Pracinostat

Pracinostat

Names
IUPAC name (E)-3-(2-Butyl-1-(2-(diethylamino)ethyl)-1H-benzo[d]imidazol-5-yl)-N-hydroxyacrylamide
Other names Pracinostat
Identifiers
CAS Number	929016-96-6
3D model (Jmol)	Interactive image
ChemSpider	25027185
PubChem	49855250
InChI InChI=1S/C20H30N4O2/c1-4-7-8-19-21-17-15-16(10-12-20(25)22-26)9-11-18(17)24(19)14-13-23(5-2)6-3/h9-12,15,26H,4-8,13-14H2,1-3H3,(H,22,25)/b12-10+ Key: JHDKZFFAIZKUCU-ZRDIBKRKSA-N InChI=1/C20H30N4O2/c1-4-7-8-19-21-17-15-16(10-12-20(25)22-26)9-11-18(17)24(19)14-13-23(5-2)6-3/h9-12,15,26H,4-8,13-14H2,1-3H3,(H,22,25)/b12-10+ Key: JHDKZFFAIZKUCU-ZRDIBKRKBK
SMILES CCCCC1=NC2=C(N1CCN(CC)CC)C=CC(=C2)/C=C/C(=O)NO
Properties
Chemical formula	C20H30N4O2
Molar mass	358.49 g·mol^−1
Density	1.1±0.1 g/cm^3
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Pracinostat (SB939) is an orally bioavailable, small-molecule histone deacetylase (HDAC) inhibitor based on hydroxamic acid with potential anti-tumor activity characterized by favorable physicochemical, pharmaceutical, and pharmacokinetic properties.

Activity

Pracinostat selectively inhibits HDAC class I,II,IV without class III and HDAC6 in class IV,^[1] but has no effect on other Zn-binding enzymes, receptors, and ion channels. It accumulates in tumor cells and exerts a continuous inhibition to histone deacetylase,resulting in acetylated histones accumulation, chromatin remodeling, tumor suppressor genes transcription, and ultimately, apoptosis of tumor cells.^[2]

Clinical medication

Clinical studies suggests that pracinostat has potential best pharmacokinetic properties when compared to other oral HDAC inhibitors.^[3] In March 2014, pracinostat has granted Orphan Drug for acute myelocytic leukemia (AML) and for the treatment of T-cell lymphoma by the Food and Drug Administration.

References

1. "In vitro enzyme activity of SB939 and SAHA". 22 Aug 2014.
2. "The oral HDAC inhibitor pracinostat (SB939) is efficacious and synergistic with the JAK2 inhibitor pacritinib (SB1518) in preclinical models of AML". Blood Cancer Journal. doi:10.1038/bcj.2012.14.
3. Veronica Novotny-Diermayr; et al. (March 9, 2010). "SB939, a Novel Potent and Orally Active Histone Deacetylase Inhibitor with High Tumor Exposure and Efficacy in Mouse Models of Colorectal Cancer". Mol Cancer Ther. doi:10.1158/1535-7163.MCT-09-0689.