Table 1

NMR Spectroscopic Data for Compounds 1-3.

position

Compound 1

Compound 2

Compound 3


δ(H)

δ(C)

δ(H)

δ(C)

δ(H)

δ(C)


CH(1,1') or CHO

7.34 (m, 1H)

126.9(s)

7.12 (q, J = 7.4, 2H)

126.9(s)

9.52 (s, 1H)

179.4(s)


CH(2,2') or C(2)

7.33 (m, 1H)

128.4(s)

7.22 (m, 2H)

128.1(s)

153.9(s)


CH(3, 3')

7.28 (m, 1H)

127.5(s)

7.23 (m, 2H)

127.9(s)

7.37 (d, J = 3.545, 1H)

124.8(d)


CH(4, 4')

7.33 (m, 1H)

128.4(s)

7.22 (m, 2H)

128.1(s)

6.57 (d, J = 3.560, 1H)

110.8(d)


CH(5, 5') or C(5)

7.34 (m, 1H)

126.9(s)

7.12 (q, J = 7.4, 2H)

126.9(s)

163.2(s)


C(6,6') or CH2(6)

140.8(s)

139.8(s)

4.60 (s, 2H)

57.6(t)


CH2(7) or CH(7)

4.65 (s, 2H)

65.2(s)

4.71 (s, 2H meso)

79.1(d)


OH

1.98 (br s, 1H)

2.85 (br s, 2H)


δ in ppm, J in Hz

Compound 1 and Compound 2 Measured in CDCl3, Chemical shifts referenced to residual CDCl3 (7.256 ppm). Compound 3 Measured in CD3OD, Chemical shifts referenced to residual CD3OD (49.00 ppm)

Zhou et al. BMC Complementary and Alternative Medicine 2012 12:12   doi:10.1186/1472-6882-12-12

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