A process for producing a 2-oxobicyclo[3.1.0]hex-3-ene-6-carboxylic acid derivative represented by a formula:
1
(wherein R
1
represents a hydrogen atom, a C
1-6
alkyl group, a C
3-6
cycloalkyl group, a C
3-6
cycloalkyl C
1-6
alkyl group, a C
1-6
alkyl group substituted with a substituted or unsubstituted phenyl group, a C
1-6
alkoxy C
1-6
alkyl group, a C
1-6
hydroxyalkyl group, a C
1-6
alkylthio C
1-6
alkyl group, a C
1-6
mercaptoalkyl group, or a substituted or unsubstituted phenyl group)
characterized by reacting a 4-hydroxy-2-oxobicyclo[3.1.0]hexane-6-carboxylic acid derivative represented by a formula:
2
(wherein R
1
has the same meaning as described above, and R
2
represents a hydrogen atom or a protective group of a hydroxyl group)
in the presence of an acid or a base.
A process for producing the compounds which are useful for efficient syntheses of 2-amino-3-fluorobicyclo[3.1.0]hexane-2,6-dicarboxylic acids is provided.
一种制备2-氧代双环[3.1.0]己-3-烯-6-
羧酸衍
生物的方法,该衍
生物由公式1表示(其中R1代表氢原子、C1-6烷基、C3-6环烷基、C3-6环烷基C1-6烷基、取代或未取代苯基取代的C1-6烷基、C1-6烷氧基C1-6烷基、C1-6羟基烷基、C1-6烷
硫基C1-6烷基、C1-6巯基烷基或取代或未取代苯基)特征在于在酸或碱存在下,将由公式2表示的
4-羟基-2-氧代双环[3.1.0]己烷-6-
羧酸衍
生物与之反应(其中R1具有上述相同的含义,R2代表氢原子或羟基的保护基)。提供了一种用于有效合成2-
氨基-3-
氟双环[3.1.0]己烷-2,6-二
羧酸的化合物的方法。