Zobrazeno 1 - 10
of 70
pro vyhledávání: '"M. L. Taha"'
Autor:
Hassan B. Lazrek, M. L. Taha
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 104:591-594
The 6-benzylaminopurine 1 has been alkylated with (2-acetoxyethoxy)methylbromide 3, using trimethylsilylation and phase transfer catalysis procedures. The influence of the base, the solvent and the catalyst were studied. When the solid-liquid phase t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::93361f52fac7e293a6429e0cbfeac9b2
https://doi.org/10.1002/bscb.19951041004
https://doi.org/10.1002/bscb.19951041004
Autor:
M. L. Taha, Hassan B. Lazrek
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 104:647-652
The chemical synthesis of some 4-substituted 1-(4-hydroxybutyl)pyrazolo[3,4-d]pyrimidines was described. Using solid-liquid phase transfer catalysis, the 4-alkylthio-1-(4-acetoxybutyl)pyrazolo[3,4-d]pyrimidines 3a-c were regioselectively prepared in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::41a1c9e0956df4705f45e15ad701b7d7
https://doi.org/10.1002/bscb.19951041105
https://doi.org/10.1002/bscb.19951041105
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 105:279-285
A number of 4-substituted pyrazolo[3,4-d]pyrimidines 1a-f has been coupled with (2-acetoxyethoxy)methylbromide 2, using liquid-liquid and solid-liquid phase transfer catalysis. The influence of the solvent and catalyst has been studied. The N1 isomer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e34b9f5c2aa4cb040ede2e7af1d22fc5
https://doi.org/10.1002/bscb.19961050510
https://doi.org/10.1002/bscb.19961050510
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 21:165-176
The chemical synthesis of some acyclic alpha-(1H-pyrazolo[3,4-d]pyrimidin-4-yl)thioalkylamide nucleosides (10-12)a-c is described. The treatment of IH-pyrazolo[3,4-d]pyrimidin-4-thione 1 with compounds 2a-c gave, regioselectively, ethyl alpha-(1H-pyr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46cf17a88bac96aa63f2391e35010b12
https://doi.org/10.1081/ncn-120003180
https://doi.org/10.1081/ncn-120003180
Autor:
Christophe Pannecouque, Jean Louis Imbach, O. Moukha‐Chafiq, M. L. Taha, J. L. Barascut, Hassan B. Lazrek, E. De Clercq, Myriam Witvrouw
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 20:1797-1810
The chemical synthesis of some 4-substituted 1-[1-(2-hydroxyethoxy)-methyl-1,2.3-triazol-(4 and 5)-ylmethyl]-1-H-pyrazolo[3,4-d]pyrimidines 12a,b, 13a,b and 14-23 as acyclic nucleosides is described. Treatment of (2-acetoxyethoxy)methylbromide with s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4493bc27a345bf84d118a65bb6a973ca
https://doi.org/10.1081/ncn-100107191
https://doi.org/10.1081/ncn-100107191
Autor:
Jean-Jacques Vasseur, M. L. Taha, Hassan B. Lazrek, Christophe Pannecouque, Myriam Witvrouw, De Clercq E, Moukha-Hafiq O
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 20:1811-1821
The synthesis of 1-[1-(4-hydroxybutyl)-1,2,3-triazol-(4 and 5)-ylmethyl]-1H-pyrazolo[3,4-d]pyrimidines 11a,b, 12a,b and 13-17 as carboacyclic nucleosides is described. The compounds 8a,b were condensed, separately, with compound 7 via 1,3-dipolar cyc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27d373b471103bf784a96fff69981ac5
https://doi.org/10.1081/ncn-100107192
https://doi.org/10.1081/ncn-100107192
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 20:955-958
The synthesis of some acyclic alpha-(pyrazolo[3,4-d]pyrimidin-4-ylthio)alkylamide nucleosides is described.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5695dc35a28335bacfbca89939890783
https://doi.org/10.1081/ncn-100002467
https://doi.org/10.1081/ncn-100002467
Autor:
Hassan B. Lazrek, M. L. Taha
Publikováno v:
ChemInform. 27
The 6-benzylaminopurine 1 has been alkylated with (2-acetoxyethoxy)methylbromide 3, using trimethylsilylation and phase transfer catalysis procedures. The influence of the base, the solvent and the catalyst were studied. When the solid-liquid phase t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee7b182ac2df911735473d7fba2ccd85
https://doi.org/10.1002/chin.199608240
https://doi.org/10.1002/chin.199608240
Autor:
Hassan B. Lazrek, M. L. Taha
Publikováno v:
ChemInform. 27
The chemical synthesis of some 4-substituted 1-(4-hydroxybutyl)pyrazolo[3,4-d]pyrimidines was described. Using solid-liquid phase transfer catalysis, the 4-alkylthio-1-(4-acetoxybutyl)pyrazolo[3,4-d]pyrimidines 3a-c were regioselectively prepared in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::058d8823b0c9f011dee18efd7a1a681f
https://doi.org/10.1002/chin.199614251
https://doi.org/10.1002/chin.199614251
Publikováno v:
ChemInform. 27
A number of 4-substituted pyrazolo[3,4-d]pyrimidines 1a-f has been coupled with (2-acetoxyethoxy)methylbromide 2, using liquid-liquid and solid-liquid phase transfer catalysis. The influence of the solvent and catalyst has been studied. The N1 isomer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac22a063c63bdff742e9f1db7f7b3da1
https://doi.org/10.1002/chin.199634250
https://doi.org/10.1002/chin.199634250