title: Cerebrosides from Longan Arillus.
abstract: From the pulp of Euphoria longana (Longan Arillus), three cerebroside molecular species have been isolated. Six known cerebrosides, soyacerebrosides I and II, 1-O-beta-D-glucopyranosyl-(2S,3R,4E,8E)-2-(2'-lignoceroylamino)-4,8-octadecadiene-1,3-diol (longan cerebroside I) and its 8Z isomer (longan cerebroside II), momor-cerebroside I, and phytolacca cerebroside, were identified as major components of these cerebroside molecular species. All the cerebrosides were shown to be a mixture of geometrical isomers (8E and 8Z) of sphingosine-type or phytosphingosine-type glucocerebrosides possessing 2-hydroxy fatty acids. The structures of these cerebrosides have been determined on the basis of chemical and spectroscopic evidence.
authors.affiliation: Natural Products Research Institute and College of Pharmacy, Seoul National University, Seoul 110-460, Korea.
authors.forename: Jiyoung
authors.initials: J
authors.lastname: Ryu
authors.forename: Ju Sun
authors.initials: JS
authors.lastname: Kim
authors.forename: Sam Sik
authors.initials: SS
authors.lastname: Kang
mesh_terms: D002554:Cerebrosides / Q000737:chemistry / Q000302:isolation & purification*; D002850:Chromatography, Gel; D005638:Fruit / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D029631:Sapindaceae / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D002554:Cerebrosides