Table 1.

Spectral data of compound 6.

	6
Position	δH, Multiplicity, (J in Hz)	δC
2	-	158.8
3	-	134.6
4	-	179.2
5	-	163.0
6	6.09, d, J = 2.0 Hz	99.8
7		165.7
8	6.27, d, J = 2.1 Hz	94.6
9	-	158.3
10	-	105.7
1′	-	123.1
2′	7.56, d, J = 2.0 Hz	117.1
3′	-	146.0
4′	-	149.7
5′	6.85, d, J = 9.0 Hz	116.0
6′	7.55, dd, J = 2.1, 8.6 Hz	123.5
1″	5.63, d, J = 8.0 Hz	100.4
2″	5.13, dd, J = 9.5, 8.0 Hz	75.7
3″	3.68, t, J = 9.2 Hz	76.2
4″	3.46, m	72.0
5″	3.56, ddd, J = 9.3, 6.9, 2.3 Hz	76.0
6″	4.38, dd, J = 11.7, 2.2 Hz, H-6a 4.22, dd, J = 11.8, 6.8 Hz, H6b	64.2
1‴	-	127.1
2‴, 6‴	7.50, d, J = 8.7 Hz	131.2
3‴, 5‴	6.83, d, J = 8.6 Hz	116.8
4‴	-	161.3
7‴	7.73, d, J = 15.9 Hz	147.1
8‴	6.44, d, J = 15.9 Hz	115.2
9‴	-	168.6
1⁗	-	127.3
2⁗, 6⁗	7.33, d, J = 8.6 Hz	131.3
3⁗, 5⁗	6.83, d, J = 8.6, Hz	116.8
4⁗		161.2
7⁗	7.42, d, J = 15.9 Hz	146.6
8⁗	6.10, d, J = 15.9 Hz	114.7
9⁗		168.8