To provide a new analog of taxol known as an anticancer agent and producible in a high yield without using a reagent having safety problem such as heavy metal.

This compound is expressed by the formula I [X is H or a (substituted)methyl; Y and Z are each Z, OR5 (R5 is H, an alkyl, etc.), etc.; R1 is H, OR6 (R6 is R5), etc.; R2 is H, OR7 (R7 is R5), etc.; R3 is H or OR8 (R8 is R5)], e.g. the compound of the formula II. The compound of the formula I can be produced by reacting a compound of the formula III (R4 is an alkoxyalkyl or a trialkylsilyl; W is an eliminable group) with an alkali metal amide, treating the resultant compound of the formula IV with an acid to obtain a compound of the formula V and reacting the product with a base.