Table 1. NMR Spectroscopic Data (¹H at 800 MHz, ¹³C at 200 MHz, CDCl₃) of Gracidiol (1).

position	δC, type	δH	J (Hz)	HMBC, H→C
1	66.3, H2C–O	4.69	dd (11.8, 2.8)	C-7″
		4.47	dd (11.8, 7.8)	C-2, C-3, C-7″
2	73.6, HC–O	3.96	dd (7.8, 2.8)	C-1, C-3, C-4, CH3-3
OH-2/3		3.49	s
3	73.4, C–O
CH3-3	20.0, CH3	1.34	s	C-2, C-4
4	68.9, H2C–O	4.48	d (11.5)	C-2, C-3, CH3-3, C-9′
		4.20	d (11.5)	C-2, C-3, CH3-3, C-9′
1′	134.2, C
2′/6′	128.4, CH	7.54	m	C-3′/5′, C-4′, C-7′
3′/5′	129.1/130.8, CH	7.39–7.40a	m	C-1′, C-2′/6′
4′	130.8/129.1, CH	7.39–7.40a	m	C-2′/6′
7′	146.4, CH	7.75	d (16.0)	C-1′, C-2′/6′, C-8′, C-9′
8′	117.2, CH	6.47	d (16.0)	C-1′, C-7′, C-9′
9′	167.6, C=O
1″	134.2, C
2″/6″	129.9, CH	8.05	m	C-4″, C-7″
3″/5″	128.6, CH	7.45	m	C-2″/6″, C-4″
4″	133.4, CH	7.56	m	C-2″/6″
7″	167.3, C=O

^aOverlapping signals.