Diterpenoid-diterpenoid terbaharu daripada akar Croton hirtus (Euphorbiaceae)

The root of Croton hirtus was collected at Tanjung Sepat, Banting for study of its chemical compounds. This sample was dried before being ground and extracted using the methanol solvent at room temperature for three days yielding 18.25 gram of crude extract. The crude extracts obtained were analysed using thin layer chromatography (TLC) then fractionated via vacuum column chromatography (VLC) and proceed the isolation using radial chromatography (RC) to get the pure compounds. The pure compounds obtained were elucidated by nuclear magnetic resonance (NMR), Fourier Transform Infrared (FT-IR) and mass spectroscopy to confirm their structures and from that analysis, the compounds were identified as two new compounds naming (-)-5,8-dihydroxyjatrophan-3-one (1) and (+)-14,16,17-trihydroxykauran-1-on (2) with total weight 4.9 mg and 4.5 mg respectively. This two compound were reported for this time on this genus.