Diversity of sesquiterpenoids from Stellera chamaejasme with neuroprotective effects Author Yuan, Fang-Yu , Zhuo-Ya Tang &, Xue-Long Yan, Dong Huang, Han-Zhuang Weng, Author Tang, Zhuo-Ya Author Yan, Xue-Long Author Huang, Dong Author Weng, Han-Zhuang Author Huang, Jia-Luo Author Fan, Run-Zhu Author Chen, Ye Author Yin, Sheng Author Tang, Gui-Hua text Phytochemistry 2023 113588 2023-04-30 208 1 10 http://dx.doi.org/10.1016/j.phytochem.2023.113588 journal article 10.1016/j.phytochem.2023.113588 1873-3700 8194549

Table 2 The 1 H NMR and 13 C NMR data of compounds 3 and 4 (δ in ppm).

Position	3 (in CDCl) a 3		3 (in DMSO‑ d) b 6	4 (in CDCl) a 3
a Recorded in 400 Hz for 1 H NMR and 100 Hz for 13 C NMR. b Recorded in 500 Hz for 1 H NMR and 125 Hz for 13 C NMR.
	δ H, multi.	δ C,	δ H, multi. δ C,	δ H, multi.	δ C,
	(J in Hz)	type	(J in Hz) type	(J in Hz)	type
1		147.9,	148.6,		139.8,
		C	C		C
2	5.95, br. s	130.6,	5.90, br. s 129.1,		206.8,
		CH	CH		C
3	β 2.53, m,	39.7,	β 2.44, m, 39.2,	α 2.40, m,	47.5,
	α 2.00, m	CH2	α 1.91, m CH2	β 2.02, m	CH2
4	2.49, m	36.2,	2.39, m 35.5,	2.35, m	31.3,
		CH	CH		CH
5	3.05, m	42.7,	3.00, m 42.1,	3.22, m	39.0,
		CH	CH		CH
6	α 1.74, dd	34.0,	α 1.74, dd 32.7,	α 1.85,	35.8,
	(13.3,	CH2	(13.3, CH2	d (13.6),	CH2
	2.3),		2.1),	β 1.41, t
	β 1.90, t		β 1.65, t	(13.6)
	(13.3)		(13.3)
7		79.7, C	78.3, C		81.3, C
8		116.0,	116.1,		103.2,
		C	C		C
9	α 3.26,	46.1,	α 3.24, 45.5,	α 2.76,	38.0,
	d (12.7),	CH2	d (12.7), CH2	d (14.8):	CH2
	β 2.69,		β 2.54,	β 2.56,
	d (12.7)		d (12.7)	d (14.8)
10		84.9, C	84.4, C		145.9,
					C
11	2.71, m	44.5,	2.65, q 44.0,		153.2,
		CH	(7.0) CH		C
12		176.3,	176.7,	a 5.19, s	103.9,
		C	C	b 4.90, s	CH2
13	1.20,	6.9,	1.01, 7.1,	β 4.39,	67.9,
	d (7.2)	CH3	d (7.0) CH3	d (13.2),	CH2
				α 4.31,
				d (13.2)
14	1.58, s	21.3,	1.49, s 20.8,	2.28, s	21.8,
		CH3	CH3		CH3
15	0.97,	16.3,	0.89, 16.1,	1.04,	16.2,
	d (6.8)	CH3	d (6.8) CH3	d (5.9)	CH3
OMe				3.27, s	48.4,
					CH3
OH			5.82, s	2.97, s