Table 1.

¹H and ¹³C NMR data of compounds 1 and 2 in CD₃OD (δ in ppm, 800 MHz for ¹H and 200 MHz for ¹³C) ^a.

Position	1		2
	δ H	δ C	δ H	δ C
1		127.0		127.3
2	7.01 d (1.5)	109.2	7.74 d (2.0)	112.6
3		146.5		145.9
4		147.9		147.0
5	6.89 d (8.0)	114.6	6.86 d (8.0)	113.7
6	7.05 dd (1.5, 8.0)	123.1	7.08 dd (2.0, 8.0)	125.5
7	7.58 d (16.0)	114.6	6.77 d (13.0)	143.7
8	6.27 d (16.0)	115.6	5.79 d (13.0)	116.8
9		167.3		166.7
1′	4.16 t (7.0)	64.4	4.09 t (7.0)	64.4
2′	1.37 m	28.6	1.30 m	28.5
3′	1.67 m	25.9	1.62 m	25.8
4′		n.d.b		n.d. b
5′	1.23 s	29.5	1.23 s	29.5
6′	1.23 s	29.5	1.23 s	29.5
–OCH3	3.91 s	55.6	3.91 s	55.6

^aJ values are in parentheses and reported in Hz; ¹³C NMR assignments are based on ¹H-¹H COSY, HSQC, and HMBC experiments; ^b not detected.