Palladium-catalyzed cross-coupling of 2-iodoadenosine with terminal alkynes: Synthesis and biological activities of 2-alkynyladenosines.
作者:Akira Matsuda、Misao Shinozaki、Tadashi Miyasaka、Haruhiko Machida、Tohichi Abiru
DOI:10.1248/cpb.33.1766
日期:——
Reaction of 2-iodoadenosine (2) with terminal alkynes in the presence of bis (triphenylphosphine) palladium dichloride and cuprous iodide in triethylamine and N, N, -dimethylformamide gave 2-alkynyl-adenosines (3a-h) in excellent yields. Several compounds showed high activity as inhibitors in rat passive cutaneous anaphylaxis (PCA) reaction. Among them, 2-(3-hydroxypropynyl)- and 2-(3-hydroxybutynyl)-adenosines (3d, f) are much more potent than disodium cromoglycate (DSCG).
2-碘腺苷(2)与末端炔烃在双(三苯基膦)氯化钯和碘化亚铜存在下,在三乙胺和N,N-二甲基甲酰胺中反应,得到了优良产率的2-炔基腺苷(3a-h)。几种化合物在大鼠被动皮肤过敏反应(PCA)中表现出高活性作为抑制剂。其中,2-(3-羟丙炔基)-和2-(3-羟丁炔基)-腺苷(3d, f)远比双钠氮芥(DSCG)更有效。