Isolation and elucidation of flavonoid constituents from the twigs of Bouea oppositifolia (Roxb.) Meisn.

Bouea oppositifolia (Roxb.) Meisn., commonly known as Burmese or Marian plum from the family of Anacardiaceae, is an erect, evergreen, perennial tree which grows up to 32 m high with a trunk diameter of 75 cm and grey-green light brown to purple-brown fissured bark [1]. The species is indigenous to Southern China, Indochina, Myanmar, Thailand, Andaman Islands, the Malay Peninsula, Sumatra and Java; Borneo. The taxon of B. oppositifolia, is an extremely rare wild mango [2]. Traditionally, the leaf, root and fruit parts of this plant are used for their anticephalalgia, antifebrile and expectorant activities [3]. The investigation of the secondary metabolites from the twigs part of B. oppositifolia using vacuum liquid chromatography and repetitive radial chromatography techniques successfully led to the isolation of nine known flavonoid constituents ([Fig. 1]) which consist of four flavanones which are eriodictyol (1), naringenin (2), liquiritigenin (3) and butin (4), one chalcone, isoliquiritigenin (5), three flavanols, taxifolin (6), garbanzol (7), fustin (8) and one aurone, sulfuretin (9). The structures of the compounds were determined on the basis of analysis of spectral evidence and comparison with the published data. These compounds were isolated for the first time from this plant.

Fig. 1 Structure of compounds 1-9.

Funding Fundamental Research Grant Scheme: FRGS/1/2022/STG04/UITM/02/24, Ministry of Higher Education, Malaysia.

 

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Conflict of Interest

The authors declare no conflict of interest.

• References

• 1 Seidemann J.. World spice plants. Springer; Berlin-Heidelberg: 2005. 131.
• 2 Ikram E.H.K., Eng K.H., Jalil A.M.M., Ismail A., Idris S., Azlan A., Mokhtar R.A.M.. Antioxidant capacity and total phenolic content of Malaysian underutilized fruits. Journal of Food Composition and Analysis 2009; 22 (05) 388-393

Publikationsverlauf

Artikel online veröffentlicht:
16. November 2023