Structural determination of cerebrosides isolated from<i>Asterias amurensis</i>starfish eggs using high-energy collision-induced dissociation of sodium-adducted molecules
作者:Taeseong Park、Young Seung Park、Jung-Rae Rho、Young Hwan Kim
DOI:10.1002/rcm.4896
日期:2011.3.15
2‐hydroxy fatty acids and long‐chain sphingoid bases, as well as the sugar moiety polar head group. Each homologous ion series along the fatty acid and aliphatic chain of the sphingoid base was useful for locating the double‐bond positions of both chains and the methyl branching position of the long‐chain base. The N‐fatty acyl portions were primarily long‐chain saturated or monoenoic acids (C16 to C24)
使用溶剂萃取,硅胶柱色谱法和反相高效液相色谱法从海星Asterias amurensis的卵中分离出六种脑苷脂。这项研究表明,使用快速原子轰击(FAB)串联质谱法,可以基于脑钠键合的分子对脑苷的结构进行完全表征。钠加成分子[M + Na] +的高能碰撞诱导解离每个脑苷分子分子中的,都会产生丰富的离子,从而提供有关2-羟基脂肪酸和长链鞘氨醇碱基以及糖部分极性头部基团的信息。沿鞘氨醇碱基的脂肪酸和脂肪族链的每个同源离子序列可用于定位两条链的双键位置和长链碱基的甲基支链位置。的Ñ -脂肪酸酰基部分主要是长链饱和或单烯酸(C16至C24)与α羟基基团。鞘状长链碱基部分是脂族链(C18或C22),具有两个或三个不饱和度,带有或不带有甲基支链。版权所有©2011 John Wiley&Sons,Ltd.