The NMR data of compounds 1–2.

No.	Compound 1		Compound 2
	δ H a J (Hz)	δ C b	δ H a J (Hz)	δ C b
1	5.33 d, 3.2		6.29 s
2	3.51 d, 4.2	68.9	4.01 br. s	63.4
3	3.34 m	53.8	3.68 br. s	70.9
4
5	3.22 m	61.0	3.72 d, 3.5	74.7
6	2.40 dd, 10.9, 4.8	36.0	2.31 d, 11.9	31.2
	1.47 d, 10.9		2.24 m
7		57.7		57.0
8		131.9		129.7
9	6.75 d, 7.6	119.6	6.66 d, 7.7	118.9
10	6.56 t, 7.6	118.2	6.53 t, 7.7	118.6
11	6.84 d, 7.6	114.3	6.77 d, 7.7	112.7
12		143.0		143.4
13		141.7		141.2
14	2.46 dd, 13.8, 4.9	22.1	2.56 dd, 13.2, 4.1	21.8
	1.36 dd, 13.8, 9.9		1.89 t, 11.8
15	3.35 m	30.0	3.49 d, 4.1	29.0
16		59.9		60.5
17	4.08 d, 6.6	73.2	3.93 s	72.7
18	1.52 d, 6.6, 3H	12.5	1.57 d, 6.2, 3H	12.3
19	5.14 q, 6.6	114.2	5.33 q, 6.2	117.8
20		139.0		131.3
21	3.28 m	54.8	4.22 d, 15.0	69.7
	3.25 m		3.65 m
22		172.7		170.7
1′	4.67 d, 7.3	101.7	4.73 d, 7.3	100.6
2′	3.23 m	73.4	3.23 m	73.4
3′	3.29 m	77.1	3.32 m	76.8
4′	3.14 m	69.9	3.15 m	70.0
5′	3.26 m	76.0	3.30 m	76.0
6′	3.72 m	60.9	3.71 m	60.9
	3.46 m		3.45 m
–OCH3	3.53 s, 3H	50.9	3.60 s, 3H	51.7

^aRecorded at 500 MHz in DMSO-d₆.

^bRecorded at 125 MHz in DMSO-d₆.