930287-49-3 = 81103-11-9 反应条件:1.1 Reagents: Sodium Bisulfite Solvents: Ethanol,Water; 4 - 6 H,80 °C 标题:Preparation Of Clarithromycin. Selective 6-O-Methylation Of The Novel Erythromycin A 9-O-(2-Pyrimidyl)Oxime 作者:Brunet,Ernesto; Et Al 参考文献:Tetrahedron Letters 日期:2007 卷标:48(8) 页码:1321-1324]
= 81103-11-9 反应条件:1.1 Reagents: Sodium Nitrite,Hydrochloric Acid Solvents: Ethanol,Water; Rt -> 80 °C; 1 H,80 °C1.2 Reagents: Sodium Hydroxide Solvents: Water; Ph 10 - 11,80 °C; 80 °C -> Rt; 10 Min,Rt 标题:Synthesis Of 3-Oh-6-O-Methylerythromycin By One-Step Process 作者:Meng,Tao; Et Al 参考文献:Xiandai Huagong 日期:2006 卷标:26 页码:195-197]
930287-48-2 = 81103-11-9 反应条件:1.1 Reagents: Sodium Bisulfite Solvents: Ethanol,Water; 4 - 6 H,80 °C 标题:Preparation Of Clarithromycin. Selective 6-O-Methylation Of The Novel Erythromycin A 9-O-(2-Pyrimidyl)Oxime 作者:Brunet,Ernesto; Et Al 参考文献:Tetrahedron Letters 日期:2007 卷标:48(8) 页码:1321-1324
克拉霉素n-氧化物置于tin(Ll) Chloride,Sodium Carbonate体系中,用 二氯甲烷,水 作为反应溶剂,化学反应 1.5H,以32%的收率获得产物克拉霉素 参考文献:Method Of Preparing Clarithromycin 标题:Method Of Preparing Clarithromycin 摘要:克拉霉素可以通过将红霉素a N-氧化物与甲基化剂反应,得到6-O-甲基红霉素a N-氧化物;然后将上述得到的6-O-甲基红霉素a N-氧化物与还原剂在高收率下处理,从而轻松制备.
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