作者:Bonaventure T Ngadjui、Etienne Dongo、Helene Tamboue、Kouam Fogue、Berhanu M Abegaz
DOI:10.1016/s0031-9422(98)00324-0
日期:1999.4
Investigation of the twigs of Dorstenia mannii gave 6,8-diprenyl-5,7,3'4'-tetrahydroxyflavanone and four new prenylated flavanones, named dorsmanins E-H and characterized as 5,6-7,8-bis-(2,2-dimethylchromano)-3',4'-dihydroxyflavanone, 7,8-[2 "-(1-hydroxy-1-methylethyl)-dihydrofurano]-6-prenyl-5,3',4'-trihydroxyflavanone, 6,7-[2 "-(1-hydroxy-1-methylethyl)dihydrofurano]-8-prenyl-5,3',4'-trihydroxyflavanone and 6-prenyl-8-(2-hydroxy-3-methylbut-3-enyl)-5,7,3',4'-tetrahydroxyflavanone, respectively, on the basis of spectral analysis and chemical evidence for the chromano derivative. (C) 1999 Elsevier Science Ltd. All rights reserved.