Isovitexin

The 2 -0-glucosylahon of vitexin and isovitexin in petals of Silene alba is catalyzed by two different enzymes. Phytochemistry 19 1935-1937. 

Mancini 1988). Flavonoids vary across the ontogenic cycle, with the highest concentration of isovitexin occurring between preflowering and flowering stages. The indole alkaloids are small amounts (up to 0.01%), including harman, harmine, harmaline, and harmalol (Tyler 1994). Mechanisms of Action... 

Isovitexin derivative from plant leaves as a xanthine oxidase inhibitor. Patent-Japan Kokai Tokkyo Koho- HV069 05,238,943 1993 10 pp. 

FIGURE 1.12 Specific fragmentations of the C-glycosylflavones isoorientin and isovitexin. 

Kerscher, F. and Franz, G., Biosynthesis of vitexin and isovitexin enzymatic synthesis of the C-glucosylflavones vitexin and isovitexin with an enzyme preparation from Fagopyrum esculentum M. seedlings. Z. Naturforsck, 42c, 519, 1987. 

C-(4-OH-l-ethyl benzene) isovitexin ( ) 8-C- -OH benzyl isovitexin (5,7,4 -triOH 6-Glc 8-OH-benzyl) Vitexin... 

Hydroxy-1-ethylbenzene derivatives of vitexin and isovitexin (cucumerin A and B, two regioisomers) were studied by H and C NMR analysis with DEPT, TOCSY, and COSY experiments HMBC and NOESY correlations were also used for assignment of the hydro-xyethylbenzene residue. 

Terminalia catappa, Combretaceae, commonly used in the folk medicine in Taiwan, contains several C-glycosylflavones, two of them galloyl esters of vitexin and isovitexin. The isolated compounds were tested for antioxidative activity on Cu " /02-induced low-density lipoprotein peroxidation. IC50 values were 2.1 pM for vitexin derivatives and 4.5 pM for isovitexin derivatives compared to 4.0 pM for probucol chosen as positive control. 

Mahlin, J.A., Jung, K.H., and Schmidt, R.R., Glycosyl imidates, synthesis of flavone C-glycosides vitexin, isovitexin and isoembigenin, Liebigs Ann. Chem., 3, 461, 1995. 

Jatropha podagrica Hooker San Hu You Tong (stem bark) Tetramethylpyrazine, steroids, n-hexacosane, beta-amirine, lupeol palmitate, beta-sitosterol, rutin, flavonoids, quercetin, apigenin, vitexin, isovitexin.57-207 208 This herb is toxic. Detoxicant, hypotensive, neuromuscular and cardiovascular actions, antibacterial, relieve swelling, pain, externally treat snakebite, infection. 

Polygonum orientale L. Shui Hong Cao (Prince s feather) (whole plant) Orientin, vitexin, isovitexin, isoorientin, plastoquinone-9.33 Antibacterial. 

Swertia pseudochinensis Dang Yao (whole plant) Swertiamarin, swertisin, methyl-bellidifolin, homoorentin, methyl-swertianin, isovitexin, bellidifolin, decussatin, swertifrancheside.33 Choleretic, improve hepatic function. Treat acute icteric hepatitis, chronic liver disease. 

N.A. Jutrophine, emetic, purgative oil, diterpene jatrophone, isovitexin, resins, isophytosterol, tannin, cyanidin, apigenin, histamine.145-146 This herb is toxic. A folk remedy for cancer. Treat asthma, constipation, diabetes, diarrhea. It is a disinfectant, laxative. Externally applied to piles and bums. 

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