Novel Tetrahydropyrido[1,2-a]isoindolone Derivatives (Valmerins): Potent Cyclin-Dependent Kinase/Glycogen Synthase Kinase 3 Inhibitors with Antiproliferative Activities and Antitumor Effects in Human Tumor Xenografts
摘要:
The development of CDK and GSK3 inhibitors has been regarded as a potential therapeutic approach, and a substantial number-of-diverse structures have been reported to inhibit CDKs and GSK-3 beta. in recent years. Only a few molecules have gone through or are currently undergoing clinical trials as CDK and GSK inhibitors. In this paper, we prepared valmerins, a new family containing the tetrahydropyrido[1,2-a]isoindone core. The fused heterocycle was prepared with a straightforward synthesis that was functionalized by a (het)arylurea. Twelve valmerins inhibited the CDK5 and GSK3 with an IC50 < 100 nM. A semiquantitative kinase scoring was realized, and a cellular screening was done. At the end of study, we investigated the in vivo potency of one valmerin. Mice exhibited good tolerance to our lead, which proved its efficacy and clearly blocked tumor growth. Valmerins appear also as good candidates: for further development as anticancer agents.
Inhibitors of type I MetAPs containing pyridine-2-carboxylic acid thiazol-2-ylamide. Part 1: SAR studies on the determination of the key scaffold
摘要:
Systematic SAR studies on the HTS hit pyridine-2-carboxylic acid thiazol-2-ylamide (PACT) analogues revealed that the scaffold of OCAT is indispensable for the inhibition of type I MetAP. For effective inhibition of the enzyme, the most suitable position to modify is the 3-position of the pyridine ring of PCAT, and the best substituents are those containing O or N atoms connected directly with the pyridine ring. These findings provide useful information for the design and discovery of more potent inhibitors of type I MetAPs. (C) 2004 Elsevier Ltd. All rights reserved.
The invention relates to new derivatives of formula (I), wherein the substituents are as defined in the specification; to processes for the preparation of such derivatives; pharmaceutical compositions comprising such derivatives; such derivatives as a medicament; such derivatives for the treatment of chronic pain.
The invention relates to new derivatives of formula (I),
wherein the substituents are as defined in the specification; to processes for the preparation of such derivatives; pharmaceutical compositions comprising such derivatives; such derivatives as a medicament; such derivatives for the treatment of chronic pain.