Table 4.

¹³C NMR spectroscopic data of compounds 5–7

No.	5*a	6*a	7*a
1	162.2	162.2	161.9
2	117.4	117.5	117.5
3	146.7	146.8	147.7
4	121.9	121.9	121.2
5	113.0	110.9	113.3
6	166.1	165.4	164.1
7	108.1	107.8	106.3
8	162.0	161.8	161.7
9	188.4	188.6	188.6
10	57.3	57.6	57.3
1a	117.7	118.2	118.5
4a	139.8	140.6	141.9
5a	144.5	145.5	144.1
8a	116.5	117.8	116.1
3-Me	21.8	22.0	22.2
1′	162.9	162.9	162.0
2′	117.5	117.7	117.6
3′	147.5	147.6	147.7
4′	121.4	121.6	121.2
5′	111.7	112.6	111.0
6′	164.9	165.2	164.9
7′	104.2	106.2	105.5
8′	162.0	162.0	161.4
9′	188.4	188.3	188.5
10′	57.5	57.5	57.4
1a′	117.9	117.2	118.6
4a′	142.4	141.7	141.9
5a′	146.7	146.5	144.1
8a′	117.0	116.1	117.4
3′-Me	22.0	21.9	22.2
6′-OMe	56.5	56.4	56.1
1″	106.2	106.3	105.1
2″	74.9	75.0	75.1
3″	78.8	78.7	78.5
4″	71.6	71.4	71.6
5″	77.5	77.5	76.8
6″	62.9	62.8	62.7
1′′′	104.9	104.5	105.0
2′′′	74.5	74.5	75.1
3′′′	78.8	78.6	78.4
4′′′	71.2	71.3	71.3
5′′′	77.4	77.5	76.8
6′′′	62.6	62.6	62.6

^{a 13}C NMR data were measured in CD₃OD at 150 MHz