The present invention provides an efficient synthetic method of α-ketol unsaturated fatty acid having a double bond at a β-position to the ketone group thereof. It comprises the steps of: preparing compound (4) by reacting monosubstituted acetylene (2) with epoxide (3); and preparing α -ketol unsaturated fatty acid (1) from said compound (4) as shown in Reaction Formula 1:
wherein R1 represents an alkyl group of 1-18 carbon atoms or an aliphatic hydrocarbon group of 2-18 carbon atoms having 1-5 double or triple bonds at given positions; R2 represents a protecting group for a hydroxyl group; R3 represents a protecting group for a carboxyl group; R is identical to R1 or, when R1 has one or more triple bonds, represents an aliphatic hydrocarbon group in which each triple bond of R1 is converted to a double bond; and A represents an alkylene group of 1-18 carbon atoms.
本发明提供了一种α-
酮醇不饱和
脂肪酸的高效合成方法,该
脂肪酸的
酮基在β位有双键。它包括以下步骤:通过单取代炔(2)与
环氧化物(3)反应制备化合物(4);以及从所述化合物(4)制备如反应式 1 所示的 α-
酮醇不饱和
脂肪酸(1):
其中 R1 代表 1-18 个
碳原子的烷基或 2-18 个
碳原子的
脂肪族烃基,在给定位置上有 1-5 个双键或三键;R2 代表羟基的保护基团;R3 代表羧基的保护基团;R 与 R1 相同,或者当 R1 有一个或多个三键时,代表
脂肪族烃基,其中 R1 的每个三键转化为双键;以及 A 代表 1-18 个
碳原子的亚烷基。