. 2022 Jul 16;15:100390. doi: 10.1016/j.fochx.2022.100390

Table 1.

¹H NMR and ¹³C NMR Spectral Data of Compound 1 to 3 (¹H 400 MHz, ¹³C 100 MHz, TMS, δ ppm).

	5-HMF (1)			β-sitosterol (2)			β-sitosterol-3-O-glucose glycosides (3)
Solvent	CDCl₃			CDCl₃			DMSO‑d₆
Position	¹³C	¹H	Multiplicity; J (Hz)	¹³C	¹H	Multiplicity; J (Hz)	¹³C	¹H	Multiplicity; J (Hz)
1	57.8	4.73	s	37.3	—		37.3	—
2	160.6	—		31.6	—		29.8	—
3	110.1	6.53	d; 3.2	71.8	3.55	m	77.4	—
4	122.7	7.23	d; 3.2	42.4	—		overlapped	—
5	152.6	—		140.9	—		140.9	—
6	177.8	9.61	s	121.7	5.38	d; 5.0	121.7	5.27	d; 4.0
	—	3.71	s
7				31.6	—		31.9	—
8				31.6	—		31.9	—
9				50.1	—		50.1	—
10				36.5	—		36.7	—
11				21.1	—		21.1	—
12				39.8	—		39.8	—
13				42.3	—		42.3	—
14				56.7	—		56.6	—
15				24.3	—		24.3	—
16				28.3	—		28.2	—
17				56.1	—		55.9	—
18				11.9	0.71	s	12.1	0.67	s
19				19.4	1.03	s	19.5	0.97	s
20				36.1	—		36.0	—
21				18.8	0.95	d; 6.5	19.1	0.89	d; 5.6
22				33.0	—		34.0	—
23				26.2	—		26.2	—
24				45.8	—		45.9	—
25				29.2	—		29.3	—
26				19.8	0.84	d; 7.0	19.6	0.80	m
27				19.0	0.86	d; 7.0	19.4	0.81	m
28				23.1	—		23.1	—
29				12.0	0.87	t; 7.4	12.2	0.83	m
Hexose
1′							101.2	4.16	d; 4.0
2′							73.9	2.95	m
3′							77.1	3.06	m
4′							70.6	3.00	m
5′							77.3	2.97	m
6′							61.6	3.40, 3.57	m,m