Table 2. ¹H-NMR (500 MHz) and ¹³C-NMR (125 MHz), in MeOD-d₄, of Deoxyrhapontigenin-3-O-β-d-glucuronide (5).

	1H-NMR (δ ppm, J Hz)		13C-NMR (δ ppm)
atom #	(500 MHz)	lit.a	(125 MHz)	lit.a
1			141.2	141.1
2	6.78, br. t	6.78, br.t	107.5	107.2
3			160.5	159.2
4	6.50, t, J = 2.1	6.45, t, J = 1.9	104.4	104.1
5			159.9	159.8
6	6.64, br. t	6.65, br.t	108.4	108.7
7	6.92, d, J = 16.3	6.89, d, J = 16.5	127.4	127.4
8	7.02, d, J = 16.3	7.04, d, J = 16.5	129.6	129.6
1′			131.4	b
2′	7.45, d, J = 8.8	7.45, d, J = 8.5	128.8	130.8
3′	6.91, d, J = 8.9	6.89, d, J = 8.5	115.1	128.4
4′			160.9	114.9
5′	6.91, d, J = 8.9	6.89, d, J = 8.5	115.1	160.5
6′	7.45, d, J = 8.8	7.45, d, J = 8.5	128.8	114.9
OCH3	3.80, s	3.80, s	55.7	128.4
1″	4.92c	4.96, d, J = 7.2	102.6	55.6
2″	3.53–3.47, m	3.50, m	74.7d	102.5
3″	3.53–3.47, m	3.51, t, d, J = 9.1	77.7d	76.9
4″	3.57, m	3.79, m	73.4	74.4
5″	3.83, d, J = 9.6	4.00, d, d, J = 9.5	76.6	72.5
6″			167.4	76.5
OH	8.31, s

^aRef (52).

^bThe ¹³C-NMR for H1′ was not furnished by the authors, potentially leading to misplaced assignments.

^cThe signal for the anomeric hydrogen (H1″) was partially superimposed on the solvent signal.

^dThese signals may be inverted due to the uncertainty of assignment.