申请人:American Home Products Corporation
公开号:US05191084A1
公开(公告)日:1993-03-02
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 is 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 or ##STR3## 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.
已披露的化合物的结构式为##STR1##其中R.sup.1是氢或较低的烷基;R.sup.2是C.sub.3-7烷基或C.sub.3-7环烷基;R.sup.3是氢、较低的烷基、羧基较低烷基、较低的烷氧羰基、较低的烷氧羰基较低烷基、芳基或芳基烷基;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为0-5;R.sup.5是氢当B为NH时,或者R.sup.5是较低的烷基、C.sub.3-8环烷基;芳基、取代芳基、芳基烷基、取代芳基烷基、芳基烯基、芳基烯基烷基或##STR3##R.sup.6是氢或卤素;虚线代表可选的双键;以及其药理学上可接受的盐,由于它们具有选择性抑制PDE IV的能力,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有用。