(57)< Abstract > This invention regards the 7 [karubokishiarukiru or arukeniru] 6 [alkyl or arukeniru] 3 oxo 2,4 jiokisobishikuro [3.2.1] octane and its derivative. Especially, the hydroxyl of the carboxyl group, nitro, amino, amide, azide, oxime, thiol, ether and the thiol ether...