L. Nezbedova et al., Dihydroxyverbacine is the terminal precursor in the biosynthesis of aphelandrine and orantine, TETRAHEDR L, 41(41), 2000, pp. 7859-7862
A microsomal-bond cytochrome P-450 enzyme system has been discovered in the
roots of Aphelandra squarrosa that is responsible for the stereospecific i
ntramolecular phenol coupling of (S)-dihydroxy-verbacine to aphelandrine. T
he biogenesis of the closely related alkaloids orantine (ephedradine A) and
ephedradines B, C and D should follow a similar biogenetic pattern. (C) 20
00 Elsevier Science Ltd. All rights reserved.