Evaluation of Aminohydantoins as a Novel Class of Antimalarial Agents
摘要:
Given the threat of drug resistance, there is an acute need for new classes of antimalarial agents that act via a unique mechanism of action relative to currently used drugs. We have identified a set of druglike compounds within the Tres Cantos Anti-Malarial Set (TCAMS) which likely act via inhibition of a Plasmodium aspartic protease. Structure-activity relationship analysis and optimization of these aminohydantoins demonstrate that these compounds are potent nanomolar inhibitors of the Plasmodium aspartic proteases PM-II and PM-IV and likely one or more other Plasmodium aspartic proteases. Incorporation of a bulky group, such as a cyclohexyl group, on the aminohydantion N-3 position gives enhanced antimalarial potency while reducing inhibition of human aspartic proteases such as BACE. We have identified compound 8p (CWHM-117) as a promising lead for optimization as an antimalarial drug with a low molecular weight, modest lipophilicity, oral bioavailability, and in vivo antimalarial activity in mice.
A thiazoline derivative represented by Formula (I):
wherein R is a cyclic hydrocarbon group which may be substituted, or a heterocyclic group which may be substituted; X is a bond or a divalent chain hydrocarbon group which may be substituted; X′ is a bond or —N(R
5
)—; Y is a divalent hydrocarbon group which may be substituted; Y′ is a bond or —C(═O)—; ring A is a nitrogen-containing heterocycle which may be substituted; Z
1
and Z
3
are each independently a bond or a divalent chain hydrocarbon group which may be substituted; Z
2
is a bond or —N(R
6
)—; and B is a group represented by the formula:
which is useful as a therapeutic drug for thrombosis, is provided.
A thiazoline derivative represented by Formula (I):
wherein R is a cyclic hydrocarbon group which may be substituted, or a heterocyclic group which may be substituted; X is a bond or a divalent chain hydrocarbon group which may be substituted; X' is a bond or -N(R5)-; Y is a divalent hydrocarbon group which may be substituted; Y' is a bond or -C(=O)-; ring A is a nitrogen-containing heterocycle which may be substituted; Z1 and Z3 are each independently a bond or a divalent chain hydrocarbon group which may be substituted; Z2 is a bond or -N(R6)-; and B is a group represented by the formula:
which is useful as a therapeutic drug for thrombosis, is provided.
式 (I) 所代表的噻唑啉衍生物:
其中 R 是可被取代的环烃基或可被取代的杂环基;X 是键或可被取代的二价链烃基;X'是键或-N(R5)-;Y 是可被取代的二价烃基;Y'是键或-C(=O)-; 环 A 是可被取代的含氮杂环; Z1 和 Z3 各自独立地是键或可被取代的二价链烃基; Z2 是键或-N(R6)-; 以及 B 是由式表示的基团:
本发明提供了一种可作为血栓形成治疗药物的药物。
US7534887B2
申请人:——
公开号:US7534887B2
公开(公告)日:2009-05-19
Evaluation of Aminohydantoins as a Novel Class of Antimalarial Agents
作者:Marvin J. Meyers、Micky D. Tortorella、Jing Xu、Limei Qin、Zhengxiang He、Xingfen Lang、Wentian Zeng、Wanwan Xu、Li Qin、Michael J. Prinsen、Francis M. Sverdrup、Christopher S. Eickhoff、David W. Griggs、Jonathan Oliva、Peter G. Ruminski、E. Jon Jacobsen、Mary A. Campbell、David C. Wood、Daniel E. Goldberg、Xiaorong Liu、Yongzhi Lu、Xin Lu、Zhengchao Tu、Xiaoyun Lu、Ke Ding、Xiaoping Chen
DOI:10.1021/ml400412x
日期:2014.1.9
Given the threat of drug resistance, there is an acute need for new classes of antimalarial agents that act via a unique mechanism of action relative to currently used drugs. We have identified a set of druglike compounds within the Tres Cantos Anti-Malarial Set (TCAMS) which likely act via inhibition of a Plasmodium aspartic protease. Structure-activity relationship analysis and optimization of these aminohydantoins demonstrate that these compounds are potent nanomolar inhibitors of the Plasmodium aspartic proteases PM-II and PM-IV and likely one or more other Plasmodium aspartic proteases. Incorporation of a bulky group, such as a cyclohexyl group, on the aminohydantion N-3 position gives enhanced antimalarial potency while reducing inhibition of human aspartic proteases such as BACE. We have identified compound 8p (CWHM-117) as a promising lead for optimization as an antimalarial drug with a low molecular weight, modest lipophilicity, oral bioavailability, and in vivo antimalarial activity in mice.