Abstract:
Chatenaytrienins-1,-2 and -3, muridienins-3 and -4 and muricadienin were characterized by tandem mass spectrometry (MS/MS) in a mixture of natural precursors of annonaceous acetogenins from Annona muricata. Chatenaytrienin-1, -2, -3 and -4 were then isolated from A. nutans and fully characterized by spectroscopic methods (NMR, MS) and by chemical and enzymatic oxidative processes. Isolation of these trienes confirmed the postulated biosynthetic pathway leading to the acetogenins.