Chemical Constituents of Root Barks of Gnidia involucrata and Evaluation for Antibacterial and Antioxidant Activities

Table 1

¹H- and ¹³C-NMR (CDCl₃) spectral data of compound 1 and data of closely related compounds in the literature [20].

No.	^1H-NMR data of compound 1	^1H-NMR spectral data reported in the literature [25]	^13C-NMR data of compound 1	^13C-NMR spectral data reported in the literature [25]
1	—		127.4	127.6
2	7.13 (1H, br.s)	7.16 (1H, d, J = 1.8)	114.4	115.2
3	—	—	145.0	146.2
4	—	—	146.5	148.6
5	6.88 (1H, d, J = 8.0 Hz)	6.87 (1H, d, J = 8.0)	115.4	116.3
6	7.04 (1H, dd, J = 1.8 and 8.0 Hz)	7.04 (1H, dd, J = 8.0 and 1.8)	122.3	122.4
7	7.57 (1H, d, J = 15.6)	7.53 (1H, d, J = 15.9)	143.9	145.5
8	6.25 (1H, d, J = 15.6)	6.28 (1H, d, J = 15.9)	115.5	115.8
9	—		168.0	167.4
1′	4.19 (2H, t)	4.14 (2H, t, J = 6.7)	64.9	64.6
2′	1.73 (2H, m)	1.68 (m)	31.9	32.6
3′	1.73 (2H, m)		29.7	NR
4′–24′	1.27–0.88 (42H)		29.7–22.6	NR
25′	0.88 (3H, t)		14.1	14.3

NR: not reported.