ented by general formula (3) (wherein R1, R2, Y, and symbol * are as defined above).[9] The optically active azole-methyl ketone according to Item [8], wherein R1 is a methyl group.[10] The optically active azole-methyl ketone according to Item [9], wherein R2 is a silyl protective group.[11] An optically active azole-methyl alcohol derivative represented by general formula (5) (wherein R1, R5, R6