Table 2.

¹H (600 MHz) and ¹³C-NMR (150 MHz) assignments of compounds 4,5 (CDCl₃).

No.	4		5
	δ C	δH (J in Hz)	δ C	δH (J in Hz)
1	182.8		179.6
2	143.8		154.8
3	140.4		118.7
4	184.4		185.7
4a	140.0		135.0
5	119.4	7.74, dd, 8.4, 1.2	119.6	7.80, d, 8.4
6	135.0	7.67, t, 8.4	136.2	7.72, t, 8.4
7	117.9	7.29, d, 8.4	117.0	7.27, d, 8.4
8	159.8		160.2
8a	119.8		116.8
1′	33.2	3.62, s	33.0	2.81, dd, 13.2, 3.6 2.76, dd, 13.2, 7.8
2′	169.5		67.6	4.12, m
3′	41.8	3.78, s
4′	203.1
2′-OCH2CH3	61.4	4.14, m
2′-OCH2CH3	14.1	1.26, t, 6.0
2′-CH3			23.6	1.26, d, 6.6
4′-CH3	30.1	2.30, s
8-OCH3	56.5	4.00, s	56.7	4.04, s