Table 4.

¹H and ¹³C NMR data of 1 and 2 (acquired in CD₃OD).

Position	1		2
	δC, Type	δH (J in Hz)	δC, Type	δH (J in Hz)
2	168.0, C		165.5, C
3	117.8, C		121.6, C
4	182.1, C		178.2, C
4a	105.1, C		109.0, C
5	163.2, C		162.2, C
6	99.3, CH	6.32, d (2.2)	97.1, CH	6.50, d (2.3)
7	167.4, C		166.1, C
8	93.3, CH	6.49, d (2.2)	93.9, CH	6.59, d (2.3)
8a	159.0, C		161.1, C
9	56.5, CH3	3.86, s	56.4, CH3	3.91, s
10	18.1, CH3	2.52, s	17.8, CH3	2.48, s
11			55.5, CH2	4.57, s
12			56.5, CH3	3.90, s
2′	180.2, C
3′	69.5, CH	4.90, dd (9.3, 5.9)
4′	36.2, CH2	2.48, m 2.75, ddd (13.5, 9.3, 4.1)
5′	74.9, CH	5.73, dd (9.9, 4.1)