申请人:TAISHO PHARMACEUTICAL CO., LTD.
公开号:US20020156299A1
公开(公告)日:2002-10-24
The present invention relates to compounds which are useful for efficient synthesis of 2-amino-4-oxobicyclo[3.1.0]hexane-2,6-dicarboxylic acids.
The compounds according to the present invention comprise 2-oxobicyclo[3.1.0]hexane-6-carboxylic acid derivatives represented by the formula as follows:
1
[wherein, R
1
represents a hydrogen atom, a C
1
-C
6
alkyl group, a C
3
-C
6
cycloalkyl group, a C
3
-C
6
cycloalkyl C
1
-C
6
alkyl group, an aryl group, an aryl C
1
-C
6
alkyl group, a C
1
-C
6
alkoxy C
1
-C
6
alkyl group, a C
1
-C
6
hydroxyalkyl group, a C
1
-C
6
alkylthio C
1
-C
6
alkyl group, a C
1
-C
6
mercaptoalkyl group, a tetrahydrofuranyl group, or a tetrahydropyranyl group; R
2
and R
3
are identical or different, and each represents a C
1
-C
6
alkyl group, a C
3
-C
6
cycloalkyl group, a C
3
-C
6
cycloalkyl C
1
-C
6
alkyl group, an aryl group, or an aryl C
1
-C
6
alkyl group, or alternatively, R
2
and R
3
together represent —(CH
2
)
n
— (wherein n represents 2 or 3); and Y
1
and Y
2
are identical or different, and each represents a sulfur atom, an oxygen atom, or a nitrogen atom].
本发明涉及化合物,其用于2-氨基-4-氧代双环[3.1.0]己烷-2,6-二羧酸的高效合成。根据本发明的化合物包括以下公式所示的2-氧代双环[3.1.0]己烷-6-羧酸衍生物:1[其中,R1代表氢原子、C1-C6烷基、C3-C6环烷基、C3-C6环烷基C1-C6烷基、芳基、芳基C1-C6烷基、C1-C6烷氧基C1-C6烷基、C1-C6羟基烷基、C1-C6烷硫基C1-C6烷基、C1-C6巯基烷基、四氢呋喃基或四氢吡喃基;R2和R3相同或不同,每个代表C1-C6烷基、C3-C6环烷基、C3-C6环烷基C1-C6烷基、芳基或芳基C1-C6烷基,或者R2和R3一起代表—(CH2)n—(其中n代表2或3);Y1和Y2相同或不同,每个代表硫原子、氧原子或氮原子]。