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Volumn 13, Issue 18, 2003, Pages 3001-3004

Potent and selective inhibitors of platelet-derived growth factor receptor phosphorylation. Part 4: Structure-activity relationships for substituents on the quinazoline moiety of 4-[4-(N-substituted(thio)carbamoyl)-1-piperazinyl]-6,7-dimethoxyquinazoline derivatives

Author keywords

[No Author keywords available]

Indexed keywords

PLATELET DERIVED GROWTH FACTOR RECEPTOR; QUINAZOLINE DERIVATIVE;

EID: 0041519334     PISSN: 0960894X     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0960-894X(03)00634-6     Document Type: Article
Times cited : (17)

References (22)
  • 16
    • 85031078799 scopus 로고    scopus 로고
    • (a) An example of procedure A: A mixture of 4-chloroquinazoline and excess anhydrous piperazine in 2-propanol was refluxed for 4 h. Evaporation, extraction with chloroform, and condensation with 4-phenoxyphenyl isocyanate in appropriate solvent provided the target molecule 3a. (b) An example of procedure B: A mixture of 2,4-dichloro-6,7-dimethoxyquinazoline and N-tert-butoxycarbonylpiperazine (1.1 equiv) in THF and triethylamine was stirred overnight at room temperature. Evaporation, addition of water and NaCl provided 4-(2-chloro-6,7-dimethoxy-4-quinazolinyl)-1-piperazinecarboxylic acid tert-butyl ester in 98% yield. Removal of Boc group by trifluoroacetic acid in dichloromethane under ice-cooling, and then condensation with 4-phenoxyohenyl isocyanate in DMF and triethylamine provided the target molecule 6c.
  • 17
    • 85031083631 scopus 로고    scopus 로고
    • 1H NMR, Mass and CHN analyses.
  • 18
    • 85031072391 scopus 로고    scopus 로고
    • CHO cells expressing wild-type β-PDGFR was grown to confluency in 96-well microtiter plates under standard tissue culture conditions. Quiescent cells were incubated at 37°C with compound for 30 min followed by the addition of 8 nmol/L PDGF-BB for 10 min. Clarified lysates of cells by centrifugation were transfered into a second microtiter plate in which the wells were previously coated with anti-β-PDGFR mAb, and then incubated for 2 h at room temperature. After washing with binding buffer, rabbit polyclonal anti-phosphotyrosine antibody was added and plates were incubated at 37°C for 60 min. Subsequently, each well was washed with binding buffer and incubated with horse radish peroxidase-conjugated anti-rabbit antibody at 37°C for 60 min. Wells were washed prior to adding 2,2′-azino-bis(3-ethylbenzthiazoline-6-sulfonic acid, and the rate of substrate formation was monitored at 650 nm.
  • 20
    • 0035413617 scopus 로고    scopus 로고
    • and references cited therein
    • Bridges A.J. Chem. Rev. 101:2001;2541. and references cited therein.
    • (2001) Chem. Rev. , vol.101 , pp. 2541
    • Bridges, A.J.1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.