Synthesis of 3′-deoxy-3′-fluorokanamycin A and 3′,4′-dideoxy-3′-fluorokanamycin A
作者:Yoshiaki Takahashi、Tsutomu Tsuchiya、Sumio Umezawa、Hamao Umezawa
DOI:10.1016/0008-6215(91)80124-6
日期:1991.3
3'-Deoxy-3'-fluorokanamycin A (14) has been prepared by condensation of 6-azido-2,4-di-O-benzyl-3,6-dideoxy-3-fluoro-alpha-D-glucopyranlsyl++ + bromide (8) and 6-O-(2-O-acetyl-4,6-O-cyclohexylidene-3-deoxy- 3-tosylamino-alpha-D-glucopyranosyl)-2-deoxy-1,3-di-N-tosylstre ptamine (10). Compound 8 was obtained from 3-deoxy-3-fluoro-1,2:5,6-di-O-isopropylidene-D-glucofuranose in seven steps. 3',4'-Did
3'-脱氧-3'-氟卡那霉素A(14)是通过6-叠氮基-2,4-二-O-苄基-3,6-二脱氧-3-氟-α-D-吡喃葡萄糖基++ +溴的缩合制备的(8)和6-O-(2-O-乙酰基-4,6-O-环己叉基-3-脱氧-3-甲苯磺酰基氨基-α-D-吡喃葡萄糖基)-2-脱氧-1,3-二-N-甲苯磺胺(10)。通过七个步骤,从3-脱氧-3-氟-1,2,5,6-二-O-异亚丙基-D-葡萄糖呋喃糖获得化合物8。3',4'-Dideoxy-3'-fluorokanamycin A(22)是由12通过关键的选择性4'-氯脱氧反应制得的。14和22均比3'-脱氧卡那霉素A对敏感细菌和耐药细菌具有更高的活性。