69721-57-9Relevant academic research and scientific papers
New reagent for oxidative phenol coupling. The transformation of the monocyclic spermine base (S)-dihydroxyverbacine to the bicyclic alkaloid (S,S,S)-aphelandrine by cell free extract of barley seedlings
Nezbedová, Lenka,Hesse, Manfred,Drandarov, Konstantin,Werner, Christa
, p. 4139 - 4141 (2001)
The soluble protein fraction of barley seedlings (Hordeum vulgare, Gramineae) in the presence of O2 stereoselectively catalyzes the intramolecular phenol coupling of the monocyclic spermine base (S)-dihydroxyverbacine to the bicyclic aphelandri
Biomimetic formation of macrocyclic spermine alkaloids
Dimitrov, Vladimir,Geneste, Herve,Guggisberg, Armin,Hesse, Manfred
, p. 2108 - 2118 (2007/10/03)
Dihydroxyverbacine (10), a precursor for oxidative phenol coupling, was obtained via (±)-buchnerine (14), whose synthesis is described. The oxidizing system hemin (ferriprotoporphyrin IX chloride)/H2O2 promoted intramolecular coupling of 10 to give the alkaloids aphelandrine (1), orantine (2), and chaenorpine (7). The alkaloids were identified by on-line coupled HPLC and atmospheric-pressure chemical-ionization (APCI) mass spectrometry.
