Table 3.

¹H- and ¹³C-NMR, HMBC data of compounds 4-5 in acetone-d_6.

	4				5
	δH	δC	HMBC		δH	δC	HMBC
1		148.0				164.4
2		139.6			6.20 br s	98.4	C-3, 9a, 4
3	7.34 s	122.4	C-2, 4a, 1′			165.5
4		126.1			6.40 br s	94.3
4a		147.4				158.3
5		129.6				132.1
10a		146.6				145.3
6		154.0				150.4
7		126.1				126.5
8	7.79 s	112.8	C-9		7.51 s	116.1	C-9, 6, 10a, 1′
8a		115.2				113.4
9		183.0				180.7
9a		109.0				102.8
1′		40.5			3.43 d (6.6)	29.1	C-7, 2′, 3′
2′	6.36dd (17.7,10.8)	147.8			5.41 t (6.6)	122.4	C-7, 1′, 4′, 5′
3′	5.16 d (17.7)	110.9	C-1′			136.8
	5.02 d (10.8)
4′	1.65 s	27.3	C-2′, 3′, 4		1.74 s	15.9	C-2′, 3′, 5′
5′	1.65 s	27.2	C-2′, 3′, 4		2.08 m	40.2	C-2′, 3′, 2′′
1′′	5.53 d (3.9)	72.4			2.12 m	28.3	C-2′′, 3′′
2′′	4.49 d (3.9)	99.8			5.13 t (6.0)	124.7	C-5′, 1′′, 4′′, 5′′
3′′		70.9				131.5
4′′	1.32 s	25.2	C-2′′, 3′′		1.63 s	25.5	C-2′′, 3′′, 5′′
5′′	1.30 s	25.5	C-2′′, 3′′		1.58 s	17.4	C-2′′, 3′′, 5′′
1-OH	13.0 s		C-2		13.22 s