Table 2.

¹³C NMR spectroscopic data for compounds 1–6 in acetone-d₆ (δ in ppm)

No	1 a	2 c	3 a	4 b	5 a	6 c
1	118.3, C	118.3, C	117.1, C	111.0, C	117.8, C	118.3, C
2	138.9, C	138.9, C	139.0, C	138.6, C	135.2, C	138.8, C
3	109.4, CH	109.3, CH	109.8, CH	110.1, CH	108.5, CH	109.3, CH
4	156.5, C	156.5, C	157.1, C	157.1, C	158.4, C	156.5, C
5	101.0, CH	101.0, CH	102.2, CH	102.0, CH	95.2, CH	101.0, CH
6	156.4, C	156.4, C	157.9, C	154.7, C	161.6, C	156.4, C
7	19.9, CH3	19.9, CH3	20.5, CH3	19.3, CH3	19.0, CH3	19.9, CH3
8	25.1, CH2	25.1, CH2	34.4, CH2	29.7, CH2	29.1, CH2	25.1, CH2
9	124.8, CH	124.8, CH	77.0, CH	68.4, CH	89.8, CH	124.4, CH
10	134.1, C	134.1, C	153.4, C	78.6, C	73.3, C	134.6, C
11	40.4, CH2	40.4, CH2	32.5, CH2	38.7, CH2	39.3, CH2	37.8, CH2
12	27.2, CH2	27.2, CH2	27.3, CH2	22.1, CH2	22.5, CH2	30.2, CH2
13	124.8, CH	124.8, CH	125.1, CH	125.4, CH	125.6, CH	77.8, CH
14	135.5, C	135.8, C	135.7, C	135.4, C	135.3, C	74.2, C
15	36.4, CH2	37.6, CH2	40.4, CH2	40.4, CH2	40.4, CH2	38.5, CH2
16	34.5, CH2	30.7, CH2	27.3, CH2	27.4, CH2	27.3, CH2	22.6, CH2
17	75.3, CH	78.5, CH	125.1, CH	125.1, CH	125.1, CH	126.2, CH
18	149.3, C	72.9, C	131.6, C	131.6, C	131.6, C	131.1, C
19	17.8, CH3	25.8, CH3	17.7, CH3	17.7, CH3	17.7, CH3	17.6, CH3
20	110.3, CH2	25.8, CH3	25.8, CH3	25.8, CH3	25.8, CH3	25.8, CH3
21	16.1, CH3	16.1, CH3	16.1, CH3	16.0, CH3	16.0, CH3	22.8, CH3
22	16.1, CH3	16.1, CH3	108.9, CH2	17.9, CH3	22.3, CH3	16.3, CH3

^aMeasured at 100 MHz

^bMeasured at 125 MHz

^cMeasured at 150 MHz