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Vitexin (data page)

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Chemical data page

This page provides supplementary chemical data on vitexin.

Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as eChemPortal, and follow its directions.

Spectral data

UV-Vis
Lambda-max UV : 335, 271 nm
Extinction coefficient log ε: 4.08, 4.15
IR
Major absorption bands ? cm
NMR
Proton NMR 1H-NMR (500 MHz, CD3COCD3 + D2O):

δ 3.53 (1H, m, H-5′′), 3.54 (1H, m, H-3″),
3.57 (1H, m, H-4″), 3.74 (1H, dd, J = 12.3, 5.5 Hz, H-6a″),
3.77 (1H, dd, J = 12.3, 2.0 Hz, H-6b″), 4.11
(1H, t, J = 9.0 Hz, H-2″), 4.85 (1H, d, J = 9.9 Hz, H-1″)
6.44 (1H, s, H-8), 6.60 (1H, s, H-3), 6.95
(2H, d, J = 8.6 Hz, H-3′, 5′), 7.85
(2H, d, J = 8.6 Hz, H-2′, 6′)

Carbon-13 NMR 13C-NMR (125 MHz, CD3COCD3 + D2O):

δ 61.7 (C-6″), 70.6 (C-4″), 72.0 (C-2″), 74.5
(C-1″), 79.2 (C-3″), 81.6 (C-5″), 95.3 (C-8),
103.4 (C-3), 104.3 (C-10), 108.7 (C-6), 116.7
(C-3′, 5′), 122.4 (C-1′), 129.0 (C-2′, 6′),
157.7 (C-9), 161.0 (C-5), 162.0(C- 4′),
164.5 (C-7), 165.0 (C-2), 183.1 (C-4)

Other NMR data
MS
Masses of
main fragments 		ESI-MS + m/z 433.1
  This box:   

References

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