2VV9:
reference: Imidazole piperazines: SAR and development of a potent class of cyclin-dependent kinase inhibitors with a novel binding mode., Finlay MR, Acton DG, Andrews DM, Barker AJ, Dennis M, Fisher E, Graham MA, Green CP, Heaton DW, Karoutchi G, Loddick SA, Morgentin R, Roberts A, Tucker JA, Weir HM, Bioorg Med Chem Lett. 2008 Aug 1;18(15):4442-6. Epub 2008 Jun 12. PMID: 18617397

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