7-亚甲基-5-氮杂螺[2.4]庚烷-4-酮

7-azadispiro[2.0.2⁴.2³]octan-8-one

7-methylene-4-oxo-5-azaspiro[2.4]heptane-5-sulfonyl chloride

顺,顺-1,5-环辛二烯

dispiro[cyclopropane-1,2'-bicyclo[2.2.0]hexane-3',1''-cyclopropane]