A copper-catalyzed Ritter-type cascade via iminoketene for the synthesis of quinazolin-4(3H)-ones and diazocines
作者:Takumi Abe、Koshiro Kida、Koji Yamada
DOI:10.1039/c7cc01406f
日期:——
We have developed a copper-catalyzed Ritter-type reaction/cyclization cascade of anthranilic acids and nitriles, affording the quinazolin-4(3H)-ones and diazocines.
[EN] PHOSPHATIDYLINOSITOL 3-KINASE INHIBITORS<br/>[FR] INHIBITEURS DE PHOSPHATIDYLINOSITOL 3-KINASE
申请人:GILEAD SCIENCES INC
公开号:WO2014201409A1
公开(公告)日:2014-12-18
The present disclosure provides phosphatidylinositol 3 -kinase (PI3K) inhibitors of formula (I), or pharmaceutically acceptable salts or isomers thereof, in which n, m, R1, R2, R4, and R3 are as defined herein. These compounds are useful for treatment of conditions mediated by one or more PI3K isoforms, such as PI3Kδ. The present disclosure further provides pharmaceutical compositions that include a compound of formula (I), or pharmaceutically acceptable salts or isomers thereof, and methods of using these compounds and compositions to treat conditions mediated by one or more PI3K isoforms, such as PI3Kδ.
Synthesis and SAR optimization of quinazolin-4(3H)-ones as poly(ADP-ribose)polymerase-1 inhibitors
作者:Shridhar S. Kulkarni、Satyakam Singh、Janki R. Shah、Woon-Kai Low、Tanaji T. Talele
DOI:10.1016/j.ejmech.2012.02.001
日期:2012.4
We have demonstrated that quinazolin-4(3H)-one, a nicotinamide (NI) mimic with PARP-1 inhibitory activity in the high micromolar range (IC50 = 5.75 mu M) could be transformed into highly active derivatives with only marginal increase in molecular weight. Convenient one to two synthetic steps allowed us to explore extensive SAR at the 2-, and 5- through 8-positions of the quinazolin-4(3H)-one scaffold. Substitutions at the 2- and 8-positions were found to be most favorable for improved PARP-1 inhibition. The amino group at 8-position resulted in compound 22 with an IC50 value of 0.76 mu M. Combination of the 8-amino substituent with an additional methyl substituent at the 2-position provided the most potent compound 31 [8-amino-2-methylquinazolin-4(3H)-one, IC50 = 0.4 mu M] in the present study. Compound 31 inhibited the proliferation of Brca1-deficient cells with an IC50 value of 49.0 mu M and displayed >10-fold selectivity over wild type counterparts. Binding models of these derivatives within the active site of PARP-1 have further supported the SAR data and will be useful for future lead optimization efforts. (C) 2012 Elsevier Masson SAS. All rights reserved.