Prenylated phenylpropanoids

In star anise, the presence of a prenyl moiety in the phenylpropanoids plays an important role in antitumour-promoting activity. Hence, the prenylated phenylpropanoids might be valuable as a potential cancer chemopreventive agent (Padmashree et al., 2007). 

Ngadjui, B.T. et al., Prenylated flavones and phenylpropanoid derivatives from roots of Dorstenia psilurus. Phytochemistry, 48, 733, 1998. 

The phenolics include anthocyanins, anthraquinones, benzofurans, chromones, chromenes, coumarins, flavonoids, isoflavonoids, lignans, phenolic acids, phenylpropanoids, quinones, stilbenes and xanthones. Some phenolics can be very complex in structure through additional substitution or polymerization of simpler entities. Thus xanthones can be prenylated and flavonoids, lignans and other phenolics can be glycosylated. Condensed tannins involve the polymerization of procyaninidin or prodelphinidin monomers and hydrolysable tannins involve gallic acid residues esterified with monosaccharides. As detailed in this review, representatives of some major classes of plant-derived phenolics are potent protein kinase inhibitors. 

A mixture of volatiles from carrot Daucus carota, Apiaceae) is responsible for oviposition by females of the carrot fly Psila rosae). Among these are the phenylpropanoids. E-methyleugenol, -asarone, a prenylated coumarin, osthol (31), bergapten (18), xanthotoxin (19), and an acetylenic compound, falcarindiol (Harbome, 1986). No single component of the mixture is responsible for the behavior of the fly. 

T9 = Simple aromatic and/or prenylated aromatic esters, nor derivatives (e.g., concneorine/norconcneorine, 3P-merresectines B-F for details see Table 3.6) TIO = Phenylpropanoid esters (e.g., 3P-caffeoyloxytropane, 3P-feruloyloxytropane, 3p-sinapoyloxytropane)... 

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