There are provided compounds of the general formula (I): ##STR1## and physiologically acceptable salts thereof in which Z represents a group ##STR2## wherein R.sub.2 represents a hydrogen atom or a straight or branched chain alkyl radical, or Z can additionally represent a group ##STR3## and R.sub.1, R.sub.3 and R.sub.4, which may be the same or different, each represent a hydrogen atom, a cycloalkyl group, an aryl group which may optionally be substituted by one or more hydroxy, alkoxy, or halogen radicals, or a straight or branched alkyl or alkenyl group, which alkyl or alkenyl group may be substituted with an aryl group, which aryl group may optionally be substituted by one or more hydroxy, alkoxy or halogen radicals. The compounds possess spasmolytic and cAMP phosphodiesterase inhibitory activity.
The application is directed to compounds of Formula I:
and pharmaceutically acceptable salts and solvates thereof, wherein R
1
, R
2
, R
3
, R
4a
, and R
4b
are defined as set forth in the specification. The invention is also directed to use of compounds of Formula I to treat disorders responsive to the modulation of one or more opioid receptors, or as synthetic intermediates. Certain compounds of the present invention are especially useful for treating pain.
Processes for the preparation of triazinones and condensed triazinones, and compounds so obtained
申请人:GLAXO GROUP LIMITED
公开号:EP0009384A1
公开(公告)日:1980-04-02
Compounds of the formula (I)
(in which X represents HS- or a group R,R2N- wherein R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms or a benzyl group and R3 represents a C3-2 alkyl group or a C3-2 cycloalkyl group) are prepared by reacting an α-ketoester of the formula (II)
(in which Alk represents an alkyl group) or a precursor thereof with a compound of the formula (III)
The precursor of the compound of formula (II) may be a mixture of isomeric enol esters
The compounds of formula (I) may be converted into compounds of formula (VIII)
in which R, and R2 which may be the same or different represent hydrogen or a straight or branched chain alkyl group containing from 1 to 4 carbon atoms, and R3 is as defined above.