The incorporation of tryptamine, dopamine, N-deacetylisoipecoside, N-deacetylipecoside into alangimarckine, deoxytubulosine and ankorine and of strictosidine and vincoside into alangimarckine and deoxytubulosine in young Alangium lamarckii Thw. (Alangiaceae) has been studied and specific utilisation
Deacetylipecoside synthase (DIS), the enzyme catalyzing the condensation of dopamine and secologanin to form the (R)-epimer of deacetylipecoside, has been purified 570-fold from the leaves of Alangium lamarckii and partially characterized. The isolated enzyme is a single polypeptide with Mr 30,000,
Extracts of Schefflera bodinieri and S. delavayi (Araliaceae), Celastrus angulatus and C. orbiculatus (Celastraceae), Clerodendrum mandarinorum and C. bungei (Verbenaceae), Periploca callophylla and P. forrestii (Asclepiadaceae), Alangium platanifolium (Alangiaceae) and Uncaria rhynchophylla
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