Table 1.

NMR Spectra of Compounds 1 – 5 in CD₃OD (J in Hz).^a

position	1		2		3		4		5
	δH	δC, type	δH	δC, type	δH	δC, type	δH	δC, type	δH	δC, type
2		76.2, C		76.2, C		76.2, C		76.2, C		76.4, C
3	1.90, dt (13.6, 6.9) 1.79, dt (13.6, 6.9)	33.1, CH2	1.90, dt (13.6, 6.8) 1.79, dt (13.6, 6.8)	33.1, CH2	1.90c, m 1.79, dt (13.6, 6.9)	33.2, CH2	1.91, dt (13.8, 6.9) 1.79, dt (13.8, 6.9)	33.2, CH2	1.92, dt (13.6, 6.7) 1.81, dt (13.6, 6.7)	33.0, CH2
4	2.71, t (6.9)	23.3, CH2	2.71, t (6.8)	23.3, CH2	2.7, t (6.9)	23.3, CH2	2.71, t (6.9)	23.3, CH2	2.76, t (6.7)	23.4, CH2
4a		122.0, C		122.0, C		122.0, C		122.0, C		121.9, C
5	6.35, d (2.9)	113.7, CH	6.35, d (2.9)	113.7, CH	6.34, d (2.9)	113.7, CH	6.34, d (2.9)	113.7, CH	6.47, d (2.9)	112.1, CH
6		150.8, C		150.8, C		150.8, C		150.8, C		154.1, C
7	6.43, d (2.9)	116.8, CH	6.43, d (2.9)	116.8, CH	6.43, d (2.9)	116.8, CH	6.43, d (2.9)	116.8, CH	6.55, d (2.9)	116.1, CH
8		127.8, C		127.9, C		127.9, C		127.89, C		128.0, C
8a		145.7, C		145.8, C		145.7, C		145.7, C		146.6, C
1′	2.82, d (13.1)	53.7, CH2	2.81, d (13.1)	53.7, CH2	2.81, d (13.0)	53.8, CH2	2.81, d (13.1)	53.8, CH2	2.82, d (13.3)	53.7, CH2
	2.55, d (13.1)		2.56, d (13.1)		2.52, d (13.0)		2.52, d (13.1)		2.57, d (13.3)
2′		201.7, C		201.7, C		201.0, C		201.1, C		201.5, C
3′	6.19, brs	126.2, CH	6.18, brs	126.3, CH	6.19, brs	126.7, CH	6.19, brs	126.8, CH	6.18, brs	126.2, CH
4′		159.5, C		159.4, C		160.4, C		160.3, C		159.6, C
5′	2.19b, m	41.9, CH2	2.18, m	42.4, CH2	2.62, m	34.6, CH2	2.59, m	35.1, CH2	2.19d, m	41.9, CH2
6′	2.20b, m	26.7, CH2	2.24, m	26.6, CH2	2.21, q (7.4)	27.4, CH2	2.22, q (7.8)	27.3, CH2	2.20d, m	26.7, CH2
7′	5.36, brt (6.7)	125.1, CH	5.22, brt (7.2)	127.2, CH	5.44, brt (7.4)	125.9, CH	5.31, t (7.5)	127.86, CH	5.35, m	125.1, CH
8′		137.0, C		136.9, C		136.7, C		136.6, C		137.0, C
9′	3.89, s	68.7, CH2	4.04, s	61.3, CH2	3.9, s	68.9, CH2	4.09, s	61.3, CH2	3.89, s	68.7, CH2
10′	1.63, d (1.4)	13.7, CH3	1.74, d (1.3)	21.5, CH3	1.66, d (1.4)	13.7, CH3	1.75, d (1.4)	21.5, CH3	1.63, d (1.3)	13.7, CH3
11′	2.12, d (1.2)	19.6, CH3	2.11, d (1.2)	19.6, CH3	1.88, d (1.4)	25.9, CH3	1.87, d (1.4)	25.8, CH3	2.12, d (1.4)	19.6, CH3
12′	1.34, s	25.3, CH3	1.33, s	25.3, CH3	1.33, s	25.2, CH3	1.33, s	25.1, CH3	1.35, s	25.3, CH3
13′	2.06, s	16.5, CH3	2.06, s	16.5, CH3	2.06, s	16.4, CH3	2.06, s	16.4, CH3	2.09, s	16.6, CH3
OCH3									3.70, s	55.9, CH3

^a1H NMR data obtained at 500 MHz; ¹³C NMR data acquired in CD₃OD at 125 MHz.

^b,dOverlapping signals. Chemical shifts determined from the HSQC spectrum.

^cObscured signal.