Wael M Abdel-Mageed, Ali A El-Gamal, Shaza M Al-Massarani, Omer A Basudan, Farid A Badria, Maged S Abdel-Kader, Adnan J Al-Rehaily, Hanan Y Aati
A new lupane caffeoyl ester, lup-20(29)-ene 3β-caffeate-30-al ( 7 ), and a new oleanane-type triterpene, 3 β -hydroxyolean-13(18)-en-12-one ( 17 ), were isolated from the aerial parts of Dobera glabra (Forssk), along with ten known triterpenes, including seven lupane-type lupeol ( 1 ), 30-nor-lup-3 β -ol-20-one ( 2 ), ∆1 -lupenone ( 3 ), lup-20(29)-en-3 β ,30-diol ( 4 ), lupeol caffeate ( 5 ), 30-hydroxy lup-20(29)-ene 3 β -caffeate ( 6 ), and betunaldehyde ( 8 ); three oleanane-type compounds were also identified, comprising δ -amyrone ( 15 ), δ -amyrin ( 16 ), and 11-oxo- β -amyrin ( 18 ); together with six sterols, comprising β -sitosterol ( 9 ), stigmasterol ( 10 ), 7 α -hydroxy- β -sitosterol ( 11 ), 7 α -hydroxy-stigmasterol ( 12 ), 7-keto- β -sitosterol ( 13 ), and 7-keto-stigmasterol ( 14 )...
January 8, 2021: Plants (Basel, Switzerland)