Chemical constituents of Murraya siamensis: Three coumarins
and their anti-tumor promoting effect.
-3-carboxylic acid, ellagic acid, esculetin, 4hydroxycoumarin, scopoletin, and umbelliferone) were purchased from Sigma-Aldrich (St.
Then, epoxypropoxy coumarin
(EPC) was conjugated to hydrophobically modified poly (vinyl alcohol)--epoxypropoxy coumarin
conjugate (HmPVA) by the reaction between the epoxy groups of EPC and the hydroxyl group of HmPVA (Fig.
Warfarin's monopoly on oral anticoagulation therapy, as well as that of other vitamin K antagonists derived from coumarin
, is over.
against A aegypti (CHAITHONG et al.
Ruta species are sources of diverse classes of natural products such as flavonoids, alkaloids, essential oils, coumarins
, phenols, saponins lignans, and triterpenes, with biological activities including antifungal, antioxidant, phytotoxic, abortive, depressant, antidotal and anti-inflammatory (Mohhr, 1982; Juan, 1984; Raghav et al, 2006; Kuzovkina et al.
Strawberries are rich in coumarins
- which prevent the formation of cancer-causing nitrosamines in the body - vitamin C and phenols, which have strong antioxidant properties.
, which are a precursor of some anticoagulants.
PC contains coumarins
, flavonoids, and merotepenes such as psoralen, isopsoralen, neobavaislfoavone, bovachin, bavaislfoavone, bavachromene, psoralidin, corylifolinin, bavachinin, bavachalcone.
The inhibition of conjugated diene formation may be related to hydroperoxide interacting polyphenol compounds like flavones, coumarins
, chalcones and cinnamic acids which may neutralise hydroperoxides by the reduction process (Tiwari 2004).
According to Naturex, Fraxinus excelsior has been reported to contain primarily coumarins
, secoiridoids and phenylethanoids.
17,18) Like their chemical cousin warfarin (Coumadin[R]), coumarins
inhibit platelet aggregation, and may thus help prevent blood clots.