Synthesis of certain alkenyl purines and purine analogs as inhibitors of tumor necrosis factor alpha (TNFα)
作者:T. Sudhakar Rao、Joshua O. Ojwang、Hélène B. Marshall、Ganapathi R. Revankar
DOI:10.1002/jhet.5570340138
日期:1997.1
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。