Riluzole prodrugs for melanoma and ALS: Design, synthesis, and in vitro metabolic profiling
摘要:
Riluzole (1) is an approved therapeutic for the treatment of ALS and has also demonstrated anti-melanoma activity in metabotropic glutamate GRM1 positive cell lines, a mouse xenograft assay and human clinical trials. Highly variable drug exposure following oral administration among patients, likely due to variable first pass effects from heterogeneous CYP1A2 expression, hinders its clinical use. In an effort to mitigate effects of this clearance pathway and uniformly administer riluzole at efficacious exposure levels, several classes of prodrugs of riluzole were designed, synthesized, and evaluated in multiple in vitro stability assays to predict in vivo drug levels. The optimal prodrug would possess the following profile: stability while transiting the digestive system, stability towards first pass metabolism, and metabolic lability in the plasma releasing riluzole. (S)-O-Benzyl serine derivative 9 was identified as the most promising therapeutically acceptable prodrug. (C) 2012 Elsevier Ltd. All rights reserved.
Pyridiazinone Derivatives for the Treatment of Tumours
申请人:Dorsch Dieter
公开号:US20080293719A1
公开(公告)日:2008-11-27
Compounds of the formula (I), in which R
1
, R
2
and R
3
have the meanings indicated in claim
1
, are inhibitors of tyrosine kinases, in particular Met kinase, and can be employed, inter alia, for the treatment of tumours