Chemical constituents of Chirita halongensis Kiew & T.H.Nguyen collected in Ha Long Bay, Quang Ninh province, Viet Nam

Abstract

The Chemical investigation of the whole plant of Chirita halongensis Kiew & T.H.Nguyen collected in Ha Long bay, Quang Ninh province led to the isolation and structural elucidation of nine compounds, including one anthraquinone, three triterpenoids and five phenylethanoid glycosides. Three of them: oleanolic acid, decaffeoylacteoside and β-hydroxy acteoside have been found for the first time in Chirita genus. Their structures were elucidated by mass, NMR spectroscopies and comparison with published data. It is the first report on chemical constituents of this species.