Biochemical Journal · 1962 · 49 citations · 9 references
The wood of the locust tree (Robinia p8eudacacia L.) consists mainly of yellow-brown heartwood with a narrow margin of white sapwood, the heartwood being well known for its durability and resistance to insects. The heartwood was shown to contain 7,3',4',5'-tetrahydroxyflavonol (robinetin), by Schmid & Pietsch (1931), Brass & Kranz (1932) and Schmid & Tadros (1932), and also the corresponding flavanonol, (+ )-dihydrorobinetin, by Freudenberg & Hartmann (1954). (+ )-Di- hydrorobinetin apparently occurs mainly in parti- ally racemized form, and Freudenberg & Roux {1954) converted it by catalytic hydrogenation into ( ) -7,3',4',5' -tetrahydroxyflavan -3,4 -diol.
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