Potent Inhibition of Influenza Sialidase by a Benzoic Acid Containing a 2-Pyrrolidinone Substituent
作者:Venkatram R. Atigadda、Wayne J. Brouillette、Franco Duarte、Shoukath M. Ali、Yarlagadda S. Babu、Shanta Bantia、Pooran Chand、Naiming Chu、John A. Montgomery、David A. Walsh、Elise A. Sudbeck、James Finley、Ming Luo、Gillian M. Air、Graeme W. Laver
DOI:10.1021/jm980707k
日期:1999.7.1
1-(4-carboxy-2-guanidinophenyl)pyrrolidin-2-one (8) was only a modest inhibitor of sialidase, the introduction of a hydroxymethyl or bis(hydroxymethyl) substituent at the C5' position of the 2-pyrrolidinone ring resulted in inhibitors (9 and 12, respectively) with low micromolar activity. Crystal structures of these inhibitors in complex with sialidase demonstrated that the substituents at the 5'-position of the 2-pyrrolidinone
基于铅化合物4-(N-乙酰氨基)-3-胍基苯甲酸(BANA 113),其以2.5 microM的Ki抑制甲型流感唾液酸酶,设计了几种新型的唾液酸唾液酸酶芳香抑制剂。在这项研究中,BANA 113的N-乙酰基被2-吡咯烷酮环取代,该环的部分设计目的是为引入空间定向的侧链提供可能,该侧链可能与4-,5-和/或-相互作用唾液酸酶的6个亚位点。虽然母体结构1-(4-羧基-2-胍基苯基)吡咯烷-2--2-(8)只是适度的唾液酸酶抑制剂,但在2的C5'位置引入了羟甲基或双(羟甲基)取代基-吡咯烷酮环产生的微摩尔活性低的抑制剂(分别为9和12)。这些抑制剂与唾液酸酶复合的晶体结构表明2-吡咯烷酮环的5'-位的取代基在酶的4-和/或5-亚位相互作用。用疏水的3-戊基氨基取代12中的胍导致结合力大大增强,从而产生针对甲型流感病毒唾液酸酶的IC50约为50 nM的抑制剂(14),尽管对乙型流感病毒唾液酸酶的抑