Table 1. ¹H NMR Spectroscopic Data for 1–6 (multiplicities, J in Hz)^a,b.

No.	1	2	3	4	5	6
2	5.97, br s	5.97, br s	5.84, br s	5.85, br s	5.84, br s	5.98, br s
4	4.62, t (6.4)	5.62, t (6.4)	2.51, 2.41 m	2.49, m	2.45, t (6.0)	4.61, t (6.8)
5	2.45, t (6.8)	2.52, t (6.8)	2.31, t (6.8)	2.34, m	2.32, t (6.0)	2.45, t (6.8)
6	5.14, t (7.2)	5.07, t (7.2)	5.12, t (6.8)	5.18, t (6.8)	5.09, m	5.14, t (7.2)
8	2.10, m	2.02, m	1.99-2.05, m	2.72, d (6.0)	2.01, t (6.4)	1.99-2.06, m
9	2.10, m	2.04, m	2.06-2.14, m	5.62, dt (15.6, 6.0)	2.07, t (6.4)	2.08-2.16, m
10	5.11, t (6.8)	5.11, t (6.4)	5.12, t (6.8)	5.57, d (15.6)	5.08, m	5.09, t (6.4)
12	2.03, m	2.00, m	2.06-2.14, m	1.61, m	1.90, 1.70, m	2.08-2.16, m
13	2.10, m	2.06, m	1.99-2.05, m	2.00, m	1.87, 1.57, m	1.99-2.06, m
16				1.41, m	1.65, 1.38, m	1.42, m
17	2.52, t (6.8)	2.52, t (6.8)	2.53, t (6.8)	1.56, m	1.54 m	1.57, m
18	2.33, t (6.8)	2.32, t (6.8)	2.34, t (6.8)	1.90, t (6.0)	2.30, 1.96, m	1.91, t (6.0)
20	1.72, s	1.71, s	1.72, s	1.58, s	4.89, 4.83, s	1.60, s
21	1.17, s	1.16, s	1.17, s	0.98, s	0.96, s	1.00, s
22	1.17, s	1.16, s	1.17, s	0.98, s	0.88, s	1.00, s
23	1.65, s	1.59, s	1.63, s	1.33, s	1.60, s	1.65, s
24	1.66, s	1.62, s	1.65, s	1.64, s	1.60, s	1.67, s
25	4.87, br s	4.83, dd (17.6, 1.6)	5.99, br s	5.99, br s	5.98, br s	4.87, br s
		4.75, dd (17.6, 1.6)
OAc		2.10 s

^aAssignments based on HSQC and HMBC spectra.

^bAll spectra were recorded in CDCl₃.