Synthesis and Bioactivity of Novel Bis-heterocyclic Compounds Containing Pyrazole and Oxadiazoline
作者:Jin-Feng Yang、Hong Cao、Hong Liu、Bing-Qi Li、Yan-Mei Ma
DOI:10.1002/jccs.201190039
日期:2011.6
hydrazine (4a∼4e) afford hydrazone compounds containg pyrazolyl (5a∼5e, 6a∼6e, 7a∼7e) in the ethanol. These adducts were refluxed in Ac2O and furnished a series of novel bis‐hetero‐cyclic compounds. (8a∼8e, 9a∼9e, 10a∼10e) via cyclic reaction. The structures of all newly synthesized compounds were established by IR, 1H NMR, MS and elemental analysis. New compounds conducted preliminary tests of antibacterial
起始原料3-芳基-1-苯基-4-甲酰基吡唑(1-3)和4-取代的芳氧基乙酰肼(4a - 4e)的亲核加成反应可得到含吡唑基的5化合物(5a-5e,6a-6e,7a-7e)在乙醇中。这些加合物在Ac 2 O中回流,并提供了一系列新颖的双杂环化合物。(8a〜8e,9a〜9e,10a〜10e)通过循环反应。通过IR,1 H NMR,MS和元素分析确定所有新合成的化合物的结构。新化合物对氧化镰刀菌,黄萎病菌,茄枯萎病菌,瓜(Pychium aphanidermatum),链格孢(Alternaria solani),核盘菌(Sclerotinia sclerotiorum)。结果表明,双杂环化合物(8a〜8e,9a〜9e,10a〜10e)的抑制率明显高于吡唑基(5a〜5e,6a〜6e,7a〜7e)。