Table 1.

¹H (400 MHz) and ¹³C (100 MHz) NMR data of 1 and 2 in CD₃OD.

Position	1		2
	δC Type	δH (J in Hz)	δC Type	δH (J in Hz)
1	163.2, C		163.4, C
2	109.3, CH	6.43, d, 8.2	109.7, CH	6.44, d, 8.2
3	138.9, CH	7.38, t, 8.2	139.0, CH	7.39, t, 8.2
4	108.7, CH	6.52, d, 8.2	109.5, CH	6.55, d, 8.2
4a	160.8, C		160.3, C
5	74.3, CH	4.69, brs	74.6, CH	4.29, m
6	140.5, C		29.2, CH	2.34, m
7	122.3, CH	5.61, dq, 4.8,1.7	32.0, CH2	1.57, dt, 14.8, 2.8
				2.43, m
8	67.9, CH	4.55, d, 4.8	68.6, CH	4.44, t, 3.6
8a	74.5, C		85.4, C
9	197.2, C		196.2, C
9a	108.4, C		108.6, C
10a	86.5, C		76.4, C
11	19.2, CH3	1.86, d, 1.7	18.1, CH3	1.32, d, 7.8
12	64.1, CH2	Ha 4.12, d, 13.2	60.5, CH2	Ha 3.83, d, 13.5
		Hb 4.03, d, 13.2		Hb 4.28, m