4-[(Alkylamino)methyl]furo[3,2-c]pyridines: A New Series of Selective .kappa.-Receptor Agonists
摘要:
The synthesis of 5-(arylacetyl)-4-[(alkylamino)methyl]furo[3,2-c]pyridines (16-23, 26, 27) and their activities as kappa-opioid receptor agonists are described. kappa-Agonist potency was particularly sensitive to the nature of the basic moiety. In particular, in the rabbit vas deferens (kappa-specific tissue), the 3-pyrrolidinol analogue 17 (IC50 = 2.7 nM) was found to be approximately 5-fold more potent than the corresponding pyrrolidine analogue 16 (IC50 15 nM). In the rat and hamster vasa deferentia (mu-specific and delta-specific tissues, respectively), 17 showed only weak antagonist activity (PKB > 5.5), underlining its selectivity for the kappa-opioid receptor. The major activity for 17 is resident in the 4S,3'S-isomer 26 (rabbit vas deferens IC50 = 1.1 nM). Compound 26 displays excellent antinociceptive activity, as determined in the mouse acetylcholine-induced abdominal constriction test (ED(50) = 0.001 mg/kg, sc).
4-[(Alkylamino)methyl]furo[3,2-c]pyridines: A New Series of Selective .kappa.-Receptor Agonists
摘要:
The synthesis of 5-(arylacetyl)-4-[(alkylamino)methyl]furo[3,2-c]pyridines (16-23, 26, 27) and their activities as kappa-opioid receptor agonists are described. kappa-Agonist potency was particularly sensitive to the nature of the basic moiety. In particular, in the rabbit vas deferens (kappa-specific tissue), the 3-pyrrolidinol analogue 17 (IC50 = 2.7 nM) was found to be approximately 5-fold more potent than the corresponding pyrrolidine analogue 16 (IC50 15 nM). In the rat and hamster vasa deferentia (mu-specific and delta-specific tissues, respectively), 17 showed only weak antagonist activity (PKB > 5.5), underlining its selectivity for the kappa-opioid receptor. The major activity for 17 is resident in the 4S,3'S-isomer 26 (rabbit vas deferens IC50 = 1.1 nM). Compound 26 displays excellent antinociceptive activity, as determined in the mouse acetylcholine-induced abdominal constriction test (ED(50) = 0.001 mg/kg, sc).
Compounds are disclosed of formula (I) ##STR1## wherein R.sub.1 represents hydrogen, unsubstituted or substituted C.sub.1-6 alkyl, halogen, --COR.sub.4 or --CO.sub.2 R.sub.4 (where R.sub.4 represents hydrogen or unsubstituted or substituted C.sub.1-6 alkyl); R.sub.2 and R.sub.3 are the same or different and are C.sub.1-6 alkyl or C.sub.3-6 alkenyl; or --NR.sub.2 R.sub.3 forms a 5-membered (optionally containing an oxygen atom adjacent to the nitrogen) or a 6-membered ring, which ring optionally contains one unit of unsaturation and which is unsubstituted or substituted by hydroxy, C.sub.1-6 acyloxy, oxo, optionally substituted methylidene, --COR.sub.5 (where R.sub.5 represents C.sub.1-6 alkyl, OR.sub.6 or --NHR.sub.6, and R.sub.6 represents hydrogen, C.sub.1-6 alkyl, aryl or ar(C.sub.1-6)alkyl) or said ring is substituted by .dbd.NOR.sub.7 (where R.sub.7 represents C.sub.1-6 alkyl); Z represents --O-- or --S--; X represents a direct bond, --CH.sub.2 -- or --CH.sub.2 O--; Ar represents a substituted phenyl moiety; and pharmaceutically acceptable salts thereof. The compounds are indicated as useful in the treatment of pain and cerebral ischaemia. Processes and intermediates for their preparation and pharmaceutical compositions containing them are also disclosed.
Furo- and thieno[3,2-c]pyridines and pharmaceutical compositions containing them
申请人:GLAXO GROUP LIMITED
公开号:EP0366327A1
公开(公告)日:1990-05-02
Compounds are disclosed of formula (I)
wherein
R₁ represents hydrogen, unsubstituted or substituted C₁₋₆alkyl, halogen, -COR₄ or -CO₂R₄ (where R₄ represents hydrogen or unsubstituted or substituted (C₁₋₆alkyl);
R₂ and R₃ are the same or different and are C₁₋₆alkyl or C₃₋₆alkenyl or -NR₂R₃ forms a 5-membered (optionally containing an oxygen atom adjacent to the nitrogen) or a 6-membered ring, which ring optionally contains one unit of unsaturation and which is unsubstituted or substituted by hydroxy, C₁₋₆acyloxy, oxo, optionally substituted methylidene, -COR₅ (where R₅ represents C₁₋₆alkyl, OR₆ or -NHR₆, and R₆ represents hydrogen, C₁₋₆alkyl, aryl, ar(C₁₋₆)alkyl) or =NOR₇ (where R₇ represents C₁₋₆alkyl);
Z represents -O- or -S-;
X represents a direct bond, -CH₂- or -CH₂O-;
Ar represents a substituted phenyl moiety;
and pharmaceutically acceptable salts thereof.
The compounds are indicated as useful in the treatment of pain and cerebral ischaemia.
Processes and intermediates for their preparation and pharmaceutical compositions containing them are also disclosed.
Naylor Alan, Judd Duncan B., Scopes David I. C., Hayes Ann G., Birch Phil+, J. Med. Chem, 37 (1994) N 14, S 2138-2144
作者:Naylor Alan, Judd Duncan B., Scopes David I. C., Hayes Ann G., Birch Phil+
DOI:——
日期:——
US5109008A
申请人:——
公开号:US5109008A
公开(公告)日:1992-04-28
4-[(Alkylamino)methyl]furo[3,2-c]pyridines: A New Series of Selective .kappa.-Receptor Agonists
作者:Alan Naylor、Duncan B. Judd、David I. C. Scopes、Ann G. Hayes、Philip J. Birch
DOI:10.1021/jm00040a004
日期:1994.7
The synthesis of 5-(arylacetyl)-4-[(alkylamino)methyl]furo[3,2-c]pyridines (16-23, 26, 27) and their activities as kappa-opioid receptor agonists are described. kappa-Agonist potency was particularly sensitive to the nature of the basic moiety. In particular, in the rabbit vas deferens (kappa-specific tissue), the 3-pyrrolidinol analogue 17 (IC50 = 2.7 nM) was found to be approximately 5-fold more potent than the corresponding pyrrolidine analogue 16 (IC50 15 nM). In the rat and hamster vasa deferentia (mu-specific and delta-specific tissues, respectively), 17 showed only weak antagonist activity (PKB > 5.5), underlining its selectivity for the kappa-opioid receptor. The major activity for 17 is resident in the 4S,3'S-isomer 26 (rabbit vas deferens IC50 = 1.1 nM). Compound 26 displays excellent antinociceptive activity, as determined in the mouse acetylcholine-induced abdominal constriction test (ED(50) = 0.001 mg/kg, sc).