Riviciclib hydrochloride

• CAT Number: I009050
• CAS Number: 920113-03-7
• Molecular Formula: C21H21Cl2NO5
• Molecular Weight: 438.30
• Purity: ≥95%
• Synonyms: 2-(2-chlorophenyl)-5,7-dihydroxy-8-[(2R,3S)-2-(hydroxymethyl)-1-methylpyrrolidin-3-yl]chromen-4-one;hydrochloride
• InChI: InChI=1S/C21H20ClNO5.ClH/c1-23-7-6-12(14(23)10-24)19-15(25)8-16(26)20-17(27)9-18(28-21(19)20)11-4-2-3-5-13(11)22;/h2-5,8-9,12,14,24-26H,6-7,10H2,1H3;1H/t12-,14+;/m1./s1
• InChIKey: OOVTUOCTLAERQD-OJMBIDBESA-N
• SMILES: CN1CCC(C1CO)C2=C(C=C(C3=C2OC(=CC3=O)C4=CC=CC=C4Cl)O)O.Cl

Riviciclib hydrochloride (P276-00) is a potent cyclin-dependent kinase (CDK) inhibitor, which inhibits CDK9-cyclinT1, CDK4-cyclin D1, and CDK1-cyclinB with IC50s of 20 nM, 63 nM, and 79 nM, respectively[1][2].
Riviciclib hydrochloride (P276-00) shows antitumor activity on cisplatin-resistant cells[3].
Riviciclib hydrochloride (1.5-5 μM; 72 hours) shows no detectable cells in G1 and G2 in promyelocytic leukemia cells and arrest of cells in G1 in synchronized human non-small cell lung carcinoma (H-460) and human normal lung fibroblast (WI-38) cells[3].
Riviciclib hydrochloride (3-24 hours; 1.5 μM) reduces cyclin D1, Cdk4, and Rb levels in H-460 cells. Rb (retinoblastoma) phosphorylation at Ser780 decrease at 3 h[2].
Riviciclib hydrochloride shows activity in human cancer cell lines, such as colon carcinoma, osteosarcomal, cervical carcinoma, and bladder carcinoma cells[2].
Riviciclib hydrochloride (administered i.p.; 35 kg/mg daily for 10 days, in human xenograft mode with severe combined immunodeficient mice) shows significant inhibition in the growth of human colon carcinoma HCT-116 xenograft[3].
Riviciclib hydrochloride (administered via i.p.; 50 mg/kg once daily; 30 mg/kg twice daily for 18 treatments, in human xenograft mode with severe combined immunodeficient mice) significantly inhibited growth[3].

Reference

[1]. Roskoski R Jr,Cyclin-dependent protein kinase inhibitors including palbociclib as anticancer drugs.Pharmacol Res. 2016 May;107:249-275.
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[2]. Joshi KS, et al. In vitro antitumor properties of a novel cyclin-dependent kinase inhibitor, P276-00. Mol Cancer Ther. 2007 Mar;6(3):918-25.
 [Content Brief]

[3]. Joshi KS,et al. P276-00, a novel cyclin-dependent inhibitor induces G1-G2 arrest, shows antitumor activity on cisplatin-resistant cells and significant in vivo efficacy in tumor models. Mol Cancer Ther. 2007 Mar;6(3):926-34.
 [Content Brief]