TABLE 2.

¹H (600 MHz) and ¹³C (150 MHz) NMR data of compounds 1, 18, and 19 in DMSO-d₆.

Position	1		18		19
	δ C	δ H (J in Hz)a	δ C	δ H (J in Hz)	δ C	δ H (J in Hz)
1	126.5, C		125.7, C		125.7, C
2	115.0, CH	6.88, d (1.8)	118.6, CH	6.75, d (2.0)	118.6, CH	6.74, d (2.0)
3	148.2, C		143.8, C		143.7, C
4	146.7, C		144.3, C		144.2, C
5	112.5, CH	6.96, d (8.3)	114.8, CH	6.71, d (8.0)	114.8, CH	6.71, d (8.0)
6	123.1, CH	6.82, dd (8.3, 1.8)	122.0, CH	6.60, dd (8.0, 2.0)	122.0, CH	6.59, dd (8.0, 1.9)
1′	117.7, C		116.0, C		115.8, C
2′	148.3, C		145.0, C		144.9, C
3′	139.5, C		134.4, C		134.4, C
4′	132.7, C		129.6, C		130.1, C
5′	103.2, CH	6.46, s	106.5, CH	6.26, s	106.5, CH	6.24, s
6′	153.2, C		148.2, C		148.1, C
1″	138.2, C		128.2, C		128.2, C
2″	128.7, CH	7.61, d (7.5)	130.0, CH	7.35, d (8.5)	116.6, CH	6.97, d (2.0)
3″	128.4, CH	7.47, t (7.5)	114.9, CH	6.79, d (8.5)	144.7, C
4″	127.3, CH	7.37, t (7.5)	156.2, C		144.2, C
5″	128.4, CH	7.47, t (7.5)	114.9, CH	6.79, d (8.5)	115.3, CH	6.75, d (8.0)
6″	128.7, CH	7.61, d (7.5)	130.0, CH	7.35, d (8.5)	119.9, CH	6.79, dd (8.0, 2.0)
1″′	64.8, CH2	4.53, d (6.7)
2″′	120.4, CH	5.47, t (6.7)
3″′	136.9, C
4″′	18.0, CH3	1.72, s
5″′	25.5, CH3	1.76, s
3-OMe	55.5, CH3	3.73, s
3′-OMe	60.4, CH3	3.30, s
6′-OMe	55.7, CH3	3.67, s
2′-OH		8.68, s

^ad, dd, s, t respectively means doublet, a doublet of doublets, singlet and triplet.