申请人:Sumitomo Chemical Company, Limited
公开号:US04146717A1
公开(公告)日:1979-03-27
Viral infections caused by viruses which belong to, e.g. Pox, Herpes, Adeno, Myxo, Paramyxo groups are controlled by administering an effective amount of quinazoline derivatives of the formula ##STR1## wherein R.sub.1 is cyclo, C.sub.3 -C.sub.8 alkyl, cyclo C.sub.3 -C.sub.8 alkyl C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy C.sub.1 -C.sub.4 alkyl, C.sub.2-C.sub.5 alkenyloxy C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkylthio C.sub.1 -C.sub.4 alkyl, polyhalo C.sub.1- C.sub.4 alkyl, a group of the formula ##STR2## (wherein m is an integer of 1 to 3; and R.sub.4 and R.sub.5 are individually C.sub.1 -C.sub.4 alkyl, and may form together with the adjacent nitrogen atom an unsubstituted or C.sub.1 -C.sub.4 alkyl substituted 3 to 6 membered saturated heterocyclic ring, which may contain another nitrogen or oxygen atom) or a group of the formula --C.sub.n H.sub.2n --R.sub.6 (wherein n is 0 or an integer of 1 to 3; and R.sub.6 is a phenyl group, a substituted phenyl group or an aromatic or non-aromatic 3 to 6 membered heterocyclic ring which contains one or two hetero atoms selected from the group consisting of nitrogen, oxygen and sulfur atom, and may be optionally substituted by one or two C.sub.1 -C.sub.4 alkyl, and further, those substituents on adjacent carbon atoms may be joined to form a benzene or cyclohexane ring); R.sub.2 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio, C.sub.1 -C.sub.4 alkylsulfonyl, trifluoromethyl or nitro; and R.sub.3 is phenyl, substituted phenyl, cyclo C.sub.3 -C.sub.6 alkyl, pyridyl, furyl, nitrofuryl, thienyl, nitrothienyl, methylthienyl or pyrimidinyl.
属于Pox、Herpes、Adeno、Myxo、Paramyxo等病毒组的病毒感染可以通过给予有效量的喹唑啉衍生物来控制,其化学式为##STR1##其中R.sub.1为环状、C.sub.3-C.sub.8烷基、环状C.sub.3-C.sub.8烷基C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4烷氧基C.sub.1-C.sub.4烷基、C.sub.2-C.sub.5烯氧基C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4硫代烷基C.sub.1-C.sub.4烷基、多卤C.sub.1-C.sub.4烷基、##STR2##(其中m为1至3的整数;R.sub.4和R.sub.5分别为C.sub.1-C.sub.4烷基,且可能与相邻的氮原子结合形成未取代或C.sub.1-C.sub.4烷基取代的3至6元饱和杂环环,该环可能还包含另一个氮原子或氧原子)或--C.sub.nH.sub.2n--R.sub.6(其中n为0或1至3的整数;R.sub.6为苯基、取代苯基或含有一个或两个来自氮、氧和硫原子的杂原子的芳香或非芳香3至6元杂环环,且可选择地被一个或两个C.sub.1-C.sub.4烷基取代,此外,相邻碳原子上的取代基可以结合形成苯环或环己烷环);R.sub.2为氢、卤素、C.sub.1-C.sub.4烷基、C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4硫代烷基、C.sub.1-C.sub.4烷基磺酰基、三氟甲基或硝基;R.sub.3为苯基、取代苯基、环状C.sub.3-C.sub.6烷基、吡啶基、呋喃基、硝基呋喃基、噻吩基、硝基噻吩基、甲硫基噻吩基或嘧啶基。