Table 1. ¹H (600 MHz) and ¹³C (100 MHz) NMR Data of 1 and 2 in CD₃OD.

	1		2
no.	δH, mult (J, Hz)	δC	δH, mult (J, Hz)	δC
2	7.21, s	125.7, CH	7.19, s	124.6, CH
3		111.9, C		111.1, C
4	7.62, d (8.5)	120.5, CH	7.63, d (7.9)	119.3, CH
5	6.97, dd (8.5, 1.8)	120.2, CH	7.00, t (7.3)	119.7, CH
6		128.2, C	7.08, t (7.3)	122.3, CH
7	7.31, d (1.8)	111.5, CH	7.32, d (8.1)	112.2, CH
8		138.3, C		138.0, C
9		127.6, C		128.8, C
10	3.43, dd (14.8, 4.6) 3.19, dd (14.8, 8.8)	28.3, CH2	3.41, dd (14.8, 5.0) 3.23, dd (14.8, 8.6)	28.4, CH2
11	4.87, dd (8.8, 4.6)	55.0, CH	4.93, dd (8.6, 5.0)	55.1, CH
13		170.3, C		170.3, C
14		127.5, C		127.6, C
15		154.3, C		154.4, C
16	6.66, d (8.8)	115.5, CH	6.66, d (8.8)	115.5, CH
17	7.16, d (8.8)	131.2, CH	7.16, d (8.7)	131.2, CH
18		125.6, C		125.6, C
19		135.2, C		135.2, C
20		175.4, C		175.5, C
21	2.07, s	17.1, CH3	2.06, s	17.0, CH3