7H-Pyrrolo[2,3-d]pyrimidin-4-amine-Based Inhibitors of Calcium- Dependent Protein Kinase 1 Have Distinct Inhibitory and Oral Pharmacokinetic Characteristics Compared with 1H-Pyrazolo[3,4-d]pyrimidin-4-amine-Based Inhibitors

被引:6
作者
Vidadala, Rama S. R. [1 ]
Golkowski, Martin [5 ]
Hulverson, Matthew A. [2 ,3 ]
Choi, Ryan [2 ,3 ]
McCloskey, Molly C. [2 ,3 ]
Whitman, Grant R. [2 ,3 ]
Huang, Wenlin [4 ]
Arnold, Samuel L. M. [2 ,3 ]
Barrett, Lynn K. [2 ,3 ]
Fan, Erkang [4 ]
Merritt, Ethan A. [4 ]
Van Voorhis, Wesley C. [2 ,3 ]
Ojo, Kayode K. [2 ,3 ]
Maly, Dustin J. [1 ]
机构
[1] Univ Washington, Dept Chem, 36 Bagley Hall,Box 351700, Seattle, WA 98195 USA
[2] Univ Washington, Dept Med, Div Allergy & Infect Dis, 750 Republican St, Seattle, WA 98109 USA
[3] Univ Washington, CERID, 750 Republican St, Seattle, WA 98109 USA
[4] Univ Washington, Dept Biochem, 1705 NE Pacific St, Seattle, WA 98195 USA
[5] Univ Washington, Dept Pharmacol, 1959 NE Pacific St,Box 357280, Seattle, WA 98195 USA
基金
美国国家卫生研究院;
关键词
Cryptosporidium parvum; calcium-dependent protein kinase 1 inhibitors; 7H-pyrrolo[2,3-d]pyrimidin-4-amine; 1H-pyrazolo[3,4-d]pyrimidin-4-amine; IMMUNOSUPPRESSED MICE; SELECTIVE INHIBITORS; CRYPTOSPORIDIOSIS; TARGETS; GONDII; BURDEN; THERAPEUTICS; INFECTION; THERAPY; DISEASE;
D O I
10.1021/acsinfecdis.7b00224
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Selective inhibitors of Cryptosporidium calcium dependent protein kinase 1 (CpCDPK1) based on the 1H-pyrazolo[3,4-d]pyrimidin-4-amine (pyrazolopyrimidine, PP) scaffold are effective in both in vitro and in vivo models of cryptosporidiosis. However, the search for distinct safety and pharmacokinetic (PK) properties has motivated our exploration of alternative scaffolds. Here, we describe a series of 7H-pyrrolo[2,3-d]pyrimidin-4-amine (pyrrolopyrimidine, PrP)-based analogs of PP CpCDPK1 inhibitors. Most of the PrP-based inhibitors described potently inhibit the CpCDPK1 enzyme, demonstrate no toxicity against mammalian cells, and block proliferation of the C. parvum parasite in the low micromolar range. Interestingly, certain substituents that show reduced CpCDPK1 potency when displayed from a PP scaffold provided notably enhanced efficacy in the context of a PrP scaffold. PK studies on these paired compounds show that some PrP analogs have distinct physiochemical properties compared with their PP counterparts. These results demonstrate that inhibitors based on a PrP scaffold are distinct therapeutic alternatives to previously developed PP inhibitors.
引用
收藏
页码:516 / 522
页数:13
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