Synthesis of the Glycosidic Precursor of Isomeric Marmelo Lactones, Volatile Components of the Quince Fruit,<i>Cydonia oblonga</i>
作者:Hiroki SHIMIZU、Takeshi KITAHARA
DOI:10.1271/bbb.66.743
日期:2002.1
The glucosidic precursor of marmelo lactones was synthesized by employing a common intermediate which had been used for the synthesis of the glucosidic precursor of marmelo oxides. The synthesis was performed by modifying the former procedure. Monochloroacetyl was adopted to protect both the glucose and aglycon hydroxyl groups for selective transesterification in the presence of the glycosyl ester
Isolation of a glucosidic precursor of isomeric marmelo lactones from quince fruit
作者:Peter Winterhalter、Andrea Lutz、Peter Schreier
DOI:10.1016/s0040-4039(00)79762-0
日期:1991.7
The β-D-glucopyranoside of 2,7-dimethyl-8-hydroxy-4(E),6(E)-octa- dienoic acid (1 a) was isolated from quince (CydoniaoblongaMill.) juice as naturalprecursor of the important aroma compounds, marmelo lactones 2 a/b, and characterized as its pentaacetate 1 b.
从木瓜(Cydonia oblonga Mill。)汁中分离出2,7-二甲基-8-羟基-4(E),6(E)-八烯二酸(1a)的β-D-吡喃葡萄糖苷,作为其天然前体。重要的香气化合物,marmelo内酯2 a / b,其五乙酸酯1 b为特征。