Notizen: On the mode of incorporation of shikimic acid into 2-hydroxy-1,4-naphthoquinone (lawsone)

Abstract

The labelled ring atoms of shikimic acid were incorporated into the benzene moiety and not the quinone ring of naptho-quinone. The labelled carboxyl group was transformed into one or both of the keto groups of the quinone ring. Para-hydroxybenzoic acid was not a precursor of napthoquinone.