Purine → Nebularine
Reaktionsgleichung
[N:1]1[CH:9]=[C:8]2[C:4]([N:5]=[CH:6][NH:7]2)=[N:3][CH:2]=1.Cl[C@:11]1(CO)[O:16][C:14]([C:17](=[O:19])C)(O)[C@:13](C(=O)C)([OH:20])[C@:12]1(C(=O)C)[OH:24].CO.N>C(Cl)(Cl)Cl>[CH:9]1[C:8]2[N:7]=[CH:6][N:5]([C@@H:11]3[O:16][C@H:14]([CH2:17][OH:19])[C@@H:13]([OH:20])[C@H:12]3[OH:24])[C:4]=2[N:3]=[CH:2][N:1]=1Komponenten
5
Edukt 3
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Nebularine was prepared by the use of the thallous salt of purine in the procedure of Brown et al., J. Biol. Chem. 204, 1019 (1953), in place of the chloromercuri salt used therein. The thallous salt of purine is condensed with chlorotriacetylribofuranose and the resulting acetyl derivative hydrolyzed to the product with methanol-ammonia. Other experimental conditions were identical. Crystalline nebularine was obtained after chromatography of the crude product on silica-gel with chloroform.