¹³C NMR spectroscopic data for compounds 2–7 (δ in ppm).

No.	2a	3a	4b	5b	6b	7b
1	34.1	25.5	24.1	24.5	24.1	46.3
2	24.2	32.8	34.8	35.2	34.9	70.9
3	37.5	217.6	217.5	217.5	217.8	38.7
4	73.7	80.4	80.2	80.2	80.3	35.5
5	79.1	78.1	78.1	78.1	78.0	106.5
6	73.5	80.0	79.8	79.9	79.9	68.1
7	45.4	41.6	40.1	40.2	40.2	49.4
8	83.4	70.5	76.0	76.2	76.2	77.3
9	211.3	78.5	75.1	75.3	75.3	79.6
10	44.0	30.0	30.7	30.9	30.9	71.9
11	137.3	132.7	132.6	133.0	133.1	139.0
12	171.3	169.6	169.2	169.2	169.3	169.9
13	125.1	123.9	124.6	124.6	124.6	119.4
14	20.4	20.0	19.8	19.8	20.2	23.2
15	24.2	23.3	23.1	23.1	23.5	12.0
1′	179.0	176.4	176.4	176.4	167.1
2′	35.0	34.0	33.9	34.0	127.4
3′	19.2	18.0	18.0	18.0	138.2
4′	19.2	17.9	17.9	17.9	19.2
5′					14.6
1′′	167.0	167.7	172.9	167.4	167.5	176.1
2′′	136.7	127.8	42.9	127.3	127.4	34.0
3′′	127.4	137.7	25.8	138.2	138.4	17.9
4′′	18.1	19.4	21.6	19.2	19.3	17.9
5′′		14.6	21.7	14.6	14.6

^aMeasured at 150 MHz in methanol-d₄.

^bMeasured at 125 MHz in methanol-d₄.