New Neplanocin Analogues. 7. Synthesis and Antiviral Activity of 2-Halo Derivatives of Neplanocin A
作者:Takumi Obara、Satoshi Shuto、Yasuyoshi Saito、Robert Snoeck、Graciela Andrei、Jan Balzarini、Erik De Clercq、Akira Matsuda
DOI:10.1021/jm960145+
日期:1996.1.1
give the protected (6'R)-6'-C-methyl derivative 16b. Deprotection of these compounds afforded the target 2-halo derivatives of neplanocin A. Of these new compounds, 2-fluoroneplanocin A (1b) showed an antiviral potency and a spectrum that was comparable to that of neplanocin A (1a). It was particularly active against vaccinia virus, vesicular stomatitis virus, parainfluenza virus, reovirus, arenaviruses
描述了neplanocin A(1b,c),(6'R)-6'-C-甲基neplanocin A(2b)和dehydroxymethylneplanocin A(3b,c)的2-卤代衍生物的合成和抗病毒活性。在碱性条件下,已知的环戊烯基单元12和13与2-hadenenines的SN2反应分别得到了被保护的碳环核苷14b,c和15b,c。从环戊烯酮衍生物5开始,制备光学活性的甲苯磺酰氧基环戊烯衍生物11,将其与2-氟腺嘌呤类似地缩合,得到被保护的(6'R)-6'-C-甲基衍生物16b。这些化合物的脱保护作用提供了奈普兰菌素A的目标2-卤代衍生物。在这些新化合物中,2-氟奈普兰菌素A(1b)具有抗病毒效力,其光谱可与Neplanocin A(1a)媲美。