SPECTROSCOPICALSTUDYOF AN ETHER FRACTIONISOLATE FROM STEAM BARK OF" JATI" (Tectona grandls, L)

ABSTRACT This research is aimed to primarily study the spectroscopy of ether fraction of from Jati wood (T. grandis, L). The stem bark of T.grandis, L was firstly extracted undergoes a ranux in methanol solvent. Further, the dried methanol crude extract was extracted with diethyl ether and moreover...

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Main Author: Perpustakaan UGM, i-lib
Format: Article
Published: [Yogyakarta] : Universitas Gadjah Mada 2009
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Summary:ABSTRACT This research is aimed to primarily study the spectroscopy of ether fraction of from Jati wood (T. grandis, L). The stem bark of T.grandis, L was firstly extracted undergoes a ranux in methanol solvent. Further, the dried methanol crude extract was extracted with diethyl ether and moreover separated its chemical constituents by using of column chromatography using degraded mixtures of n-hexane - ethyl acetate from 9:1 to 7:3. After a final column chromatography from the E fraction, a white needles crystal with a melting point of 295 - 297.5 °C was resulted. This results was then confirmed undergoes a spectroscopic analysis including UV, FTIR, H-NMR, and Mass spectroscopy to get an acid of 3{3-hydroxy-20(29)-lupen-28-oic or commonly known as betulinic acid. Keywords: betulinic acid, spectroscopy,primarily stud