Flavonoid Prenylation Patterns

Aspects on substitution patterns of prenylated flavonoids and their derivatives including the frequency of occurrence have been discussed in detail. Thus, these aspects will not be... 

The structural diversity of metabolites belonging to the different flavonoid classes, including their oxygenation patterns, glycosylation, sulfation, acylation, methylation, and/or prenylation are best illustrated in a recent text,9 as well as in several earlier monographs.10 14 These different substitution reactions, which are catalyzed by substrate-specific and position-oriented enzymes, contribute to the enormous diversity of flavonoid compounds that amount to >5000 chemical structures in Nature and hence, to the wide spectrum of functional roles they play in... 

Of the many phytochemical and biological reports on flavanones, the following are a selection of new compounds. A flavanone of unusual oxygenation pattern has been identified in the leaves of New Zealand spinach (Tetragonia expansa). The compound is 7,8-dimethoxyflavanone. Amongst several new prenyl-flavonoids obtained from the roots of Marshallia grandiflora is 8-prenyl-5,7,4 -trihydroxyflavanone. ... 

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