Table 2.

¹H NMR and ¹³C NMR data of compound 1 (Q3R) (in DMSO-d₆)

Position	Compound 1 (Q3R)
	H	C
2	–	157.7
3	–	134.8
4	–	178.3
5	–	162.1
6	6.27, d, J = 2.1 Hz	98.5
7	–	164.7
8	6.49, J = 2.1 Hz	93.9
9	–	157.3
10	–	104.6
1’	–	122.1
2’	7.41, dd, J = 2.2, 8.3 Hz	121.8
3’	6.99, d, J = 8.3 Hz	115.3
4’	–	148.2
5’	–	144.8
6’	7.52, d, J = 2.0 Hz	115.9
1’’	5.53, brd s	101.7
2’’	4.24, m	70.4
3’’	3.76, dd, J = 3.8, 9.2 Hz	71.0
4’’	3.38, d, J = 9.4 Hz	72.0
5’’	3.44, dd, J = 6.1, 9.5 Hz	70.4
6’’	0.93, d, J = 6.1 Hz	16.7