Table 1.

NMR data (CD₃OD) of compound 5.

Position	δH (mult., J in Hz)	δC	HMBC
1-NMe	4.38 (s)	46.1	2, 6
2	9.10 (bs)	148.7	1-NMe, 4, 6, COO-
3	-	137.8	-
4	8.84 (bd, 8.2)	146.3	2, 6, COO−Na+
5	8.19 (d, 8.2)	126.6	3, 6, 1′
6	-	163.0	-
1′	5.13 (dd, 3.3, 9.0)	69.3	6, 2′
2′	1.72 (m)	38.9	6, 1′, 3′, 4′
	1.81(m)
3′	1.54 (m)	19.9	1′, 2′, 4′
	1.63 (m)
4′	1.00 (t, 7.5)	14.0	2′, 3′
–COO-	-	167.0	-