Table 1.

¹H NMR Data of Compounds 1 – 6 (δ in ppm, J in Hz, 400 MHz)

position	1a	2a	3a	4a	5/6b
1	1.63, m	1.49, m	1.80, m	1.98, m	1.82, m
2	1.90, m	1.88, m	1.70, m	2.05, m	1.70, m
3	4.46, m	4.12, m	4.51, br s	4.52, br s	4.35, br s
5	2.10, overlap	2.10, m	3.30, s	2.20, br	3.03, s
6	4.07, d (3.2)	4.05, br. s		4.17, br s
7			3.80, d (4.0)		3.84, br s
8	3.39, q (6.8)	3.54, q (6.8)	1.90, m	3.55, q (6.8)	1.85, m
11	2.02, m	2.10, m	2.10, m	2.10, m	2.09, m
12	2.22, m	2.20, m	2.20, m	2.56, m	2.10, m
14	5.02, d (2.4)	5.22, d (2.4)	5.31, d (2.4)	6.38, s	1.70, m
					2.37, m
15	6.40, d (2.4)	6.48, d (2.4)	6.59, d (2.4)	7.44, s	5.40, d (4.4) /5.27, s
16	4.00, d (10.0)	4.04, d (10.4)	4.23, d (10.0)	7.37, s	3.56, d (7.6)
	4.27, d (10.0)	4.28, d (10.4)	4.58, d (10.0)		3.80, d (7.6)
17	0.98, d (6.8)	0.98, d (6.8)	1.22, d (6.8)	1.11, d (6.8)	1.05, d, (6.8)
18	0.89, s	0.93, s	0.95, s	0.96, s	0.84, s
19	1.31, s	1.37, s	1.35, s	1.42, s	1.25, s
20	1.45, s	1.49, s	0.91, s	1.55, s	0.78, s
22	2.00, s	1.95, s	2.16, s	2.05, s	2.00, s/2.01, s

^aMeasured in acetone-d₆.

^bMeasured in DMSO-d₆.