Table 1.

¹H and ¹³C NMR Data of 1 – 3 (400 and 100 MHz, CDCl₃, δ ppm).

position	1		2		3
	δH (J in Hz)	δC	δH (J in Hz)	δC	δH (J in Hz)	δC
2		160.6, C		160.9, C		160.6, C
3	6.02, s	108.5, CH	5.95, s	108.7, CH	5.93, s	110.0, CH
4		157.4, C		157.3, C		160.3, C
4α		101.1, C		100.9, C		103.6, C
5		158.1, C		157.9, C		163.9, C
6		114.5, C		114.9, C		107.2, C
7		166.5, C		166.9, C		160.1, C
8		104.0, C		104.1, C		105.1, C
8a		156.2, C		156.3, C		157.5, C
1′	4.70, t (6.4)	76.5, CH	4.67, t (6.7)	76.9, CH	2.95, t (7.6)	36.7, CH2
2′	1.93, m 1.66, m	34.4, CH2	1.94, m 1.67, m	34.1, CH2	1.60, m	29.4, CH2
3′	1.48, m 1.32, m	28.2, CH2	1.47, m 1.35, m	28.1, CH2	1.38, m	31.9, CH2
4′	1.32 m	22.4, CH2	1.35 m	22.1, CH2	1.34 m	22.6, CH2
5′	0.89, t (7.2)	13.9, CH3	0.89, t (7.1)	14.0, CH3	0.89, t (7.0)	14.1, CH3
1″	3.35, d (6.2)	22.2, CH2	3.34, t (6.9)	22.8, CH2		207.6, C
2″	5.19, t (6.2)	121.6, CH	5.17, t (6.9)	121.5, CH	3.00, d (6.7)	53.6, CH2
3″		133.0, C		133.0, C	2.26, m	25.1, CH2
4″	1.66, s	25.9, CH3	1.67, s	25.9, CH3	0.96, d (6.7)	22.9, CH3
5″	1.77, s	18.0, CH3	1.79, s	18.0, CH3	0.96, d (6.7)	22.9, CH3
1‴		210.3, C		205.1, C	3.55, d (6.9)	22.0, CH2
2‴	3.67, m	47.1, CH	2.97, dd (6.9, 15.6) 2.80, dd (6.9, 15.6)	53.8, CH2	5.19, t (6.9)	120.4, CH
3‴	1.17, d (6.6)	16.7, CH3	2.16, m	25.3, CH2		137.9, C
4‴	1.80, m 1.37, m	27.1, CH2	0.96, d (7.4)	22.4, CH3	1.78, s	26.0, CH3
5‴	0.91, t (7.4)	11.7, CH3	0.98, d (7.4)	22.7, CH3	1.85, s	18.2, CH3
OH-7	14.20, s		14.37, s
OH-5	11.60 br, s		11.57 br, s
OH					15.15 br, s