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. Author manuscript; available in PMC: 2021 Jun 1.

Published in final edited form as: Phytochemistry. 2020 Mar 28;174:112360. doi: 10.1016/j.phytochem.2020.112360

Table 2.

¹H (600 MHz) and ¹³C (150 MHz) data of 4–6 in CDCl₃ (δ in ppm, J in Hz).

	4		5		6
Position	δ_C	δ_H	δ_C	δ_H	δ_C	δ_H
1	160.3	7.64, brs	160.2	7.59, brs	160.7	7.58, brs
2	134.1		133.5		133.6
3	206.5		207.7		208.5
4	73		75.6		72.9
5	126.7	6.11, brs	37.3	2.47, d (117.0)	34.7	2.91, d (19.7)
				2.10, d (17.0)		2.47, d (19.7)
6	153.1		62.5		143.0
7	70.6	4.82, d (8.9)	63.4	3.32, d (8.3)	158.3	6.74, dd (2.1,21)
8	48.7	2.29, m	42.5	1.95, dd (4.6,4.6)	41.6	3.39, t (12.0)
9	73.2		74.3		74.3
10	56.1	3.09, m	55.6	3.44, brs	55.9	3.11, m
11	37.9	2.05, m	36	1.90, m	36.7	1.90, m
12	31.8	2.10, m	31.6	2.03, m	31.9	2.11, m
		1.30, m		1.57, m		1.62, m
13	64.1		63		63.1
14	27.8	1.32, m	30.2	0.98, d (4.6)	32.3	0.98, d (4.6)
15	22.8		22.8		22.8
16	23.1	1.23, s	23.3	1.23, s	23.3	1.26, s
17	15.9	1.04, s	15.6	1.06, s	15.4	1.11, s
18	18.7	0.94, d (6.5)	18.1	0.88, m	18.7	0.91, m
19	10.4	1.81, brs	10.4	1.79, dd (2.7, 1.1)	10.2	1.81, dd (1.2,1.2)
20	67.5	4.37, dd (13.9,13.9)	65.6	3.53, d (7.4)	193.9	9.45, s
		4.31, dd (13.9,13.9)		3.53, d (7.4)
1'	176.3		176.3		176.3
2'	34.8	2.32, t (12.0)	34.8	2.31, t (12.0)	34.8	2.35, t (18.0)
3'	24.9	1.61, m	24.9	1.58, m	24.9	1.62, m
4'	22.8	1.31, m^*	22.8	1.26, m^*	22.8	1.26, m^*
5'	29.3^*	1.31, m^*	29.3^*	1.26, m^*	29.3^*	1.26, m^*
6'	29.4^*	1.31, m^*	29.4^*	1.26, m^*	29.4^*	1.26, m^*
7'	29.5^*	1.31, m^*	29.5^*	1.26, m^*	29.5^*	1.26, m^*
8'	29.6^*	1.31, m^*	29.6^*	1.26, m^*	29.6^*	1.26, m^*
9'	29.7^*	1.31, m^*	29.7^*	1.26, m^*	29.7^*	1.26, m^*
10'	32.1	1.31, m^*	29.7^*	1.26, m^*	32.1	1.26, m^*
11'	22.8	1.22, m	29.7^*	1.26, m^*	22.8	1.22, m
12'	14.3	0.91, m	32.1	1.26, m^*	14.3	0.91, m
13'			22.8	1.22, m
14'			14.3	0.88, m

^*

signal overlapping