Synthesis and biological activity of certain derivatives of oxazinomycin and related oxadiazole nucleosides
作者:Prem C. Srivastava、Roland K. Robins
DOI:10.1021/jm00142a010
日期:1981.10
2-(2-deoxy-beta-D-erythro-pentofuranosyl)-1,2,4-oxadiazole-3,5-dione (17); 14 was also converted into the corresponding 2',3'-O-isopropylidene derivative 15. Compound 14 showed significant antiviral activity against herpes simplex virus type 1, in vitro.
将奥沙菌霉素分别转化为2',3',5'-三-O-乙酰氧恶菌霉素(2)和2',3'-O-异丙基亚氧恶嗪菌素(3)。将化合物3碘化并还原以提供5′-脱氧-2′,3′-O-异亚丙基异恶嗪霉素(5),其在酸水解后提供5′-脱氧恶嗪霉素(6)。或者,也提供了奥沙霉素的碘化,然后进行催化氢化。6.用2-乙酰氧基苯甲酰氯处理奥沙霉素,以提供3'-O-乙酰基-2'-氯2'-脱氧氧嗪霉素(8),将其用氢化三丁基锡还原后,提供了3'-O-乙酰基-2'-脱氧恶嗪霉素(9)。羟嗪霉素也被转化为羟嗪霉素的5'-磷酸盐(10)和O4,2'-脱水羟嗪霉素(11)。1,2,4-Oxadiazole-3,5-dione(12)被糖基化以提供2-(2,3,5-三-O-乙酰基-β-D-呋喃核糖基)-1,2,4-恶二唑-3,5-二酮(13),在脱乙酰基作用后提供2-β-D-核呋喃糖基-1,2,4 -恶二唑-3,5-二酮(14)。