Table 1.

Summary of ¹H (500 MHz) and ¹³C (125 MHz) Spectroscopic Data for 1, 2, and 3 (in CDCl₃).

position	1(J in Hz)		2(J in Hz)		3(J in Hz)
	δH mult	δC	δH mult	δC	δH mult	δC
1		175.7, s		175.7, s		175.5, s
2	7.15, d (16.0)	116.5, d	7.16, d (15.5)	116.6, d	7.14, d (16.0)	116.1, d
3	7.60, d (15.5)	150.6, d	7.58, d (16.0)	150.5, d	7.59, d (15.5)	150.5, d
4		134.7, s		135.3, s		134.4, s
5	6.29, d (9.5)	145.4, d	6.07, d (9.5)	147.0, d	6.24, d (9.5)	146.0, d
6	2.89, m	35.0, d	2.64, m	39.2, d	2.87, m	34.3, d
7	3.92, d (10.5)	76.2, d	3.93, m	71.1, d	3.58, d (11.0)	79.2, d
8	2.04, m	36.6, d	1.90, m 1.66, m	26.1, t	1.98, m	35.3, d
9	3.98, m	71.8, d	4.15, m	68.3, d	4.01, m	73.2, d
10	4.41, d (7.0)	67.3, d	4.30, d (6.5)	63.7, d	3.96, m	77.1, d
11	3.19, s	64.2, d	3.15, s	63.9, d	3.95, m	75.8, d
12		56.4, s		56.3, s	1.78, m	47.1, d
13		96.5, s		96.4, s		99.3, s
14	1.42, s	22.3, q	1.37, s	22.5, q	1.36, s	26.9, q
15	1.93, s	12.5, q	1.92, s	12.9, q	1.91, s	12.3, q
16	1.14, d (7.0)	17.3, q	1.08, d (7.0)	16.3, q	1.13, d (6.0)	17.1, q
17	0.96, d (7.5)	13.2, q	-	-	0.96, d (7.5)	12.8, q
18	1.40, s	16.6, q	1.35, s	16.7, q	1.14, d (6.5)	12.8, q
2′		176.7, s		176.8, s		176.5, s
3′		100.1, s		100.2, s		99.8, s
4′		192.8, s		192.8, s		192.4, s
5′	3.82, s	51.8, t	3.82, s	51.8, t	3.82, s	51.5, t