Table 2. ¹H (600 MHz) and ¹³C NMR (150 MHz) data of 4–6 in CD₃OD (J in Hz).

NO.	4		5		6
	δC	δH	δC	δH	δC	δH
1	172.6 (C)		170.8 (C)		173.0 (C)
2					105.9 (C)
3	76.1 (CH)	4.96 m	73.0 (CH)	5.08 m	166.4 (C)
4	33.8 (CH2)	1.85 m;	33.4 (CH2)	1.93 m;	101.9 (CH)	6.15 d (2.4)
		1.76 m		1.66 m
5	21.6 (CH2)	1.66 m;	22.5 (CH2)	1.70 m;	164.1 (C)
		1.42 m		1.60 m
6	34.0 (CH2)	1.74 m;	31.4 (CH2)	2.15 m;	112.7 (CH)	6.19 d (2.4)
		1.69 m		1.99 m
7	70.8 (CH)	5.52 m	129.8 (CH)	5.49 dt (15.7, 6.3)	144.6 (C)
8	50.1 (CH2)	2.99 dd (13.4, 3.0);	133.4 (CH)	5.35 dt (15.7, 5.2)	24.6 (CH3)	2.45 s
		2.63 dd (13.4, 10.3)
9	207.3 (C)		74.9 (CH)	4.05 m
10	51.0 (CH2)	4.77 d (18.5);	43.6 (CH2)	3.11 d (18.8);
		3.77 d (18.5)		2.82 d (18.8)
11	139.6 (C)		140.8 (C)
12	114.1 (CH)	6.13 d (2.5)	111.1 (CH)	6.25 d (2.4)
13	163.9 (C)		161.2 (C)
14	103.1 (CH)	6.25 d (2.5)	102.3 (CH)	6.19 d (2.4)
15	166.4 (C)		NDa
16	106.9 (C)		115.1 (C)
17	21.2 (CH3)	1.32 d (6.1)	19.0 (CH3)	1.31 d (6.4)
1′	176.0 (C)				62.4 (CH2)	4.47 m
2′	68.1 (CH)	4.25 dd (13.8, 6.9)			34.4 (CH2)	2.24 m;
						2.06 m
3′	20.6 (CH3)	1.37 d (6.9)			68.9 (CH)	4.32 m
4′					176.1 (C)
5′					52.7 (CH3)	3.68 s

^aDesignate signal not detected.