Novel 5-membered cyclic compounds, process for production thereof, and pharmaceutical use thereof

摘要

Novel 5-alkylidene-4-substituted-2-cyclopentenones and 5-(1-hydroxy-aliphatic hydrocarbon)-4-substituted-2-cyclopentenones. These novel cyclopentenones and 5-alkylidene-3-hydroxy-4-substituted cyclopentanones have a pharmaceutical activity for treatment of tumors.