Table 3.

¹H and ¹³C NMR Data of 3 and 3a in CD₃OD

No.	3		3a
	δH (J in Hz)a	δC, typeb	δH (J in Hz)c	δC, typed
1		173.0, C		177.8, C
3	3.62, t (7.5)	41.9, CH2	3.80 dd 7.6 7.6	42.1, CH2
4	2.95, m	28.4, CH2	3.13 dd 7.6 7.6	27.1, CH2
4a		141.1, C		140.4, C
5	6.30, s	117.8, CH	6.78, s	113.5, CH
6		167.5, C		153.8e
7		144.1, C		140.8, C
8		145.9, C		146.4, C
8a		101.8, C		107.9, C
9	3.31, overlapped	34.7, CH2	3.48 dd 7.6 7.6	35.6, CH2
10	1.73, m	27.3, CH2	1.75, m	26.6, CH2
11	1.63, m	30.2, CH2	1.65, m	30.1, CH2
12	3.21, m	40.0, CH2	3.20 dd 7.1 7.1	39.9, CH2
1′		173.2, C		173.3, C
2′	1.90, s	22.6, CH3	1.92, s	22.6, CH3
1″		168.8, C		171.3, C
2″	2.98, m	28.9, CH2	3.06 dd 7.4 7.4	28.9, CH2
3″	1.90, overlapped	25.2, CH2	1.94, m	24.9, CH2
4″	1.63, m	29.7, CH2	1.65, m	29.8, CH2
5″	3.21, m	40.1, CH2	3.23 dd 7.1 7.1	39.9, CH2
1″′		173.2, C		173.3, C
2″′	1.93, s	22.6, CH3	1.89, s	22.6, CH3

^aMeasured at 500 MHz

^bMeasured at 125 MHz

^cMeasured at 600 MHz

^dMeasured at 150 MHz

^eDetected by HMBC