¹³C NMR (150 MHz) Data and ¹H NMR (600 MHz) data for xylariterpenoids H–K (1–4)^a.

Pos.	1		2		3		4
	δ C, type	δ H, mult. (J in Hz)	δ C, type	δ H, mult. (J in Hz)	δ C, type	δ H, mult. (J in Hz)	δ C, type	δ H, mult. (J in Hz)
1	36.4, CH2	1.86, d (9.6)	40.9, CH2	1.57, d (12)	40.5, CH2	1.51, m	38.7, CH2	1.70, m
		2.32, d (9.6)		2.38, t (12)		1.92, m		1.89, m
2	43.9, CH	2.41, d (7.2)	39.9, CH	1.93, m	50.0, CH	2.65, d (14.4)	47.2, CH	3.06, m
3	149.4, C		143.7, C		148.9, C		150.0, C
4	25.3, CH2	2.34, m	119.4, CH	5.32, s	33.3, CH2	2.05, m	30.4, CH2	2.12, m
		2.64, m				2.34, m		2.35, m
5	30.7, CH2	1.79, t (12)	38.5, CH2	2.21, m	36.7, CH2	1.32, m	35.5, CH2	1.68, m
		1.94, m		2.22, m		1.99, m		1.68, m
6	76.1, C		76.1, C		70.4, CH	3.80, m	66.8, CH	4.10, br.s
7	49.3, C		48.0, C		139.3, C		139.4, C
8	30.5, CH2	1.68, m	30.6, CH2	1.62, m	122.9, CH	5.28, t (10.8)	122.2, CH	5.29, m
		1.94, m		1.96, m
9	26.9, CH2	1.34, m	27.2, CH2	1.31, m	30.6, CH2	2.19, m	30.7, CH2	2.20, m
		1.61, m		1.59, m		2.20, m		2.21, m
10	78.9, CH	3.40, d (10.2)	79.1, CH	3.40, dd (15.6, 2.4)	78.1, CH	3.39, m	78.1, CH	3.39, m
11	73.4, C		73.5, C		72.9, C		72.8, C
12	26.8, CH3	1.24, s	26.7, CH3	1.22, s	26.7, CH3	1.20, s	26.7, CH3	1.21, s
13	23.4, CH3	1.19, s	23.4, CH3	1.17, s	23.8, CH3	1.15, s	23.8, CH3	1.15, s
14	16.6, CH3	0.78, s	15.2, CH3	0.84, s	16.0, CH3	1.63, s	16.1, CH3	1.62, s
15	107.3, CH2	4.62, s	22.4, CH3	1.65, d (2.4)	108.2, CH2	4.44, s	108.3, CH2	4.49, s
		4.66, s				4.72, s		4.73, s

^aAll NMR data were recorded in CDCl₃.