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Simple syntheses of 1,3-dialkylpyrrolo- and furopyrimidines.
                                
                                    
                                        作者:NORIO KAWAHARA、TAKAKO NAKAJIMA、TSUNEO ITOH、HARUO OGURA                                    
                                    
                                        DOI:10.1248/cpb.33.4740
                                    
                                    
                                        日期:——
                                    
                                    Simple and efficient syntheses of 7-deazacaffeines, 9-deazatheophyllines, furo [2, 3-d] pyrimidines and furo [3, 2-d] pyrimidines from 5- or 6-substituted pyrimidines by means of intramolecular cyclization reactions are described.
                                    通过分子内环化反应,从5-或6-取代
嘧啶出发,简便高效地合成了7-脱氮
咖啡因、9-脱氮茶碱、
呋喃[2, 3-d]
嘧啶和
呋喃[3, 2-d]
嘧啶。
 
                                 
                             
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Kawahara, Norio; Nakajima, Takako; Itoh, Tsuneo, Heterocycles, 1984, vol. 22, # 10, p. 2217 - 2220
                                
                                    
                                        作者:Kawahara, Norio、Nakajima, Takako、Itoh, Tsuneo、Ogura, Haruo                                    
                                    
                                        DOI:——
                                    
                                    
                                        日期:——
                                    
                                    
                                    
                                 
                             
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KAWAHARA, NORIO;NAKAJIMA, TAKAKO;ITOH, TSUNEO;OGURA, HARUO, CHEM. AND PHARM. BULL., 1985, 33, N 11, 4740-4748
                                
                                    
                                        作者:KAWAHARA, NORIO、NAKAJIMA, TAKAKO、ITOH, TSUNEO、OGURA, HARUO                                    
                                    
                                        DOI:——
                                    
                                    
                                        日期:——
                                    
                                    
                                    
                                 
                             
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KAWAHARA, NORIO;NAKAJIMA, TAKAKO;ITOH, TSUNEO;OGURA, HARUO, HETEROCYCLES, 1984, 22, N 10, 2217-2220
                                
                                    
                                        作者:KAWAHARA, NORIO、NAKAJIMA, TAKAKO、ITOH, TSUNEO、OGURA, HARUO                                    
                                    
                                        DOI:——
                                    
                                    
                                        日期:——
                                    
                                    
                                    
                                 
                             
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RYBAR, ALFONZ;PFLEIDERER, WOLFGANG, COLLECT. CZECHOSL. CHEM. COMMUN., 52,(1987) N 11, 2730-2734
                                
                                    
                                        作者:RYBAR, ALFONZ、PFLEIDERER, WOLFGANG                                    
                                    
                                        DOI:——
                                    
                                    
                                        日期:——