Table 1.

NMR (CD₃OD) data of compound 1 (δ in ppm, J in Hz).

Position	1H *	13C *
1	-	133.9
2	-	160.6
3	-	105.2
4	-	162.6
5	6.65 (d, 8.1)	115.5
6	7.47 (d, 8.1)	132.5
1′	4.84 **	77.3
2′	3.70 (m)	74.3
3′	3.38 (m)	80.0
4′	3.38 (m)	71.0
5′	3.30 (m)	82.5
6′	3.68 (m)	62.1
Carbonyl	-	198.6

* Solvent signal as reference. ** Overlapped with signal of residual water.