Table 2. ¹H and ¹³C NMR Spectroscopic Data for Compounds 4 and 5^a.

	4		5
no.	δH (mult)	δC	δH (mult)	δC
1	2.12 m	26.1	2.17 dt (9.1, 4.9)	28.5
2	1.08 m	14.4	1.19 m	15.4
	0.67 m		0.63 m
3	2.36 m	28.1	1.96 m	26.6
4		91.1		151.3
5		159.0		135.4
6		127.3		151.4
7		143.8		129.7
8		198.6		197.1
9	3.86 s	78.0	3.97 s	83.2
10		50.5		57.6
11		128.9		65.4
12		170.6		172.0
13	1.80 s	21.7	1.37 s	19.0
14	1.00 s	15.6	1.15 s	14.8
15	3.04 m	37.2	2.28 dd (17.9, 9.5)	29.2
			2.94 dd (18.0, 7.2)
1′	1.57 m	27.6	1.63 m	26.6
2′	0.88 m	10.4	0.64 m	10.4
	1.20 m		1.19 m
3′	1.78 m	23.1	1.64 m	29.7
4′		77.5		78.7
5′	2.69 m	56.1	1.57 dd (14.2, 2.8)	56.5
6′	2.60 m	24.5	2.52 dd (14.5, 7.2)	28.2
	2.57 m		1.72 d (14.3)
7′		125.6		59.1
8′		87.8		95.5
9′	1.78 m	54.3	2.63 dd (9.5, 7.2)	52.1
10′		45.3		43.1
11′		166.5		146.1
12′		172.4		168.4
13′	5.09 d (13.5)	8.5	5.50 brs	122.9
	4.77 d (13.5)		6.18 brs
14′	0.96 s	27.7	0.93 s	24.0
15′	4.04 d (12.0)	69.4	4.30 d (11.1)	70.4
	4.01 d (12.0)		4.07 d (11.1)
1″		171.6		166.0
2″	5.90 m	111.7	5.90 m	114.4
3″		161.1		154.1
4″	4.18 d (15.0)	67.4	4.60 m	67.3
	4.14 d (15.0)
5″	2.10 s	16.0	2.12 s	16.0
6″		170.1		171.7
7″	2.72 m	29.2	2.68 m	28.9
8″	2.61 m	28.8	2.73 m	29.0
9″		173.1		172.8
6″-OEt	4.11 q (7.5)	61.5
	1.25 t (7.5)	29.7
12-OMe	3.78 s	53.3	3.43 s	52.1
9″-OMe			3.69 s	52.1

^aData (¹H 500 MHz, ¹³C 125 MHz) in CDCl₃. δ: ppm, J in Hz.