Table 2.

¹³C NMR spectral data of new compounds 1–3 (75 MHz for ¹³C).

No.	1a	2a	3a	3b
1	32.5	26.9	30.6	31.0
2	31.2	31.0	30.8	31.0
3	66.0	65.8	67.0	68.8
4	40.2	40.2	39.0	39.2
5	74.5	73.7	62.6	63.4
6	72.1	71.6	60.0	60.3
7	119.5	120.3	65.0	67.0
8	139.7	141.1	126.2	126.7
9	42.3	77.3	134.4	137.2
10	36.6	39.6	37.3	38.0
11	27.8	26.9	22.4	23.2
12	38.9	35.0	36.1	36.3
13	43.0	43.3	41.5	42.1
14	54.2	50.1	51.3	51.3
15	22.6	22.6	29.1	23.1
16	27.8	27.8	22.1	29.4
17	55.3	55.5	53.8	54.5
18	12.1	11.7	11.3	11.7
19	17.7	21.4	22.5	23.8
20	40.1	40.1	40.0	40.7
21	21.0	20.9	20.8	21.2
22	135.7	135.8	135.5	135.0
23	130.3	130.5	131.3	132.3
24	36.9	47.2	42.1	43.0
25	40.5	70.7	32.5	33.3
26	13.1	26.0	19.5	19.9
27	64.4	28.3	19.8	20.2
28	18.3	15.0	17.4	17.8

^a Measured in DMSO-d₆; ^b Measured in CDCl₃.