Table 1.

¹H-NMR Data for 1–3, 5 in CDCl₃ and 4 in acetone-d₆.

Position	1 a	2 a	3 a	4 a	5 a
5	4.65, s	4.85, s	4.63, s	4.78, s	4.78, d (17)
					4.71, d (17)
6	6.10, d (16)	6.26, d (16)	2.45, t (7.5)	6.24, d (16)	2.61, t (7.5)
7	6.86, m	6.97, m	1.52, m	6.85, m	1.55, m
8	1.86, d (7.0)	1.89, d (6.7)	0.93, t (7.5)	1.81, d (6.5)	0.94, t (7.5)
9	2.70, m	6.77, d (16)	2.67, br s	2.90, dd (15, 3.6)	2.86, dd (12, 4.0)
				2.65, dd (15, 6.0)	2.44, dd (12, 7.0)
10	2.70, m	6.04, dd (16, 7.7)	2.67, br s	2.77, m	2.75, ddd (7.0, 4.0, 2.0)
11		4.52, m		2.85, dq (4.5, 2.0)	2.81, dq (7.5, 2.0)
11-OH		1.75, br s
12	2.18, s	1.68, d (7.0)	2.19, s	1.24, d (4.5)	0.93, d (7.5)

^a Recorded at 500 MHz. J values are given in Hz.