Ormocarpin (R1=Glc, R2=R3=H)

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Taxonomy: Physicochemical and Pharmacological Properties of Flavonoids – Biflavonoids

Biological sources: Ormocarpum kirkii [1]

C42H42O20: 866.7860

MP: 230–232°C

[α]D20 + 103° (MeOH + H2O)

UV: 225, 289, 335 (sh), (4.39; 4.24; 3.43) [1]

FAB Ms: 866 (M)+, 433

1H NMR (CDCl3 + CD3OD): 2.79 (d, J = 12, H-3), 5.94 (d, J = 12, H-2), 6.13, 6.24 (d, J = 2, H-6,8), 6.73, 6.86 (d, J = 8, H-2′,6′,3′,5′), Glc: 4.75 (d, J = 7, H-1), 3.80, 4.00 (H-2,5), 3.45, 3.65 (m, H2-6), [1]

13 C NMR (DMSO-d 6) [ 1]:

Table 1

C-2/2″

84.1

C-1′/1″′

130.1

Glc C-1/1′

100.4

3/3″

50.1

2′/2″′

126.9

2/2′

73.4

4/4″

197.7

3′/3″′

116.2

3/3′

77.8

5/5″

166.4

4′/4″′

163.7

4/4′

70.3

6/6″

96.3

5′/5″′

116.2

5/5′

77.0

7/7″

163.2

6′/6″′

126.9

6/6′

61.4

8/8″

97.7

        

9/9″

159.2

        

10/10″

104.0

        
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References

  1. 1.
    E. Nyandat, A. Hassanali, Y. De Vicente, G. Multari, C. Galeffi, Phytochemistry 29, 2361 (1990)CrossRefGoogle Scholar

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