Table 2.

¹H NMR and ¹³C NMR data for compounds 5 and 6.

	5a		6b
Position	δC	δH (J Hz)	δC	δH (J Hz)
1	172.2		173.3
2	54.8	4.87, dd (6.5,11.5)	56.3	4.76, dd (6.0,9.0)
3a	36.9	3.12, dd (6.5,14.0)	37.9	3.13, dd (9.0,14.0)
3b		3.19, dd (6.5,14.0)		3.27, dd (6.0,9.0)
4	127.4		138.6
5	130.5	7.04, d (8.5)	130.5	7.26, m
6	116.0	6.76, d (8.5)	129.5	7.24, m
7	155.5		127.9	7.22, m
8	116.0	6.76, d (8.5)	129.5	7.24, m
9	130.5	7.04, d (8.5)	130.5	7.26, m
10	167.7		170.3
11	134.2		125.7
12	127.3	7.68, d (7.5)	130.2	7.60, d (8.5)
13	128.8	7.30, t (7.5)	116.1	6.76, d (8.5)
14	131.6	7.42, t (7.5)	162.3
15	128.8	7.30, t (7.5)	116.1	6.76, d (8.5)
16	127.3	7.68, d (7.5)	130.2	7.60, d (8.5)
1′a	65.5	4.03, dd (3.5,11.5)	66.7	4.11, dd (6.0,11.0)
1′b		4.50, dd (4.5,11.0)		4.41, dd (4.5,11.0)
2′	50.5	4.60, m	51.9	4.56, m
3′a	37.4	2.90, dd (7.0,14.0)	37.4	2.88, dd (8.5,14.0)
3′b		3.00, dd (6.5,14.0)		2.93, dd (6.0,14.0)
4′	137.2		139.1
5′	129.4	7.22, d (8.0)	130.3	7.25, m
6′	128.9	7.30, t (7.5)	129.4	7.23, m
7′	127.0	7.30, t (7.5)	127.6	7.20, m
8′	128.9	7.24, t (7.5)	129.4	7.23, m
9′	129.4	7.22, d (8.0)	130.3	7.25, m
10′	167.6		170.1
11′	133.4		135.7
12′	127.2	7.65, d (7.5)	128.4	7.67, d (7.5)
13′	128.6	7.38, t (7.5)	127.2	7.37, d (7.5)
14′	132.2	7.50, t (7.5)	132.6	7.49, t (7.5)
15′	128.6	7.38, t (7.5)	127.2	7.37, d (7.5)
16′	127.2	7.65, d (7.5)	128.4	7.67, d (7.5)

^aRecorded in DMSO-d_6.^brecorded in MeOD.