ISOLASI DAN KARAKTERISASI SENYAWA TRITERPENOID DARI FRAKSI KLOROFORM KULIT BATANG DURIAN KURA (D. testudinarum Becc.)
Abstract
Satu senyawa pentasiklik triterpenoid (senyawa 1) telah diisolasi dari fraksi kloroform ekstrak EtOH kulit batang tumbuhan durian kura (D. testudinarum Becc.). Senyawa 1 berbentuk padatan amorf berwarna putih sebanyak 16,8 mg. Spektrum NMR-1H dari senyawa 1 (CD3OD, 500 MHz) menunjukkan geseran kimia pada dH (ppm): 0,98 (H-23); 0,77 (H-24); 0,92 (H-25); 1,00 (H-26); 1,27 (H-27); 0,96 (H-29); 1,68 (H-30); 7,86 (17-CO2H); 3,48 (3-OH); 5,52 (H-12). Berdasarkan analisis data NMR-1H dan dibandingkan dengan data NMR-1H yang telah dilaporkan dalam literatur, senyawa tersebut dapat diusulkan sebagai asam oleanolat (Asam 3β-Hidroksiolean-12-en-28-oat).
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2013-04-08
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