申请人:Ube Industries, Ltd.
公开号:US05717124A1
公开(公告)日:1998-02-10
A process for preparing an oxyglutaric acid ester derivative of the formula: ##STR1## in which each of R.sup.1 and R.sup.2 is C.sub.1-5 alkoxy, C.sub.1-7 aralkyloxy, C.sub.7-9 halogenated aralkyloxy or phenyl, R.sup.4 is a hydroxyl-protecting group, and R.sup.5 is C.sub.1-10 alkyl which may have a substituent, comprises the steps of reacting a methyl phosphonate derivative or methyl phosphine oxide derivative with an oxyglutaric acid mono-ester to give a reaction product which comprises an oxyglutaric acid derivative having a phosphorus-containing group and a pentenedioic acid mono-ester (by-product), removing the pendenedioic acid mono-ester from the reaction product to isolate the oxyglutaric acid derivative, and converting the isolated oxyglutaric acid derivative into the oxyglutaric acid ester derivative. A process for obtaining an optically active oxyglutaric acid ester derivative is also disclosed.
一种制备氧戊二酸酯衍生物的方法,其化学式为:##STR1##其中R.sup.1和R.sup.2分别为C.sub.1-5烷氧基、C.sub.1-7芳基烷氧基、C.sub.7-9卤代芳基烷氧基或苯基,R.sup.4为羟基保护基,R.sup.5为C.sub.1-10烷基,可能带有取代基,包括以下步骤:将甲基膦酸酯衍生物或甲基膦氧化物衍生物与氧戊二酸单酯反应,得到包含磷含基团的氧戊二酸衍生物和戊二烯二酸单酯(副产物)的反应产物,将戊二烯二酸单酯从反应产物中去除,以分离出氧戊二酸衍生物,然后将分离出的氧戊二酸衍生物转化为氧戊二酸酯衍生物。还公开了一种获得光学活性氧戊二酸酯衍生物的方法。