¹H and ¹³C NMR data of 1 (CDCl₃).

Position	δ C, type	δ H, mult. (J in Hz)
1	86.2, C
2	160.3, C
3	128.7, C
4	171.9, C
4a	143.7, C
6	164.4, C
6a	100.9, C
7	164.7, C
8	101.7, CH	6.62, d (2.4)
9	166.6, C
10	104.7, CH	7.20, d (2.4)
10a	134.2, C
10b	121.7, C
1-CH3	26.2, CH3	1.86, s
3-OCH3	60.9, CH3	3.83, s
7-OH		11.41, s
9-OCH3	55.9, CH3	3.91, s
1′	97.3, CH	5.65, t (5.6)
2′	30.7, CH2	2.23, m
		1.81, m
3′	25.4, CH2	2.11, m
4′	48.8, CH2	3.61, m