Novel retinoid derivatives and methods for producing said compounds and anti-cancer pharmaceutical composition comprising said compounds

摘要

The present invention relates to a novel retinoid derivative compound represented by the formula I: wherein X, R<1>, R<2 >and R<3 >are as defined herein or pharmaceutically acceptalbe salts thereof. Also, the present invention relates to processes for producing the compound of the formula I and to an anti-cancer composition comprising the compound of the formula I. The compound of the formula I according to the present invention exerts high anti-cancer effects while not causing undesirable side effects.