Table 4.

¹H NMR data (500 MHz, δ in ppm, J in Hz), ¹³C NMR data (125 MHz, δ in ppm) for compounds 3 and 4 in CDCl₃.

Position	3 (CDCl3)		4 (CDCl3)
	δC	δH (J in Hz)	δC	δH (J in Hz)
1	13.09, CH3	1.20d (6.38)	13.18, CH3	1.19d (6.34)
2	78.07, CH	4.02∗	79.54, CH	4.08∗
3	84.01, C		82.97, C
4	74.61, CH	3.98s	75.33, CH	3.98s
5	83.09, C		82.62, C
6	82.77, CH	3.75s	80.29, CH	3.61s
7	76.42, C		78.18, C
8	141.93, CH	6.22∗	146.64, CH	5.99d (15.33)
9	128.81, CH	6.39∗	128.14, CH	6.38∗
10	137.80, CH	6.53∗	137.25, CH	6.49∗
11	131.27, CH	6.48∗	131.53, CH	6.43∗
12	135.99, CH	7.16dd (14.99, 11.21)	135.84, CH	7.16dd (15.07, 11.09)
13	119.02, CH	6.51∗	119.22, CH	6.46∗
14	154.56, C		154.52, C
15	108.12, C		108.36, C
16	170.99, C		171.10, C
17	88.66, CH	5.55s	88.72, CH	5.60s
18	164.43, C		164.63, C
19	16.15, CH3	1.25s	17.28, CH3	1.25s
20	16.92, CH3	1.33s	18.57, CH3	1.34s
21	31.57, CH3	1.33s	26.50, CH3	1.28s
22	8.85, CH3	1.97s	8.85, CH3	1.98s
23	56.27, CH3	3.85s	56.31, CH3	3.86s

^∗Peaks are overlapped.