申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0576834A3
公开(公告)日:1995-01-11
In the present invention, an optically active cis type 1,2-diol derivative of the following formula (I) is produced by reacting a cis type 1,2-diol derivative of the formula (I) with a carboxylic acid derivative of the formula (II) in the presence of a lipase:
wherein R1 and R2 independently represent hydrogen atom or an alkyl group, X represents a halogen atom, a nitro group, a cyano group, an alkyl group, a haloalkyl group, or a phenyl group, and n represents an integer of from 0 to 5; R3 represents a C1 - C10 alkyl group or an aryl group, and R4 represents a hydrogen atom, a C1 - C5 alkyl group, a C2 - C4 alkenyl group, or COR3.The cis type means that the bond between the cyclopentane ring and the hydroxy group and the bond between the cyclopentane ring and the benzyl group reside in the same direction as that portrayed on the paper.The optically active cis type 1,2-diol derivative is used as an intermediate for producing an optically active cis type azole derivative of the formula (VII).
在本发明中,通过在脂肪酶存在下将公式(I)的顺式1,2-二醇衍生物与公式(II)的羧酸衍生物反应,制备了以下公式(I)的光学活性顺式1,2-二醇衍生物:
其中,R1和R2独立表示氢原子或烷基,X表示卤素原子,硝基,氰基,烷基,卤代烷基或苯基,n表示0到5的整数;R3表示C1-C10烷基或芳基,R4表示氢原子,C1-C5烷基,C2-C4烯基或COR3。
顺式类型表示环戊烷环与羟基之间的键和环戊烷环与苯甲基之间的键在纸上的方向相同。
该光学活性顺式1,2-二醇衍生物用作制备公式(VII)的光学活性顺式唑类衍生物的中间体。