Table 2.

¹H NMR (400 MHz, CDCl₃) and ¹³C NMR (100 MHz, CDCl₃) data for compound 4

	4
Pos.	δC	type	δH	mult (J in Hz)
1	202.3	C
2	50.5	CH2	2.88	ddd (2.1, 4.8, 13.0)
			2.44	dd (11.6, 13.0)
3	67.9	CH	4.02	m
4	42.6	CH2	2.32	m
			1.60	m
5	31.0	CH	2.08	m
6	61.1	CH	2.95	d (12.2)
7	20.5	CH3	1.12	d (6.4)
8	156.9	C
9	112.4	CH	6.09	s
10	141.7	C
11	107.7	CH	5.53	d (1.1)
12	192.9	C
13	83.9	C
14	193.0	C
15	115.3	C
16	153.7	CH	7.84	d (1.1)
17	22.0	CH3	1.54	s
1′	176.4	C
2′	36.2	CH	2.70	m
3′	40.8	CH2	1.77	m
			1.13	m
4′	31.8	CH	1.52	m
5′	29.5	CH2	1.34	m
			1.15	m
6′	11.1	CH3	0.89	t (7.4)
7′	17.6	CH3	1.19	d (7.0)
8′	19.1	CH3	0.92	d (6.6)