A NEW PRENYLATED FLAVANONE FROM THE ARIAL PART OF Orthosiphon stamineus

https://doi.org/10.22146/ijc.21661

M. Amzad Hossain(1*), Atiqur Rahman(2), Sun Chul Kang(3)

(1) Chemistry Division, Atomic Energy Centre, GPO Box 164, Ramna, Dhaka-1000
(2) Department of Biotechnology, College of Engineering, Daegu University, Kyungsan 712-714; Department of Applied Chemistry & Chemical Technology, Islamic University, Kushtia-7003
(3) Department of Biotechnology, College of Engineering, Daegu University, Kyungsan 712-714
(*) Corresponding Author

Abstract


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 compound is reported for the first time from this plant.

 

Keywords: Orthosiphon stamineus, prenylated flavanone, flavonoids

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DOI: https://doi.org/10.22146/ijc.21661

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Indonesian Journal of Chemisty (ISSN 1411-9420 / 2460-1578) - Chemistry Department, Universitas Gadjah Mada, Indonesia.

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