[EN] 4-ALKYL SUBSTITUTED 3,4-DIHYDROPYRROLO[1,2-a]PYRAZIN-1(2H)-ONE DERIVATIVES AS KINASES INHIBITORS<br/>[FR] DÉRIVÉS 3,4-DIHYDROPYRROLO[1,2-A]PYRAZIN-1(2H)-ONE SUBSTITUÉ PAR 4-ALKYLE EN TANT QU'INHIBITEURS DE KINASES
申请人:NERVIANO MEDICAL SCIENCES SRL
公开号:WO2013050448A1
公开(公告)日:2013-04-11
The present invention relates to 4-alkyl substituted 3,4-dihydropyrrolo[1,2-a]pyrazin-1(2H)-one derivatives which modulate the activity of protein kinases and are therefore useful in treating diseases caused by dysregulated protein kinase activity. The present invention also provides methods for preparing these compounds, pharmaceutical compositions comprising these compounds, and methods of treating diseases utilizing such these compounds or the pharmaceutical compositions containing them.
4-ALKYL SUBSTITUTED 3,4-DIHYDROPYRROLO[1,2-a]PYRAZIN-1(2H)-ONE DERIVATIVES AS KINASES INHIBITORS
申请人:NERVIANO MEDICAL SCIENCES S.R.L.
公开号:US20140249146A1
公开(公告)日:2014-09-04
The present invention relates to 4-alkyl substituted 3,4-dihydropyrrolo[1,2-a]pyrazin-1(2H)-one derivatives which modulate the activity of protein kinases and are therefore useful in treating diseases caused by dysregulated protein kinase activity. The present invention also provides methods for preparing these compounds, pharmaceutical compositions comprising these compounds, and methods of treating diseases utilizing such these compounds or the pharmaceutical compositions containing them.
Substituted 3,4-dihydropyrrolo[1,2-a]pyrazin-1(2H)-ones as protein kinase inhibitors
申请人:NERVIANO MEDICAL SCIENCES S.R.L.
公开号:US09181258B2
公开(公告)日:2015-11-10
The present invention relates to 4-alkyl substituted 3,4-dihydropyrrolo[1,2-a]pyrazin-1(2H)-one derivatives, of formula (I)
which modulate the activity of protein kinases and are therefore useful in treating diseases caused by dysregulated protein kinase activity. The present invention also provides methods for preparing these compounds, pharmaceutical compositions comprising these compounds, and methods of treating diseases utilizing such these compounds or the pharmaceutical compositions containing them.
An enantiospecific entry to indolizidines by intramolecular acylation of N-pyrrole esters
作者:Charles W. Jefford、Steven R. Thornton、Krzysztof Sienkiewicz
DOI:10.1016/s0040-4039(00)76698-6
日期:1994.6
L-Glutamic diethyl ester hydrochloride was converted to its pyrrole derivative 22 by condensation with 2,5-dimethoxytetrahydrofuran in water. Cyclization of 22 with BBr3 afforded (5S)-5,6-dihydro-5-ethoxycarbonyl-8(7H)-indolizinone (23). Catalytic hydrogenation of 23 over Pd/C in acetic acid gave exclusively (5S,9R)-5-ethoxycarbonylindolizidine in an overall yield of 41%, whereas hydrogenation over Rh/Al2O3 in ethanol gave predominantly (5S,8S,9S)-5-ethoxycarbonyl-8-hydroxyindolizidine in 48.5% overall yield.
The synthesis of chiral 1-(1H-pyrrole) derivatives
作者:Charles W. Jefford、Fabienne de Villedon de Naide、Krzysztof Sienkiewicz
DOI:10.1016/0957-4166(96)00111-5
日期:1996.4
Enantiomerically pure primary amines possessing an epimerizable center, such as alpha-amino acids and their ester hydrochlorides, undergo condensation with tetrahydro-2,5-dimethoxyfuran 2 in acetic acid or acetic acid containing sodium acetate at 80 degrees C for 30 min. to give the corresponding 1-(1H-pyrrolyl) derivatives with partial racemization (9-18%). By replacing the solvent with a stirred mixture of aqueous acetic acid and 1,2-dichloroethane in the case of the acids and with water-1,2-dichloroethane for the ester hydrochlorides, repetition of the previous experiment gives the corresponding pyrroles in high yield and with complete retention of configuration, beta-Aminoalcohols are also efficiently converted to their 1-(1H-pyrrolyl) derivatives in a stirred, warm mixture of aqueous acetic acid and 1,2-dichloroethane. Copyright (C) 1996 Elsevier Science Ltd