Benzothiophene compound, alternative autophagy inducer and anticancer agent comprising the compound as an active ingredient, and method for screening a compound having anticancer activity
It has been found that efficient screening for a compound having anticancer activity can be achieved by selecting a compound having activity to induce alternative autophagy using, as an index, formation of fluorescent bright spots due to aggregation of a lysosomal protein to which a fluorescent protein is attached in cells expressing the lysosomal protein. In addition, it has been found that a benzothiophene compound represented by the following general formula (1) has alternative autophagy-inducing activity and anticancer activity: