Chemical constituents of brown rice grain (Oryza sativa)

초록

One new compound 3,7,11.15,19-pentamethyl-9 alpha.,10 alpha,11 alpha, 17 alpha.,18 alpha-pentahydroxy-n-tetracpsam-1-oxy-p hydroxycaffeoate (orzyaterpenyl caffeoate) (1),together with three known fatty acids linoleic acid, stearic acid myristic acid were isolated and identified from the rice grain Oryza sativa. The structure of the acid and in.vristic acid itere isolated and identifiedfrom the rice grain of Oryza sativa. The structure of the new compound was elucidated by 1D and 2D NMR spectroscopic techniques (H-1-(HCOSY)-H-1. H-1-C-13 HETCOR) aided by EI-MS, and IR spectra.

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