Table 1.

¹H (400 MHz) and ¹³C (100 MHz) NMR (nuclear magnetic resonance) data for 1 and 2 in methanol-d₄ (δ in ppm).

No.	1		2
	δC, Type	δH, Multi. (J in Hz)	δC, Type	δH, Multi. (J in Hz)
1	36.7, CH	3.15, m	36.5, CH	3.14, m
2	43.0, CH2	a 3.06, dd (17.6, 4.6)	43.3, CH2	a 3.07, dd (14.0, 4.4)
		b 2.86, m		b 2.89, m
3	203.4, C		202.5, C
4	127.4, CH	5.96, d (1.2)	126.7, CH	6.03, d (1.1)
5	154.1, C		156.0, C
6	34.1, CH2	a 2.80, m	33.2, CH2	a 2.54, m
		b 2.07, m		b 2.36, m
7	36.7, CH2	1.05, m	35.6, CH2	1.06, m
8	33.2, CH	2.30, m	33.0, CH	2.33, m
9	55.9, C		56.4, C
10	215.5, C		214.7, C
11	41.1, CH2	a 2.99, dd (18.0, 10.6)	41.8, CH2	2.95, m
		b 2.61, dd (18.0, 3.3)
12	54.8, CH	2.51, m	55.8, CH	2.35, m
13	215.4, C		215.5, C
14	44.1, CH2	a 3.44, dd (18.1, 3.7)	42.0, CH2	a 3.18, dd (17.9, 3.8)
		b 2.87, m		b 2.74, dd (17.9, 6.2)
15	31.2, CH	1.70, m	31.4, CH	1.72, m
16	21.0, CH3	0.92, d (6.7)	21.1, CH3	0.96, d (6.7)
17	21.2, CH3	0.92, d (6.7)	21.2, CH3	0.90, d (6.7)
18	16.8, CH3	1.07, s	16.5, CH3	1.13, s
19	26.1, CH3	1.86, d (1.2)	27.4, CH3	1.90, d (1.1)
20	176.3, C		176.6, C
21	41.6, CH	3.68, d (10.6)	42.0, CH	3.40, d (11.2)
22	128.2, CH	4.88, d (10.6)	126.4, CH	4.89, d (11.2)
23	136.9, C		133.1, C
24	38.3, CH2	2.00, m	35.5, CH2	a 2.22, m
				b 1.99, m
25	32.2, CH2	a 1.79, m	26.6, CH2	1.41, m
		b 1.43, m
26	76.2, CH	3.47, m	64.0, CH	2.90, m
27	84.4, C		61.2, C
28	37.1, CH2	a 2.08, m	39.4, CH2	a 1.99, m
		b 1.69, m		b 1.01, m
29	29.4, CH2	1.76, m	24.3, CH2	a 2.22, m
				b 1.98, m
30	79.3, CH	3.89, dd (10.2, 4.2)	130.6, CH	5.14, dd (9.1, 4.8)
31	151.6, C		135.6, C
32	72.0, CH	4.07, d (9.7)	78.7, CH	3.80, d (10.0)
33	76.4, CH	4.39, d (9.7)	71.8, CH	4.66, d (10.0)
34	130.2, C		130.7, C
35	132.7, C		132.7, C
36	38.9, CH2	a 2.45, m	38.7, CH2	a 2.55, m
		b 1.62, m		b 1.65, m
37	20.2, CH3	1.54, s	19.6, CH3	1.71, s
38	18.1, CH3	1.70, s	18.9, CH3	1.59, s
39	20.3, CH3	1.08, s	16.3, CH3	1.30, s
40	112.8, CH2	a 5.47, s	11.4, CH3	1.61, s
		b 5.21, s
41	52.3, CH3	3.63, s	52.3, CH3	3.64, s