title: Novel Chromone Alkaloids from Schumanniophyton magnificum.
abstract: Six chromone alkaloids were isolated from the root bark of SCHUMANNIOPHYTON MAGNIFICUM Harms. Three of these were identified as the known alkaloids schumanniophytine, schumannificine and N-methylschumannificine. The other three alkaloids are novel and were named isoschumanniophytine, anhydroschumannificine and N-methylanhydroschumannificine. In addition it was seen that the N-methylschumannificine isolated consisted of a mixture of two isomers and an alternative structure for schumanniophytine has been proposed.
authors.affiliation: Pharmacognosy Research Laboratories, Department of Pharmacy, Chelsea College, University of London, Manresa Road, London SW3 6LX, U.K.
authors.forename: P J
authors.initials: PJ
authors.lastname: Houghton
authors.forename: Y
authors.initials: Y
authors.lastname: Hairong