Table 1.

¹H NMR Spectral Data for 1 – 4 (400 MHz, CDCl₃)

Proton	1	2	3	4
2	2.67 m	2.58 m	2.54 m	2.65 m
3	4.12 m	4.12 m	4.22 m	4.10 m
4	1.70 m	1.66 m	1.64 m	1.70 m
5	1.65 m	1.60 m	1.60 m	1.64 m
7	1.59 m	1.59 m	1.60 m	1.60 m
8	1.45 m	1.46 m	1.40 m,	1.31 m
9	1.23m	1.20 m	1.23 m	1.99 m
10	1.30 m	1.24 m	1.35 m	–
11	1.20 m	1.22 m	1.26 m	5.06 m
12	1.88 m	1.88 m	2.06 m	2.08 m
13	1.58 m	1.58 m	–	2.04 m
15	2.00 m	1.99 m	1.89 m	5.09 m
16	1.35 m	1.41 m	1.64 m	1.96 m
17	1.45 m	1.45 m	1.48 m	1.35 m
19	1.28 d (6.6)	1.24 d (6.6)	1.25 d (6.6)	1.28 d (6.6)
20	1.25 s	1.22 s	1.25 s	1.26 s
21	0.75 d (6.5)	0.76 d (6.1)	0.77 d (6.6)	1.69 s
22	4.51 s, 4.87 s	4.51 s, 4.86 s	1.60 s	1.61 s
23	0.93 s	0.95 s	1.00 s	0.94 s
24	0.87 s	0.87 s	0.97 s	0.88 s
OCH3	3.70 s	–	3.67 s	3.71 s