is described. The synthesis of compounds 2a-d was accomplished by the functional group transformation reaction, whereas the synthesis of 4a-8a and 4b-8b was performed by the alkylation of the sodium salt of the heterocycles with alkenyl bromides. These alkenyl derivatives prepared as congeners of pentoxifylline (methylxanthine) were evaluated for their anti-tumor necrosis factor a activity in human
腺嘌呤2a,b,7-脱氮杂
腺嘌呤2c,d,
2-氨基嘌呤4a,b和5a,b,
4-氨基吡唑啉的
2-戊烯-1-基和3-甲基-
2-丁烯-1-基衍
生物的制备描述了[3,4- d ]
嘧啶7a,b和7-
氨基-v-三唑-[4,5- d ]
嘧啶8a-10a和8b-10b。化合物2a-d的合成通过官能团转化反应完成,而4a-8a和4b-8b的合成通过用烯基
溴化物将杂环的钠盐烷基化来进行。评估了这些作为
己酮可可碱(甲基
黄嘌呤)同源物制备的烯基衍
生物在人单核细胞白血病细胞中的抗肿瘤坏死因子a活性。在该测定中,仅化合物7a和7b显示出显着的活性和不良的毒性概况。在外周血单核细胞中,化合物7a和7b以剂量依赖性方式抑制肿瘤坏死因子α的产生。