Lupeol esters from the twig bark of Japanese pear (Pyrus serotina Rehd.) cv. Shinko.
Five new lupeol esters, lup-20(29)-ene-3beta-yl eicosanoate, docosanoate, tetracosanoate, hexacosanoate and octacosanoate, were isolated as a mixture from the twig bark of Japanese pear (Pyrus serotina Rehd.) cv. Shinko, together with lupeol and epifriedelinol. Their structures were determined by spectral analyses including 2D-NMR experiments.
Tomosaka
H
H
Department of Chemistry and Materials Science, Gunma National College of Technology, Maebashi, Japan. tomosaka@chem.gunma-ct.ac.jp
Koshino
H
H
Tajika
T
T
Omata
S
S
D004952:Esters / Q000302:isolation & purification*; D008401:Gas Chromatography-Mass Spectrometry; D009682:Magnetic Resonance Spectroscopy; D019685:Rosales / Q000737:chemistry*
D004952:Esters