A NEW PRENYLATED FLAVANONE FROM THE ARIAL PART OF Orthosiphon stamineus

M. Amzad Hossain, Atiqur Rahman, Sun Chul Kang
2010 Indonesian Journal of Chemistry  
Phytochemical investigations on the chloroform extract of the arial part of Orthosiphon stamineus resulted in isolation of one new prenylated compound 5,7-dimethoxy-3,4′-dihydroxy-3′,8-di-C-prenylflavanone together with four known flavonoids compounds, sinensetin, eupatorin, 5,6,7,4¢-tetramethoxyflavone and 3-hydroxy-5,6,7,4¢-tetramethoxyflavone. The structures were deduced on basis of different analytical methods such as UV, IR, 1H-NMR, 13C-NMR, DEPT, COSY, HMBQ and GC-MS. The prenylated
more » ... he prenylated compound is reported for the first time from this plant. Keywords: Orthosiphon stamineus, prenylated flavanone, flavonoids
doi:10.22146/ijc.21661 fatcat:imd4gytjdfd3hfqhgt4jkiuf6e