TRICYCLIC DIHYDROFURAN DERIVATIVE, METHOD FOR PRODUCING THE SAME AND AGENT

摘要

PROBLEM TO BE SOLVED: To obtain an excellent inhibitor against the formation of peroxylipid. SOLUTION: This compound is represented by the formula [wherein the ring A is a nonaromatic five-membered or seven-membered nitrogeneous heterocycle which additionally may have a substituent group; the ring B is benzene ring having a substituent group; the ring C is dihydrofuran ring which additionally may have a substituent group; R is hydrogen atom or an acyl group] or its salt.