Three isoflav-3-enes and a 2-arylbenzofuran from the root bark of Erythrina burttii.
From the root bark of Erythrina burttii three isoflav-3-enes, 7,4'-dihydroxy-2'-methoxy-6-(1",1"-dimethylallyl)isoflav-3-ene (trivial name, burttinol-A), 4'-hydroxy-2'-methoxy-2",2"-dimethylpyrano[5",6":8,7]isoflav-3-ene (trivial name, burttinol-B), 7,4'-dihydroxy-2'-methoxy-8-(3",3"-dimethylallyl)isoflav-3-ene (trivial name, burttinol-C), and 2-arylbenzofuran, 6,4'-dihydroxy-2'-methoxy-5-(1",1"-dimethylallyl)-2-arylbenzofuran (trivial name, burttinol-D) were isolated. In addition, the known compounds, abyssinone V-4'-methyl ether, bidwillol A, calopocarpin, erybraedin A, erythrabyssin II, isobavachalcone, phaseollidin and phaseollin were identified. The structures were determined on the basis of spectroscopic evidence.
Yenesew
Abiy
A
Department of Chemistry, University of Nairobi, PO Box 30197, Nairobi, Kenya.
Midiwo
Jacob O
JO
Guchu
Salome M
SM
Heydenreich
Matthias
M
Peter
Martin G
MG
D001572:Benzofurans / Q000737:chemistry / Q000302:isolation & purification*; D004895:Erythrina / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D018517:Plant Roots / Q000737:chemistry; D013056:Spectrophotometry, Ultraviolet
D001572:Benzofurans; D007529:Isoflavones