New prenylflavans from Cyperus conglomeratus.
In addition to luteolin and its 7-methyl ether, the CH2Cl2-MeOH (1:1) extract of Cyperus conglomeratus afforded two new prenylflavans identified as 7,3'-dihydroxy-5,5'-dimethoxy-8-prenylflavan and 5,7,3'-trihydroxy-5'-methoxy-8-prenylflavan. The structures were established by CIMS, 1H-NMR, 13C-NMR, H-H COSY, HMQC, HMBC and DEPT analysis.
Abdel-Razik
Ayman F
AF
Natural Products Chemistry Department, National Research Centre, Dokki 12622, Cairo, Egypt. aymanfarag2001@yahoo.com
Nassar
Mahmoud I
MI
El-Khrisy
Ezzel-Din A
ED
Dawidar
Abdel-Aziz M
AA
Mabry
Tom J
TJ
D029786:Cyperus / Q000737:chemistry*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D047311:Luteolin / Q000302:isolation & purification
C507794:5,7,3'-trihydroxy-5'-methoxy-8-prenylflavan; C507795:7,3'-dihydroxy-5,5'-dimethoxy-8-prenylflavan; D005419:Flavonoids; D047311:Luteolin