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 3 The 1 H NMR (400 MHz) and 13 C NMR (100 MHz) data of compounds 5, 6, and 18 in CDCl 3 (δ in ppm).

Position	5		18		6
	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	α 1.45, m:	42.4,	α 1.42, m:	42.1,	0.62, m	15.9,
	β 1.28, m	CH2	β 1.29, m	CH2		CH
2	β 1.60, m,	26.8,	β 1.66, m,	26.2,	β 2.34,	20.9,
	α 1.32, m	CH2	α 1.52, m	CH2	m,	CH2
					α 1.90,
					br.
					d (19.2)
3	2.45, m	48.1, C	2.44, m	49.8, C	5.22, br.	119.6,
					s	CH
4	1.91, m	50.7,	1.86, m	50.3,		131.5,
		CH		CH		C
5	β 2.76,	27.0,	β 2.54,	27.6,	β 2.17,	25.0
	ddd (16.3,	CH2	ddd (16.2,	CH2	dd,	CH2
	8.1, 1.3),		8.2, 1.4),		(18.8,
	α 2.13, m		α 2.06, m		7.4),
					α 1.76,
					br.
					d (18.8)
6	5.51,	125.4,	5.45,	124.7,	0.76, m	18.2,
	d (8.1)	CH	d (7.9)	CH		CH
7		137.4,		137.5,		20.7, C
		C		C
8	α 2.26, m,	30.4,	α 2.20, t	30.4,	a 1.47,	39.6,
	β 1.86, m	CH2	(14.8),	CH2	m,	CH2
			β 1.89, m		b 1.16, m
9	α 1.65, m,	41.3,	α 1.66, m,	41.3,	a 1.52,	28.9,
	β 1.23, m	CH2	β 1.26, m	CH2	m,	CH2
					b 1.31, m
10		44.6, C		44.6, C	3.29,	78.9,
					d (10.1)	CH
11		76.2, C		76.0, C		73.4, C
12	1.20, s	21.0,	1.24, s	24.9,	1.20, s	26.7,
		CH3		CH3		CH3
13	a 3.40,	70.9,	a 3.60,	68.8,	1.15, s	23.3,
	d (10.8),	CH2	d (10.7),	CH2		CH3
	b 3.27,		b 3.47,
	d (10.8)		d (10.7)
14	1.69, s	28.5,	1.68, s	28.5,	0.72, s	10.4,
		CH3		CH3		CH3
15	0.87, s	17.9,	0.83, s	17.5,	1.58, s	23.7,
		CH3		CH3		CH3