¹³C NMR data of 1–4 (125 MHz, δ in ppm).

	1	2	3	4
1	43.9	44.2	43.9	43.9
2	24.5	24.5	24.9	24.0
3	29.0	28.9	29.5	28.6
4	66.9	67.1	68.9	66.3
5	30.1	30.9	30.1	30.0
6	44.7	51.6	55.7	49.5
7	35.3	36.4	44.0	36.1
8	141.2	152.9	177.9	152.0
9	127.8	130.8	139.2	139.6
10	106.4	105.9	104.8	111.4
11	118.8	117.5	117.1	115.4
12	129.9	130.5	130.7	133.0
13	75.6	75.8	76.3	76.2
14	138.3	150.2	152.8	153.9
15	143.9	113.6	108.8	116.4
16	102.8	121.3	125.6	123.7
17	120.0	115.4	121.4	128.9
18	109.1	105.4	67.9	77.5
19	59.8	183.9	83.2	75.6
20	62.8	67.4	65.1	61.8
21	168.4	167.0	169.3	168.0
22	172.8	172.3	173.4	171.7
23	28.5	26.4	19.4	22.4
24	22.3	19.2	22.6	13.0
25	27.4	27.3	28.0	27.4
26	27.4	27.5	28.2	27.4
OMe	56.9		60.1	59.5