申请人:American Home Products Corporation
公开号:US05250700A1
公开(公告)日:1993-10-05
There are disclosed compounds of the formula ##STR1## wherein R.sup.1 is hydrogen or lower alkyl; R.sup.2 is C.sub.3-7 alkyl or C.sub.3-7 cycloalkyl; R.sup.3 is hydrogen, lower alkyl, carboxyloweralkyl, lower alkoxycarbonyl, lower alkoxycarbonyl loweralkyl, aryl or aralkyl; R.sup.4 is hydrogen, C.sub.1-8 alkyl, ##STR2## B is a bond, NH or O; Y is O or S; A is a bond or --C.dbd.C--; n is 0-5 R.sup.5 may be hydrogen when B is NH, or R.sup.5 is lower alkyl, C.sub.3-8 cycloalkyl, aryl, substituted aryl, aralkyl, substituted aralkyl, aralkenyl, aralkenylalkyl, ##STR3## --(CH.sub.2).sub.n NR.sup.1 R.sup.1 or --(CH.sub.2).sub.n het, where het is a 5- or 6-membered, saturated or unsaturated, nitrogen- or sulfur- or oxygen-containing monoheterocycle, optionally substituted with lower alkyl or oxo; R.sup.6 is hydrogen or halo; the dotted line represents an optional double bond; and the pharmacologically acceptable salts thereof, which by virtue of their ability to selectively inhibit PDE IV, are bronchodilatory and anti-inflammatory and so are useful in the treatment of acute and chronic bronchial asthma and associated pathologies.
披露了具有以下公式的化合物##STR1##,其中R.sup.1是氢或低级烷基;R.sup.2是C.sub.3-7烷基或C.sub.3-7环烷基;R.sup.3是氢,低级烷基,羧低级烷基,低级烷氧羰基,低级烷氧羰基低级烷基,芳基或芳烷基;R.sup.4是氢,C.sub.1-8烷基,##STR2## B是键,NH或O;Y是O或S;A是键或--C.dbd.C--;n是0-5,当B是NH时,R.sup.5可以是氢,或者R.sup.5是低级烷基,C.sub.3-8环烷基,芳基,取代芳基,芳烷基,取代芳烷基,芳烯基,芳烯基烷基,##STR3## --(CH.sub.2).sub.n NR.sup.1 R.sup.1或--(CH.sub.2).sub.n het,其中het是5或6成员的,饱和或不饱和的,含氮或硫或氧的单杂环,可选择地用低级烷基或氧化取代;R.sup.6是氢或卤素;点线代表一个可选的双键;以及药理上可接受的盐,由于它们能够选择性地抑制PDE IV,因此具有扩张支气管和抗炎作用,因此在治疗急性和慢性支气管哮喘及相关病理方面是有用的。