The present invention provides a method for producing an optically active β-hydroxy ester compound represented by the general formula:
wherein
R
1
represents an optionally substituted hydrocarbon group and the like,
R
2
represents a nitrogen-containing heterocyclic group different from R
1
, which is represented by the general formula:
wherein the ring may be substituted and the like,
R
3
represents an optionally substituted hydrocarbon group and the like,
R
4
and R
5
represent, the same or different, a hydrogen atom, a halogen atom and the like,
the symbol “*” represents an optically active center, which comprises reacting in the presence of a cinchona alkaloid and the like a compound represented by the general formula:
wherein R
1
and R
2
are as defined above with a compound represented by the general formula:
wherein R
3
, R
4
and R
5
are as defined above, and X is a halogen atom.
                            本发明提供一种制备光学活性β-羟基酯化合物的方法,所述化合物由下述通式表示:其中,R1表示可选取代的碳氢基团等,R2表示不同于R1的含氮杂环基团,其由下述通式表示:其中,环可能被取代等,R3表示可选取代的碳氢基团等,R4和R5表示相同或不同的氢原子、卤素原子等,“*”符号表示光学活性中心,该方法包括在
奎宁生物碱等存在下将下述通式表示的化合物与下述通式表示的化合物反应:其中,R1和R2如上所定义,R3、R4和R5如上所定义,X为卤素原子。