Abstract:
:Truncated N(6)-substituted-(N)-methanocarba-adenosine derivatives with 2-hexynyl substitution were synthesized to examine parallels with corresponding 4'-thioadenosines. Hydrophobic N(6) and/or C2 substituents were tolerated in A3AR binding, but only an unsubstituted 6-amino group with a C2-hexynyl group promoted high hA2AAR affinity. A small hydrophobic alkyl (4b and 4c) or N(6)-cycloalkyl group (4d) showed excellent binding affinity at the hA3AR and was better than an unsubstituted free amino group (4a). A3AR affinities of 3-halobenzylamine derivatives 4f-4i did not differ significantly, with Ki values of 7.8-16.0 nM. N(6)-Methyl derivative 4b (Ki = 4.9 nM) was a highly selective, low efficacy partial A3AR agonist. All compounds were screened for renoprotective effects in human TGF-β1-stimulated mProx tubular cells, a kidney fibrosis model. Most compounds strongly inhibited TGF-β1-induced collagen I upregulation, and their A3AR binding affinities were proportional to antifibrotic effects; 4b was most potent (IC50 = 0.83 μM), indicating its potential as a good therapeutic candidate for treating renal fibrosis.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Nayak A,Chandra G,Hwang I,Kim K,Hou X,Kim HO,Sahu PK,Roy KK,Yoo J,Lee Y,Cui M,Choi S,Moss SM,Phan K,Gao ZG,Ha H,Jacobson KA,Jeong LSdoi
10.1021/jm4015313subject
Has Abstractpub_date
2014-02-27 00:00:00pages
1344-54issue
4eissn
0022-2623issn
1520-4804journal_volume
57pub_type
杂志文章abstract::The natural dibenzylbutyrolactone type lignanolide (-)-arctigenin (2), an inhibitor of human immunodeficiency virus type-1 (HIV-1) replication in infected human cell systems, was found to suppress the integration of proviral DNA into the cellular DNA genome. In the present study 2 was tested with purified HIV-1 integr...
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