Table 1.

¹³C and ¹H NMR data of aglycone moieties for compounds 1–3 in CD₃OD.

Numbers	Compounds [δH mult. (J in Hz)]
	1 a		2 a		3 a
1	38.5	1.88 o, 1.10 br s	38.5	1.86 o,1.10 br s	38.5	1.89 m, 1.09 br s
2	30.8	1.94 o, 1.29 o	30.7	1.94 o,1.29 o	30.7	1.92 m,1.29 o
3	79.6	3.58 m	79.7	3.54 m	79.2	3.59 m
4	39.6	2.44 m, 2.31 t	39.6	2.43 m, 2.30 t	39.5	2.45 m, 2.30 m
5	141.9	–	141.9	-	141.9	–
6	122.7	5.38 br s	122.7	5.38 br s	122.4	5.39 br s
7	33.2	2.01 m, 1.56 m	33.2	2.00 m, 1.56 m	33.0	2.04 m, 1.60 m
8	32.8	1.65 m	32.8	1.65 m	32.8	1.65 m
9	51.7	0.97 m	51.7	0.97 m	51.6	1.05 m
10	38.0	–	38.0	-	38.0	–
11	22.0	1.56 m, 1.51 br s	22.0	1.56 m, 1.50 br s	21.5	1.64 m, 1.54 m
12	40.9	1.76 o, 1.19 br s	40.9	1.76 m, 1.19 m	39.1	1.92 m, 1.36 br s
13	41.4	–	41.4	-	44.9	–
14	57.8	1.14 m	57.8	1.14 m	55.9	1.28 o
15	32.7	1.97 m, 1.28 o	32.7	1.98 m, 1.28 o	34.1	2.34 m, 1.54 m
16	82.2	4.39 q (7.4)	82.2	4.39 q (7.4)	83.7	4.91 m
17	63.7	1.74 br s	63.7	1.74 br s	56.3	2.93 dt (8.0, 1.8)
18	16.8	0.80 s	16.8	0.81 s	14.7	0.68 s
19	19.9	1.05 s	19.8	1.04 s	19.8	1.05 s
20	42.9	1.90 m	42.9	1.90 m	138.5	–
21	14.9	0.96 d (7.0)	14.9	0.96 d (7.0)	123.0	5.66 br s, 6.21 br s
22	110.6	–	110.6	-	173.5	–
23	32.4	1.70 d (4.6)	32.4	1.70 d (4.6)
24	29.9	1.62 m, 1.41 m	29.9	1.62 m, 1.41 m
25	31.4	1.59 o	31.5	1.59 m
26	67.9	3.44 m, 3.32 o	67.9	3.44 m, 3.31 m
27	17.5	0.79 d (6.5)	17.5	0.79 d (6.5)

^a Tested in ¹³C-NMR (200 Hz) and ¹H-NMR (800 Hz). o indicates overlapped.