Abexinostat

Abexinostat (INN,[1] formerly PCI-24781) is an experimental drug candidate for cancer treatment.[2] It was developed by Pharmacyclics and licensed to Xynomic. and is in Phase II clinical trials for B-cell lymphoma.[3] Pre-clinical study suggests the potential for treatment of different types of cancer as well.[4][5][6][7]

Abexinostat

Names
IUPAC name 3-[(Dimethylamino)methyl]-N-{2-[4-(hydroxycarbamoyl)phenoxy]ethyl}-1-benzofuran-2-carboxamide
Other names PCI-24781; CRA-024781
Identifiers
CAS Number	783355-60-2 783356-67-2 (HCl)
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL2103863
ChemSpider	9924562
ECHA InfoCard	100.241.399
KEGG	D10060
PubChem CID	11749858
UNII	IYO470654U T1E6TM0SVG (HCl)
CompTox Dashboard (EPA)	DTXSID30229005
InChI InChI=1S/C21H23N3O5/c1-24(2)13-17-16-5-3-4-6-18(16)29-19(17)21(26)22-11-12-28-15-9-7-14(8-10-15)20(25)23-27/h3-10,27H,11-13H2,1-2H3,(H,22,26)(H,23,25) Key: MAUCONCHVWBMHK-UHFFFAOYSA-N InChI=1/C21H23N3O5/c1-24(2)13-17-16-5-3-4-6-18(16)29-19(17)21(26)22-11-12-28-15-9-7-14(8-10-15)20(25)23-27/h3-10,27H,11-13H2,1-2H3,(H,22,26)(H,23,25) Key: MAUCONCHVWBMHK-UHFFFAOYAM
SMILES O=C(NO)c3ccc(OCCNC(=O)c2oc1ccccc1c2CN(C)C)cc3
Properties
Chemical formula	C21H23N3O5
Molar mass	397.431 g·mol^−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Abexinostat exerts its effect as a pan-histone deacetylase inhibitor[8][9] and inhibits RAD51, which is involved in repairing DNA double strand breaks.[10]

References

1. WHO Drug Information, Vol. 25, No. 2, 2011
2. Abexinostat, NCI Cancer Dictionary
3. Abexinostat HCl (PCI-24781), PanHDAC-inhibitor Archived 2013-10-27 at the Wayback Machine, Pharmacyclics
4. Bhalla, S; Balasubramanian, S; David, K; Sirisawad, M; Buggy, J; Mauro, L; Prachand, S; Miller, R; Gordon, LI; Evens, AM (2009). "PCI-24781 induces caspase and reactive oxygen species-dependent apoptosis through NF-kappaB mechanisms and is synergistic with bortezomib in lymphoma cells". Clinical Cancer Research. 15 (10): 3354–65. doi:10.1158/1078-0432.CCR-08-2365. PMC 2704489. PMID 19417023.
5. Lopez, G; Liu, J; Ren, W; Wei, W; Wang, S; Lahat, G; Zhu, QS; Bornmann, WG; McConkey, DJ; Pollock, RE; Lev, DC (2009). "Combining PCI-24781, a novel histone deacetylase inhibitor, with chemotherapy for the treatment of soft tissue sarcoma". Clinical Cancer Research. 15 (10): 3472–83. doi:10.1158/1078-0432.CCR-08-2714. PMID 19417021.
6. Rivera-Del Valle, N; Gao, S; Miller, CP; Fulbright, J; Gonzales, C; Sirisawad, M; Steggerda, S; Wheler, J; Balasubramanian, S; Chandra, J (2010). "PCI-24781, a Novel Hydroxamic Acid HDAC Inhibitor, Exerts Cytotoxicity and Histone Alterations via Caspase-8 and FADD in Leukemia Cells". International Journal of Cell Biology. 2010: 207420. doi:10.1155/2010/207420. PMC 2817379. PMID 20145726.
7. Yang, C; Choy, E; Hornicek, FJ; Wood, KB; Schwab, JH; Liu, X; Mankin, H; Duan, Z (2011). "Histone deacetylase inhibitor (HDACI) PCI-24781 potentiates cytotoxic effects of doxorubicin in bone sarcoma cells". Cancer Chemotherapy and Pharmacology. 67 (2): 439–46. doi:10.1007/s00280-010-1344-7. PMID 20461381.
8. Buggy, JJ; Cao, ZA; Bass, KE; Verner, E; Balasubramanian, S; Liu, L; Schultz, BE; Young, PR; Dalrymple, SA (2006). "CRA-024781: A novel synthetic inhibitor of histone deacetylase enzymes with antitumor activity in vitro and in vivo". Molecular Cancer Therapeutics. 5 (5): 1309–17. doi:10.1158/1535-7163.MCT-05-0442. PMID 16731764.
9. Adimoolam, S; Sirisawad, M; Chen, J; Thiemann, P; Ford, JM; Buggy, JJ (2007). "HDAC inhibitor PCI-24781 decreases RAD51 expression and inhibits homologous recombination". Proceedings of the National Academy of Sciences of the United States of America. 104 (49): 19482–7. doi:10.1073/pnas.0707828104. PMC 2148315. PMID 18042714.
10. "NCI Drug Dictionary". National Cancer Institute.