申请人:Syntex (U.S.A.) Inc.
公开号:US05449664A1
公开(公告)日:1995-09-12
Nucleoside compounds of the formula ##STR1## wherein: B is a purine or a pyrimidine; X and X' are H, OH or F, provided that at least one is H; Y and Y' are H, OH, OCH.sub.3 or F, provided that at least one is H; Y' and Z together form a cyclic phosphate ester, provided that Y is H; or Z is ##STR2## where n is zero, one, two or three; and Z' is N.sub.3 or OCH.sub.3 ; provided that when X' and Y' are OH and Z' is N.sub.3, B is not cytosine, and when X' and Y' are OH and Z' is OCH.sub.3, B is not uracil, adenine or cytosine; and the pharmaceutically acceptable esters, ethers and salts thereof, have been found to have potent antiviral activity with a high therapeutic ratio.
核苷类化合物的结构式为##STR1##其中:B为嘌呤或嘧啶;X和X'为H、OH或F,至少一个为H;Y和Y'为H、OH、OCH.sub.3或F,至少一个为H;Y'和Z一起形成环磷酸酯,其中Y为H;或Z为##STR2##其中n为零、一、二或三;Z'为N.sub.3或OCH.sub.3;条件是当X'和Y'为OH且Z'为N.sub.3时,B不是胞嘧啶,当X'和Y'为OH且Z'为OCH.sub.3时,B不是尿嘧啶、腺嘌呤或胞嘧啶;以及其药学上可接受的酯、醚和盐已被发现具有高治疗比的强效抗病毒活性。