Table 2.

¹H (150 MHz) and ¹³C (600 MHz) NMR data of compounds 1–3 recorded in CD₃OD (δ in ppm; J in Hz).

Pos.	1		2		3
	δ H	δ C	δ H	δ C	δ H	δ C
2	–	157.3	–	157.5	–	157.4
3	–	160.9	–	161.0	–	161.5
5	–	131.3	–	132.8	–	132.8
6	–	135.8	–	135.3	–	134.2
7	3.34 m	30.9	3.33 m	31.5	3.33 m	30.9
8	1.20 d 6.8	20.5	1.22 d 6.8	20.5	1.20 d 6.8	20.4
9	1.20 d 6.8	20.5	1.22 d 6.8	20.5	1.20 d 6.8	20.5
10	2.22 s	15.2	2.29 s	14.8	2.29 s	14.8
11	2.57 q 7.5	26.1	4.89 q 6.5	66.6	4.52 q 6.5	76.6
12	1.17 t 7.5	13.7	1.44 d 6.5	22.5	1.47 t 6.5	19.5
11-OCH3	–	–	–	–	3.22 s	55.9