New compounds from the seeds of Embelia ribes Burm.
Phytochemical investigation of the seeds of Embelia ribes Burm. resulted in the isolation of three new compounds identified as 3-(4"-hydroxyoctadecanyloxy)-p-quinonyl-5-methylene-8-(10-pentanyloxy)-p-quinone (embelinol) (1), n-pentacosanyl-n-nonadeca-7'-en-9'-alpha-ol-1'-oate (embeliaribyl ester) (2) and 1,2,4,5-tetrahydroxy 3-undecanyl benzene (embeliol) (3) along with the known compound 2,5-dihydroxy-3-undecyl-2,5-cyclohexadiene-1,4-dione (embelin) (4). Their structures have been established on the basis of spectral data analyses and chemical reactions.
Hao
K
K
Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Jamia Hamdard, New Delhi, India.
Ali
M
M
Siddiqui
A W
AW
D002855:Chromatography, Thin Layer; D031645:Embelia / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D012639:Seeds / Q000737:chemistry; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared