the bischalcone: 2,8‐bis((furan‐2‐yl)methylene)cyclooctanone 3. Compound 3 was allowed to react with different organic reagents through 1,2 and 1,4 cycloaddition reactions to afford the cyclooctane‐fused heterocyclic compounds 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 17a, 17b, 17c in good yields. The structures of all the new compounds were elucidated and deduced from their elemental analyses as well
呋喃-2-甲醛1与
环辛酮2的Claisen-Schmidt缩合反应平稳地产生了双
缩醛:2,8-双((
呋喃-2-基)亚甲基)
环辛酮3。化合物3被允许通过1,2-和1,4-环加成反应与不同的
有机试剂反应以得到
环辛烷稠合
杂环化合物4,5,6,7,8,9,10,11,12,13,14和17a,17b,17c丰产。从其元素分析和光谱数据中阐明并推导了所有新化合物的结构。