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. 2013 Jul 18;7:125. doi: 10.1186/1752-153X-7-125

Table 1.

1H NMR spectral data for 1-3, 8-10 (300 MHz, in CDCl3, δ in ppm)

Proton 1 2 3 8 9 10
2
7.01(d,3.0)
6.58(d,3.0)
6.12(s)
-
-
-
4
7.55(d,3.0)
6.44(d,3.0)
-
-
-
-
5
-
7.39(d,3.0)
-
7.40(dd,8.0,3.0)
7.41(dd,8.0,3.0)
7.34(dd,8.0,3.0)
6
-
-
7.20(d,3.0)
7.61(ddd,8.0,8.0,3.0)
7.59(ddd,8.0,8.0,3.0)
7.55(ddd,8.0,8.0,3.0)
7
7.21(d,8.0)
7.07(dd,8.0,3.0)
-
7.29(ddd,8.0,8.0,3.0)
7.34(ddd,8.0,8.0,3.0)
7.34(ddd,8.0,8.0,3.0)
8
7.99(d,8.0)
7.89(d,8.0)
7.82(d,3.0)
7.82(dd,8.0,3.0)
8.40(dd, 8.0, 3.0)
8.39(dd,8.0,3.0)
1-OMe
4.40(s)
-
4.44(s)
-
-
-
3-OMe
-
3.93(s)
-
-
-
-
4-OMe
-
-
-
3.98(s)
-
-
5-OMe
4.10(s)
-
-
-
-
-
6-OMe
4.01(s)
-
-
-
-
-
N-Me
-
-
3.90(s)
3.77(s)
3.69(s)
3.70(s)
2’-Me
-
-
-
1.30(s)
1.33(s)
1.32(s)
1.30(s)
1.42(s)
1.28(s)
3’
-
-
-
2.72(dd,13,10)
2.68(dd,13,3.5)
3.23(overlapping m)
3.07(dd,13,3.5)
3.00(dd,13,3.5)
3.25(overlapping m)
4’
-
-
-
3.50(dd,10,3.5)
3.63(dd,10,3.5)
4.85(dd,10.0,10.0)
1-OH
-
12.12
-
15.05
15.00
14.92
3-OH
9.02
-
9.05*
-
-
-
4-OH
-
-
9.00*
-
9.05
9.10
5-OH
-
-
9.32*
-
-
-
6-OH
-
8.90
-
-
-
-
7-OH - - 8.92* - - -

*Assignments interchangeable.