Table 1.

¹H-, ¹³C-NMR and HMBC data of compounds 1 and 2.

No.	1 (Acquired in DMSO-d6)			2 (Acquired in Acetone-d6)
	δC a, Type	δH (J in Hz) b	HMBC	δC a, Type	δH (J in Hz) b	HMBC
1	161.7, C			164.9, C
2	100.8, C			129.0, C
3	158.7, C			160.9, C
4	70.4, C			68.1, C
5	36.8, CH2	3.58, d (14.0)	1, 4, 6, 7, 11	33.0, CH2	2.09, d (15.0)	6, 7
		2.98, d (14.0)			2.54, d (15.0)
6	129.7, C			74.0, C
7	122.2, CH	5.82, d (2.5)	6, 8	75.2, CH	4.40, br s	6, 8
8	122.4, CH	5.76, dd (10.0, 2.5)	6, 10	130.3, CH	5.54, br d (10.4)	6, 10
9	132.2, CH	5.69, br d (10.0)	7, 11	128.9, CH	5.60, br d (10.4)	7, 11
10	69.5, CH	4.54, br dd (13.5, 4.5)		65.9, CH	4.65, br s	9
11	91.4, CH	4.92, d (13.5)	10	89.8, CH	4.00, d (8.2)	6, 10
12	53.5, CH	4.95, br s	2, 3, 13, 14, 23	118.1, CH	7.25, s	3, 14, 18
13	118.3, C			115.6, C
14	149.7, C			150.1, C
15	132.3, C			137.1, C
16	153.1, C			154.8, C
17	107.0, CH	6.76, d (8.4)	13, 15, 16	104.8, CH	6.66, d (8.7)	13, 15
18	119.2, CH	6.94, d (8.4)	12, 14, 16	126.0, CH	6.90, d (8.7)	14, 16
19	60.2, CH3	3.73, s	15	61.0, CH3	3.79, s	15
20	56.2, CH3	3.80, s	16	56.4, CH3	3.89, s	16
21	28.2, CH3	2.78, s	1, 2	35.6, CH3	2.91, s	1, 2
22	13.2, CH3	2.36, s	4	13.9, CH3	2.26, s	4
23	13.0, CH3	1.78, s	12
10-OH		5.29, d (4.5)

^a Measured at 125 MHz. ^b Measured at 500 MHz. Multiplicities were determined by DEPT and HSQC experiments.