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dc.contributor.author Ngameni, B.
dc.contributor.author Ngadjui, B.
dc.contributor.author Folefoc, G.
dc.contributor.author Watchueng, J.
dc.contributor.author Abegaz, B.
dc.date.accessioned 2008-10-27T10:54:57Z
dc.date.available 2008-10-27T10:54:57Z
dc.date.issued 2003
dc.identifier.citation Ngameni, B. et al (2003) Diprenylated chalcones and other constituents from the twigs of Dorstenia barteri var. subtriangularis, Phytochemistry, Vol. 65, pp. 427-432 en
dc.identifier.issn 0031-9422
dc.identifier.uri http://hdl.handle.net/10311/258
dc.description.abstract The twigs of Dorstenia barteri var. subtriangularis yielded three diprenylated chalcones: ( )-3-(3,3-dimethylallyl)-50-(2-hydroxy-3- methylbut-3-enyl)-4,20,40-trihydroxychalcone, (+)-3-(3,3-dimethylallyl)-40,50-[2000-(1-hydroxy-1-methylethyl)-dihydrofurano]-4,20- dihydroxychalcone and 3,4-(600,600-dimethyldihydropyrano)-40,50-[2000,-(1-hydroxy-1-methylethyl)-dihydrofurano]-20-hydroxychalcone for which the names bartericins A, B and C, respectively, are proposed. Stipulin, b-sitosterol and its 3-b-D-glucopyranosyl derivative were also isolated. The structures of these secondary metabolites were determined on the basis of spectroscopic analysis, especially, NMR spectra in conjunction with 2D experiments, COSY, HMQC and HMBC. The structural relationship of bartericins B and C was further established by the chemical cyclization of one to the other. en
dc.language.iso en en
dc.publisher Elsevier Ltd; www.elsevier.com/locate/phytochem en
dc.subject Dorstenia barteri var. subtriangularis en
dc.subject Moraceae en
dc.subject Twigs en
dc.subject Isolation en
dc.subject Prenylated chalcones en
dc.subject Bartericins A, B and C en
dc.title Diprenylated chalcones and other constituents from the twigs of Dorstenia barteri var. subtriangularis en
dc.type Article en


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