NU2058 - CAS 161058-83-9
Catalog number: 161058-83-9
Category: Inhibitor
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Molecular Formula:
C12H17N5O
Molecular Weight:
247.3
COA:
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Targets:
CDK
Description:
NU2058 is a potent CDK inhibitor. which has CDK2 IC(50)=17 microM and CDK1 IC(50)=26 microM.
Purity:
0.98
Synonyms:
NU2058; NU 2058; NU-2058; O(6)-Cyclohexylmethylguanine.
MSDS:
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InChIKey:
MWGXGTJJAOZBNW-UHFFFAOYSA-N
InChI:
InChI=1S/C12H17N5O/c13-12-16-10-9(14-7-15-10)11(17-12)18-6-8-4-2-1-3-5-8/h7-8H,1-6H2,(H3,13,14,15,16,17)
Canonical SMILES:
C1CCC(CC1)COC2=NC(=NC3=C2NC=N3)N
1.Searching for cyclin-dependent kinase inhibitors using a new variant of the cope elimination.
Griffin RJ;Henderson A;Curtin NJ;Echalier A;Endicott JA;Hardcastle IR;Newell DR;Noble ME;Wang LZ;Golding BT J Am Chem Soc. 2006 May 10;128(18):6012-3.
beta-Piperidinoethylsulfides are oxidized by m-chloroperbenzoic acid to intermediates containing both N-oxide and sulfone functions. These undergo a Cope-type elimination to a vinylsulfone that can be captured by amines to afford beta-aminoethylsulfones. When a beta-aminoethylsulfone group is linked to the 4-position of a phenyl group attached at N-2 of O6-cyclohexylmethylguanine, the resulting derivatives are inhibitors of the cyclin-dependent kinase CDK2. One of the most potent inhibitors (IC50 = 45 nM) contained a N-3-hydroxypropyl group on the aminoethylsulfonyl substituent. The crystal structure of this inhibitor bound to CDK2/cyclin A was determined and shows an unusual network of hydrogen bonds. The synthetic methodology developed can be utilized in multiple-parallel format and has numerous potential applications in medicinal chemistry.
2.EmbR2, a structural homologue of EmbR, inhibits the Mycobacterium tuberculosis kinase/substrate pair PknH/EmbR.
Molle V;Reynolds RC;Alderwick LJ;Besra GS;Cozzone AJ;Fütterer K;Kremer L Biochem J. 2008 Mar 1;410(2):309-17.
EmbR is a transcriptional regulator that is phosphorylated by the cognate mycobacterial STPK (serine/threonine protein kinase) PknH. Recent studies demonstrated that PknH-dependent phosphorylation of EmbR enhances its DNA-binding activity and activates the transcription of the embCAB genes encoding arabinosyltransferases, which participate in arabinan biosynthesis. In the present study, we identified a genomic region of 4425 bp, which is present in Mycobacterium tuberculosis CDC1551, but absent from M. tuberculosis H37Rv, comprising the MT3428 gene, which is homologous with embR. Homology modelling of the MT3428 gene product illustrated its close relationship (56% identity) to EmbR, and it was hence termed EmbR2. In marked contrast with EmbR, EmbR2 was not phosphorylated by PknH, although it is a substrate of other M. tuberculosis kinases, including PknE and PknF. Tryptophan fluorescence emission of EmbR2 was monitored in the presence of three different PknH-derived phosphopeptides and demonstrated that EmbR2 binds to at least two of the threonine sites known to undergo autophosphorylation in PknH. We observed that the capacity of EmbR2 to interact physically with PknH without being phosphorylated was a result of EmbR2-mediated inhibition of kinase activity: incubation of PknH with increasing concentrations of EmbR2 led to a dose-response inhibition of the autokinase activity, similarly to O6-cyclohexylmethylguanine, a known inhibitor of eukaryotic cyclin-dependent kinases.
3.Therapeutic potential of CDK inhibitor NU2058 in androgen-independent prostate cancer.
Rigas AC;Robson CN;Curtin NJ Oncogene. 2007 Dec 6;26(55):7611-9. Epub 2007 Jun 18.
Antiandrogens are initially effective in controlling prostate cancer (CaP), the second most common cancer in men, but resistance, associated with the loss of androgen-regulated cell cycle control, is a major problem. At present there is no effective treatment for androgen-independent prostate cancer (AIPC). Cellular proliferation is driven by cyclin-dependent kinases (CDKs) with kinase inhibitors (for example, p27) applying the breaks. We present the first investigation of the therapeutic potential of CDK inhibitors, using the guanine-based CDK inhibitor NU2058 (CDK2 IC(50)=17 microM, CDK1 IC(50)=26 microM), in comparison with the antiandrogen bicalutamide (Casodex) in AIPC cells. A panel of AIPC cells was found to be resistant to Casodex-induced growth inhibition, but with the exception of PC3 (GI(50)=38 microM) and CWR22Rv1 (GI(50)=46 microM) showed similar sensitivity to NU2058 (GI(50)=10-17 microM) compared to androgen-sensitive LNCaP cells (GI(50)=15 microM). In LNCaP cells and their Casodex-resistant derivative, LNCaP-cdxR, growth inhibition by NU2058 was accompanied by a concentration-dependent increase in p27 levels, reduced CDK2 activity and pRb phosphorylation, a decrease in early gene expression and G1 cell cycle phase arrest in both cell lines.
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CAS 161058-83-9 NU2058

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