtained in CD₃OD [38].