Table 1.

¹ H and ¹³ C NMR data for compounds 1 and 2 (600 and 150 MHz, CD₃OD).

Pos.	1 δC, type	δH, m (J in Hz)	HMBC	2 δC, type	δH, m (J in Hz)	HMBC
2	160.8, C			160.0, C
3	108.4, CH	5.99, s	2, 4a, 1‴	110.4, CH	5.91, s	2, 4a, 1″
4	142.6, C			157.9, C
4a	103.8, C			102.3, C
5	161.6, C			163.7, C
6	93.0, C			103.6, C
7	165.5, C			167.2, C
8	112.3, C			99.3, CH	6.06, s	4a
8a	156.7, C			158.2, C
1′	204.1, C			204.0, C
2′	48.4, CH2	3.20, dd (15.5, 6.0) 3.38, dd (15.5, 7.4)	1′,3′,4′,5′	48.1, CH2	3.23, dd (15.8, 7.3) 3.42, dd (15.8, 6.1)	1′,3′,5′, 4′
3′	30.6, CH	2.66, m	2′,4′,5′	30.4, CH	2.68, m	1′,2′,5′, 4′
4′	69.0, CH2	4.20, t (6.1)	2′, 3′, 4′, 6′	68.9, CH2	4.21, t (6.1)	2′, 3′, 5′, 6′
5′	16.3, CH3	1.13, d (6.8)	2′, 3′, 5′	16.3, CH3	1.03, d (6.8)	2′, 3′, 4′
6′	167.2, C			167.2, C
7′	117.4, CH	6.37, d (16.0)	6′, 8′, 9′	117.4, CH	6.43, d (16.0)	6′, 8′, 9′
8′	144.8, CH	7.55, d (16.0)	6,7′, 9′,10, 14′	144.9, CH	7.60, d (16.0)	5′, 7′, 9′, 10′, 14′
9′	134.4, C			134.5, C
10′/14′	128.0, CH	7.53	8′, 12′	128.0, CH	7.57
11′/13′	128.7, CH	7.39*	9′	128.7, CH	7.39*
12′	130.1, CH	7.38*		130.2, CH	7.35*
1″	21.0, CH2	3.29, d (7.2)	5, 7, 8, 2″, 12	139.9, C
2″	121.7, CH	5.02, m	1′, 5′, 3′, 4′	127.0, CH	7.27*
3″	131.8, C			127.2, CH	7.34*
4″	24.6, CH3	1.65, s	2′, 3′, 5′	127.8, CH	7.34*
5″	16.8, CH3	1.75, s	2′, 3′, 4′	127.2, CH	7.34*
6″				127.0, CH	7.27*
1″	38.9, CH2	3.01 t (7.2)	3, 4a, 5, 2‴, 3‴
2″	23.2, CH2	1.65, m	1″, 3″
3″	13.1, CH3	1.02, t (7.3)	1″, 2″

^*Overlapped signals