Synthesis and Antiviral Study of Dihydrothieno and Thianopyrimidine Diones Acyclic Nucleosides As Potential Anti-HIV Agents
摘要:
Acyclic nucleosides were prepared by alkylation of dihydrothieno and thianopyrimidines diones following Vorbruggen and Niedballa's method.((1))None of these HEPT analogues showed significant activity against Human Immunodeficiency Virus-1 (HIV-1).
Synthesis and reactions of<i>n</i>-methyl-4-(methylthio)thieno[2,3-<i>d</i>]-pyrimidinium salts
作者:Hiroshi Maruoka、Fumi Okabe、Kenji Yamagata
DOI:10.1002/jhet.5570450543
日期:2008.9
the preparation of N-methyl-4-(methylthio)thieno[2,3-d]pyrimidinium salts 6a,b and 13a,b are described. Treatment of 6a,b and/or 13a,b with active methylene compounds such as malononitrile and ethyl cyanoacetate in the presence of sodium methoxide caused nucleophilic addition followed by elimination of methanethiol, giving the corresponding N-methyl-4-ylidenethieno[2,3-d]-pyrimidines 7a,b, 8a,b, 14a
描述了两种制备N-甲基-4-(甲硫基)噻吩并[2,3- d ]嘧啶鎓盐6a,b和13a,b的方法。在甲醇钠存在下,用活性亚甲基化合物(如丙二腈和氰基乙酸乙酯)处理6a,b和/或13a,b引起亲核加成,然后消除甲硫醇,得到相应的N-甲基-4- yylenethieno [2,3 - d ] -pyrimidines 7A,7B,8A,8B,14A,b和15A,b 。
Synthesis of 2-amino-4,5-dihydro-3-methanesulfonylfurans (and -thiophenes)
2-Amino-4,5-dihydro-3-methanesulfonylfurans 7 and 2-amino-4,5-dihydro-3-methanesulfonylthiophenes 8 were prepared by deamidation of tetrahydro-2-imino-3-methanesulfonyl-3-furancarboxamides 3 and of tetrahydro-2-imino-3-methanesulfonyl-3-thiophenecarboxamides 4 with bases. Compounds 3 and 4 were obtained by reaction of 2-amino-4,5-dihydro-3-furancarboxamides 1 and 2-amino-4,5-dihydro-3-thio-phenecarboxamides