¹³C NMR spectroscopic data of compounds 1–6 (100 MHz, CDCl₃, δ in ppm).

Position	1	2	3	4	5	6
1	195.6	193.2	192.6	193.8	—	110.1
2	110.3	113.3	112.7	110.7	171.3	161.2
3	197.9	196.5	195.8	196.3	108.4	108.4
4	31.3	42.0	41.4	38.4	183.6	135.6
5	26.9	63.9	63.3	67.0	160.8	108.4
6	71.3	47.7	47.0	74.7	111.1	161.2
7	—	—	—	—	135.0	—
8	—	—	—	—	106.9	—
9	—	—	—	—	156.8	—
10	—	—	—	—	110.6	—
1′	206.1	206.1	205.4	205.4	34.4	208.0
2′	40.3	40.8	40.1	40.2	26.8	44.8
3′	24.6	25.1	31.6–29.2	25.1	29.8–29.0	24.4
4′–8′	29.8–29.3	30.2–29.8	31.6–29.2	30.2–29.8	29.8–29.0	29.8–29.3
9′	29.8–29.3	30.2–29.8	31.6–29.2	30.2–29.8	27.2	29.8–29.3
10′	29.8–29.3	30.2–29.8	31.6–29.2	30.2–29.8	129.9	29.8–29.3
11′	29.8–29.3	30.2–29.8	35.5	30.2–29.8	129.9	29.8–29.3
12′	27.2	27.7	136.7	27.7	27.2	27.2
13′	129.9	130.4	108.7	130.4	32.0	129.9
14′	129.9	130.4	147.2	130.4	22.4	129.9
15′	27.2	27.4	145.2	27.4	14.1	26.9
16′	32.0	32.4	107.8	32.4	—	32.0
17′	22.4	22.8	120.8	22.8	—	22.4
18′	14.0	14.5	—	14.5	—	14.0
OCH2O	—	—	100.5	—	—	—