LQQ

6-ACETYL-8-CYCLOPENTYL-5-METHYL-2-[(5-PIPERAZIN-1-YLPYRIDIN-2-YL)AMINO]PYRIDO[2,3-D]PYRIMIDIN-7(8H)-ONE

LQQ as a free ligand exists in 2 entries. Examples include: 5L2I 2EUF

Find related ligands: Stereoisomers Similar ligands Chemical Structure Search

View summary at Ligand Expo



Chemical Component Summary

Name6-ACETYL-8-CYCLOPENTYL-5-METHYL-2-[(5-PIPERAZIN-1-YLPYRIDIN-2-YL)AMINO]PYRIDO[2,3-D]PYRIMIDIN-7(8H)-ONE
Identifiers8-cyclopentyl-6-ethanoyl-5-methyl-2-[(5-piperazin-1-ylpyridin-2-yl)amino]pyrido[6,5-d]pyrimidin-7-one
FormulaC24 H29 N7 O2
Molecular Weight447.53
TypeNON-POLYMER
Isomeric SMILESCC(=O)c1c(C)c2cnc(Nc3ccc(cn3)N3CCNCC3)nc2n(C2CCCC2)c1=O
InChIInChI=1S/C24H29N7O2/c1-15-19-14-27-24(28-20-8-7-18(13-26-20)30-11-9-25-10-12-30)29-22(19)31(17-5-3-4-6-17)23(33)21(15)16(2)32/h7-8,13-14,17,25H,3-6,9-12H2,1-2H3,(H,26,27,28,29)
InChIKeyAHJRHEGDXFFMBM-UHFFFAOYSA-N

Chemical Details

Formal Charge0
Atom Count62
Chiral Atom Count0
Chiral Atomsn/a
Bond Count66
Aromatic Bond Count17
Leaving Atomsn/a

Drug Info: DrugBank

DrugBank IDDB09073 Different stereochemistry
NamePalbociclib
Groupsapproved
DescriptionPalbociclib is an oral, reversible, selective, small-molecule inhibitor of CDK4 and CDK6 indicated in combination with letrozole for the treatment of postmenopausal women with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer as initial endocrine-based therapy for their metastatic disease. CDK4 and CDK6 along with their regulatory partner cyclin D1 play a key role in regulating the G1- to S-phase cell-cycle transition via regulation of phosphorylation of the retinoblastoma (Rb) protein. Inhibition of these proteins leads to reduced phosphorylation of Rb, inhibition of downstream signalling, and increased tumor growth arrest. Palbociclib received an accelerated approval from the Food and Drug Administration on February 3, 2015.
Synonyms6-acetyl-8-cyclopentyl-5-methyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}pyrido[2,3-d]pyrimidin-7(8H)-one
SaltsPalbociclib Isethionate
Brand NamesIbrance
IndicationPalbociclib is indicated in combination with letrozole for the treatment of postmenopausal women with estrogen receptor (ER)-positive, human epidermal growth factor receptor 2 (HER2)-negative advanced breast cancer as initial endocrine-based therapy for their metastatic disease. This indication is approved under accelerated approval based on progression-free survival (PFS). Continued approval for this indication may be contingent upon verification and description of clinical benefit in a confirmatory trial.
PharmacologyTreatment of breast cancer cell lines with the combination of palbociclib and antiestrogens leads to decreased retinoblastoma protein (Rb) phosphorylation resulting in reduced E2F expression and signaling and increased growth arrest compared to treatment with each drug alone. In vitro treatment of ER-positive breast cancer cell lines with the combination of palbociclib and antiestrogens leads to increased cell senescence, which was sustained for up to 6 days following drug removal. In vivo studies using a patient-derived ER-positive breast cancer xenograft model demonstrated that the combination of palbociclib and letrozole increased the inhibition of Rb phosphorylation, downstream signaling and tumor growth compared to each drug alone.
Mechanism of actionPalbociclib is an oral, reversible, selective, small-molecule inhibitor of CDK4 and CDK6. CDK4 and CDK6 along with their regulatory partner cyclin D1 play a key role in regulating the G1- to S-phase cell-cycle transition via regulation of phosphorylation of the retinoblastoma (Rb) protein.
Route of administrationOral
Categories
  • Antineoplastic Agents
  • Antineoplastic and Immunomodulating Agents
  • Chemical Actions and Uses
  • Cyclin-Dependent Kinases, antagonists & inhibitors
  • Cytochrome P-450 CYP3A Inhibitors
ATC-CodeL01XE33
AHFS-Code10:00
CAS number571190-30-2
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682