Table 2.

¹³C-NMR data for compounds 1–3.

C#	1, a δC, type	2, b δC, type	3, a δC, type
1	37.2, CH2	33.2, CH2	34.9, CH2
2	24.3, CH2	22.2, CH2	21.1, CH2
3	71.8, CH	67.9, CH	67.3, CH
4	42.3, CH2	31.6, CH2	28.2, CH2
5	140.8, C	75.5, C	30.7, CH
6	121.6, CH	77.8, CH	76.1, CH
7	31.7, CH2	32.5, CH2	31.4, CH2
8	31.9, CH	32.2, CH	31.9, CH
9	50.1, CH	46.2, CH	45.2, CH
10	36.5, C	39.6, C	38.5, C
11	21.1, CH2	29.1, CH2	40.5, CH2
12	39.7, CH2	41.0, CH2	73.7, CH
13	42.5, C	43.9, C	42.7, C
14	56.6, CH	57.3, CH	55.8, CH
15	21.0, CH2	25.2, CH2	24.1, CH2
16	28.5, CH2	29.3, CH2	29.7, CH2
17	57.3, CH	57.4, CH	55.9, CH
18	11.8, CH3	12.6, CH3	12.2, CH3
19	19.4, CH3	17.1, CH3	16.5, CH3
20	35.0, CH	37.8, CH	36.3, CH
21	23.2, CH3	15.3, CH3	19.0, CH3
22	44.2, CH2	36.3, CH2	39.9, CH2
23	75.8, CH	29.1, CH2	30.6, CH2
24	48.9, CH	46.4, CH	45.4, CH
25	75.2, C	74.2, C	75.3, C
26	30.7, CH3	26.0, CH3	26.2, CH3
27	30.7, CH3	27.2, CH3	27.2, CH3
28	14.1, CH3	19.6, CH3	14.8, CH3
CH3CO	–	21.4, CH3	21.4, CH3
CH3 CO	–	172.1, C	164.5, C

^a Spectra were measured in CDCl₃ (150 MHz); ^b Spectra were measured in CD₃OD (150 MHz).