Table 2.

¹³C NMR data for compounds 1–6 in CDCl₃ at 100 MHz

Carbons	1	2	3	4	5	6
1	19.5	19.4	19.4	24.6	30.7	36.5
2	28.2	28.0	28.1	74.3	69.4	199.9
3	39.4	39.3	39.3	120.6	125.1	125.8
4	34.8	34.8	34.8	149.2	146.5	171.4
5	141.3	141.7	142.2	39.3	39.2	40.2
6	25.1	25.0	25.0	36.8	37.1	36.2
7	27.5	27.4	27.4	27.1	27.0	26.7
8	33.6	33.4	33.5	36.8	36.9	36.7
9	54.9	54.6	54.6	49.5	49.4	49.8
10	125.2	125.3	125.1	42.5	46.1	46.1
11	31.0	28.7	28.4 (28.5)	33.7	33.7	33.4
12	18.8	19.5	19.5	17.2	17.4	17.8
13	125.7	134.5	138.9	124.8	124.3	123.9
14	111.0	143.9	141.5	110.9	110.8	110.7
15	142.7	70.2	102.5	142.8	142.9	142.9
16	138.5	174.3	171.3	138.5	138.6	138.7
17	17.4	17.4	17.4	16.5	16.6	16.3
18	26.6	26.6	26.6	18.1	17.9	19.2
19	29.0	28.9	28.9	16.0	17.4	16.0
20	181.5	180.4	180.0	182.6	181.8	181.3
2-OMe				56.3
15-OMe			56.9 (57.0)