TABLE 3.

¹H (600 MHz) and ¹³C (150 MHz) NMR data of compounds 21, 22, and 25 in DMSO-d₆.

Position	21		22		25a
	δC	δH (J in Hz)b	δC	δH (J in Hz)	δC	δH (J in Hz)
1	122.4, C		122.4, C		130.8, C
2	119.0, CH	6.81, d (2.0)	118.9, CH	6.81, d (2.0)	124.9, CH	7.10, s
3	144.2, C		144.2, C		141.5, C
4	145.1, C		145.0, C		141.3, C
5	114.7, CH	6.74, d (8.2)	114.7, CH	6.73, d (8.2)	123.2, CH	7.32, d (8.5)
6	121.6, CH	6.66, dd (8.2, 2.0)	121.6, CH	6.66, dd (8.2, 2.0)	128.4, CH	7.17, d (8.5)
1′	118.4, C		118.3, C		122.7, C
2′	152.2, C		152.2, C		142.4, C
3′	183.4, C		183.3, C		143.0, C
4′	141.6, C		141.6, C		132.9, C
5′	131.2, CH	6.72, s	131.2, CH	6.65, s	110.5, CH	7.04, s
6′	187.0, C		186.9, C		152.6, C
1″	123.1, C		123.5, C		135.4, C
2″	130.8, CH	7.46, d (8.5)	116.6, CH	7.04, d (2.2)	124.0, CH	7.54, s
3″	115.3, CH	6.85, d (8.5)	147.5, C		141.9, C
4″	159.1, C		145.1, C		141.6, C
5″	115.3, CH	6.85, d (8.5)	115.5, CH	6.80, d (8.0)	123.7, CH	7.39, d (8.5)
6″	130.8, CH	7.46, d (8.5)	120.9, CH	6.94, dd (8.0, 2.0)	127.1, CH	7.58, d (8.5)
3′-OMe					60.8, CH3	3.42, s
6′-OMe					56.2, CH3	3.79, s

^aThe ¹H and ¹³C NMR Data for five acetoxy were δ_H 2.06 (s, 3H), 2.29 (s, 3H), 2.31 (s, 9H), and δ_C 168.3 × 2 (C), 168.4 × 2 (C), 168.7 (C), 20.0 (CH₃), 20.4 × 4 (CH₃), respectively. ^bd, dd, s respectively means doublet, a doublet of doublets, and singlet.