申请人:Kao Corporation
公开号:EP1097930A1
公开(公告)日:2001-05-09
The invention discloses a method for the production of a macrocyclic lactone represented by a formula (2), which comprises subjecting a hydroxycarboxylic acid ester represented by a formula (1) to intramolecular esterification reaction.
In the formulae (1) and (2), wherein m is an integer from 5 to 10, n is an integer and wherein the value of the sum of m + n is from 11 to 16, X represents -CH2-, -CH=CH-, -O-, -S- or -NH-, and R represents a hydrocarbon group having from (m + n + 2) to 40 carbon atoms or a group represented by -(AO)pR1 wherein AO represents an alkyleneoxy group having from 2 to 4 carbon atoms, p is the average addition mole number of alkylene oxide and R1 represents a hydrocarbon group having a specified number of carbon atoms so that the total number of carbon atoms of the - (AO)pR1 group becomes from (m + n + 2) to 40.
本发明公开了一种生产由式(2)表示的大环内酯的方法,该方法包括将由式(1)表示的羟基羧酸酯进行分子内酯化反应。
在式(1)和(2)中,其中 m 是 5 至 10 的整数,n 是整数,且 m+n 之和的值为 11 至 16,X 代表-CH2-、-CH=CH-、-O-、-S- 或-NH-,R 代表具有 (m+n+2) 至 40 个碳原子的烃基或由-(AO)pR1 代表的基团,其中 AO 代表具有 2 至 4 个碳原子的亚烷氧基、p 是环氧亚烷基的平均加成摩尔数,R1 代表具有特定数目碳原子的烃基,这样 -(AO)pR1 基团的碳原子总数就从 (m + n + 2) 到 40。