| 摘要 |
1464401 Silylated aminoglycoside PFIZER Ltd 24 Oct 1975 [26 Oct 1974] 46412/74 Heading C3S [Also in Division C2] The penta - N - acetyl - octa - O - trimethylsilyl derivative of 1 - N - [(S) - 4 - amino - 2- hydroxybutyl] - kanamycin A is prepared by treating 1 - N - [(S) - 4 - amino - 2 - hydroxybutyl]-kanamycin A with acetic anhydride in methanol at room temperature for 24 hours, followed by a 2 : 1 mixture of hexamethyldisilazane and trimethylchlorosilane at room temperature for 24 hours. |
