The invention provides a compound of the invention, which is a compound of formula A-X-L-B, or a salt thereof, as well as compositions comprising a compound of the invention, and therapeutic methods that include the administration of a compound of the invention. The compounds of the invention are useful as therapeutic agents for the treatment of diseases such as cancer.
Dual Inhibitors of Inosine Monophosphate Dehydrogenase and Histone Deacetylases for Cancer Treatment
作者:Liqiang Chen、Daniel Wilson、Hiremagalur N. Jayaram、Krzysztof W. Pankiewicz
DOI:10.1021/jm070864w
日期:2007.12.27
Mycophenolic acid (MPA), an inhibitor of IMP-dehydrogenase (IMPDH), is used worldwide in transplantation. Recently, numerous studies showed its importance in cancer treatment. Consequently, MPA entered clinical trials in advanced multiple myeloma patients. Suberoylanilide hydroxamic acid (SAHA), a potent differentiation agent acting through inhibition of histone deacetylases (HDACs), was recently approved for treatment of cutaneous T cell lymphoma. We report herein the synthesis of dual inhibitors of IMPDH and HDACs. We found that mycophenolic hydroxamic acid (9, MAHA) inhibits both IMPDH (K-i = 30 nM) and HDAC (IC50 = 5.0 mu M). A modification of SAHA with groups known to interact with IMPDH afforded a SAHA analogue 14, which inhibits IMPDH (K-i = 1.7 mu M) and HDAC (IC50 = 0.06 mu M). Both MAHA (IC50 = 4.8 mu M) and SAHA analogue 14 (IC50 = 7.7 mu M) were more potent than parent compounds as antiproliferation agents. They were also significantly more potent as differentiation inducers.