Table 3.

¹H- (300.13 MHz) and ¹³C- (75.47 MHz) NMR data (CDCl₃, TMS δ = 0) for 3β-O-tigloylmelianol (1) and 3β-O-tigloylmeliantriol (4).

Position	1		4
	δC	δH, mult. (J in Hz)	δC	δH, mult. (J in Hz)
1	36.7	1.18–1.24, m	36.8	1.17–1.26, m
		1.62–1.70, m		1.59–1.69, m
2	23.8	1.87–2.01, m	23.8	1.91–2.01, m
		2.03–2.16, m		2.05–2.17, m
3	81.0	4.52, dd (10.9, 3.8)	81.0	4.52, dd (10.8, 4.1)
4	38.1		38.1
5	50.8	1.41, dd (11.7, 5.5)	50.8/50.9	1.40, dd (11.5, 5.7)
6	24.1	1.52, dd (11.7, 5.4)	24.1	1.61–1.71, m
		1.67, td (11.7, 2.6)
7	117.9/118.0	5.23, brd (2.6)	117.8/117.9	5.25, brd (4.6)
8	145.5		145.5/145.6
9	48.7/49.6	2.22, t (7.6)/2.23, t (2.6)	48.7/48.9	2.22, t (7.6)/2.23, t (7.6)
10	34.9		34.9
11	17.5	1.48, dt (7.6, 2.5)	17.5	1.44–1.54, m
12	35.2	1.36, dt (10.6, 2.5)	31.5	1.45–1.55, m
		2.04–2.16, m		1.65, dt (12.2, 3.4)
13	43.6/43.8		43.5/43.6
14	50.4		50.7/51.0
15	34.2	1.42–1.60, m	34.2	1.41–1.57, m
16	27.4	1.23–1.37, m	27.2	1.80–1.90, m
		1.78–1.94, m
17	45.2/47.1	1.98-2.10, m/1.91-2.06, m	45.2	1.96–2.03, m
18	22.5/23.2	0.83, s	23.2/22.4	0.81, s
19	13.1	0.75, s	13.1	0.75, s
20	31.7/33.8	1.43–1.57, m	46.4	1.88–1.98, m
		1.60–1.79, m
21	97.8/ 101.8	5.30, d (2.5)/5.34, d (2.6)	96.8/102.2	5.23, brs/5.31, brs
22	31.3/31.5	1.38–1.48, m	30.3	1.84–1.91, m
		1.94–2.02, m
23	77.0/78.4	3.84, dt (9.5, 75)/	77.0/78.6	4.32–4.35, m/
		3.90, ddd (10.6, 7.7, 5.1)		4.49–4.54, m
24	65.4/67.8	2.68, d (7.5)/2.83, d (7.5)	75.0/75.8	3.11, brs/3.19, brs
25	57.2/57.9		73.1/73.6
26	19.2/19.4	1.28, s	26.7	1.22, s
27	24.9/25.0	1.28, s	26.7	1.25, s
28	27.6	0.83, s	27.6	0.83, s
29	16.0	0.95, s	16.0	0.95, s
30	27.3	0.95, s	27.3	0.96, s
1'	167.9		168.0
2'	129.2		129.1
3'	136.7	6.81, brq (7.1)	136.7	6.82, qq (6.8,1.3)
4'	14.3	1.76, d (7.1)	14.3	1.76, d (6.8)
5'	12.1	1.80, brs	12.0	1.81, d (1.3)