Synthesis and antimalarial and antituberculosis activities of a series of natural and unnatural 4-methoxy-6-styryl-pyran-2-ones, dihydro analogues and photo-dimers
作者:Stephen T. McCracken、Marcel Kaiser、Helena I. Boshoff、Peter D.W. Boyd、Brent R. Copp
DOI:10.1016/j.bmc.2011.12.053
日期:2012.2
and activity against M. tuberculosis, P. falciparum, L. donovani, Trypanosoma brucei rhodesiense and Trypanosoma cruzi. Of the styryl-pyranones, natural product 3 and non-natural styrene and naphthalene substituted examples 13, 18, 21, 22 and 23 exhibited antimalarial activity (IC50 <10 μM) with selectivity indices (SI) >10. Δ7 Dihydro analogues were typically less active or lacked selectivity. Head-to-head
先前的研究已确定 3,6-二烷基-4-羟基-吡喃-2-one 海洋微生物代谢物假吡喃素 A 和 B 是结核分枝杆菌和一系列热带疾病的适度生长抑制剂,包括恶性疟原虫和杜氏利什曼原虫. 为了扩大此类化合物对传染病的构效关系,合成了天然产物和天然产物样 4-甲氧基-6-苯乙烯基-吡喃-2-酮和催化还原实例的子集. 此外,研究了几种 4-甲氧基-6-苯乙烯基-吡喃-2-酮的光化学反应性,产生了头对头和头对尾环丁烷二聚体以及不对称阿尼巴二聚体 A-型二聚体。所有化合物的细胞毒性和抗活性进行了评估结核分枝杆菌,恶性疟原虫,杜氏利什曼原虫,锥虫布氏罗得西亚和克氏锥虫。苯乙烯基吡喃酮,天然产物3和非天然苯乙烯和萘置换例13,18,21,22和23(显示出抗疟疾活性IC 50 <用选择性指数(SI)10μM10)>。Δ 7二氢类似物通常活性较低或缺乏选择性。头对头和头对尾光二聚体5和34对几种寄生生物表现出2