Vitexin (data page)

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This page provides supplementary chemical data on vitexin.

Material Safety Data Sheet[edit]

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 MSDS Search Engine, and follow its directions.

Spectral data[edit]

UV-Vis
Lambda-max UV : 335, 271 nm
Extinction coefficient log ε: 4.08, 4.15
IR
Major absorption bands  ? cm−1
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+H]+ m/z 433.1

Reference: Yi-Pei Lin, Tai-Yuan Chen, Hsiang-Wen Tseng, Mei-Hsien Lee and Shui-Tein Chen (2009). "Neural cell protective compounds isolated from Phoenix hanceana var. formosana". Phytochemistry. 70 (9): 1173–1181. doi:10.1016/j.phytochem.2009.06.006. PMID 19628235.