Table 2.

¹³C NMR spectroscopic data for 1 and 2

No.	1 a	2 b	2 c
1	16.6, CH2	16.4, CH2	16.3, CH2
2	24.3, CH2	24.0, CH2	24.1, CH2
3	142.7, CH	142.8, CH	143.1, CH
4	134.4, C	133.8, C	133.9, C
5	39.5, C	39.1, C	39.1, C
6	82.8, CH	83.9, CH	82.6, CH
7	29.6, CH2	29.4, CH2	29.2, CH2
8	46.8, CH	47.7/47.4, CH	47.1/46.8, CH
9	39.8, C	39.4, C	39.4, C
10	45.8, CH	44.5/45.0, CH	45.0/45.6, CH
11	47.7, CH2	44.1/44.6, CH2	44.9/44.1, CH2
12	69.5, CH	64.6, CH	64.1/63.5, CH
13	128.6, C	173.5/171.0, C	175.8/173.6, C
14	110.5, CH	116.8/117.9, CH	115.9/116.7, CH
15	143.7, CH	171.0, C	171.1, C
16	140.8, CH	97.2/98.1, CH	98.7/98.0, CH
17	178.3, C	179.7, C	177.7, C
18	166.9, C	166.6, C	166.8, C
19	27.2, CH3	27.0, CH3	27.3, CH3
20	21.6, CH3	20.7/21.5, CH3	21.0/21.9, CH3
OMe	51.6, CH3	51.8, CH3	52.1, CH3
CH3CO
CH3 CO
1′	101.7, CH
2′	75.6, CH
3′	78.6, CH
4′	72.2, CH
5′	78.2, CH
6′	63.1, CH2

^aMeasured in pyridine-d ₅ (δ _C 149.9 ppm)

^bMeasured in CDCl₃ (δ _C 77.0 ppm)

^cMeasured in DMSO-d ₆ (δ _C 39.5 ppm)