Condensed-Purines Syntheses of Tetrahydro-1,4-diazepino(1,2,3-gh)purin-2-one and Hexahydro-1,4-diazocino(1,2,3-gh)purin-2-one.
作者:Hirokazu SUZUKI、Hiroyuki SAWANISHI、Kenji YAMAMOTO、Ken-ichi MIYAMOTO
DOI:10.1248/cpb.47.1322
日期:——
1, 4-Pyrimido- (2a), 1, 4-diazepino- (2b), and 1, 4-diazocino[1, 2, 3-gh]purine (2c) were designed as selective cAMP-phosphodiesterase 4 (PDE 4) inhibitors. The desired condensed-purines(2b, c) were synthesized by reaction of 7-aminoalkyl-3-propylpurine-2, 4-diones (6b, c) with hexamethyldisilazane by intramolecular cyclization via silylation-amination.
1, 4-嘧啶基(2a)、1, 4-二氮杂环烯(2b)和1, 4-二氮杂辛烯[1, 2, 3-gh]嘌呤(2c)被设计为选择性cAMP-磷酸二酯酶4(PDE 4)抑制剂。所需的缩合嘌呤(2b, c)通过与六甲基二硅氨(6b, c)反应进行内源环化,通过硅化-氨化反应合成。