http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4013671-A
Outgoing Links
Predicate | Object |
---|---|
assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_05ff905fdc49089f5f25746eaeb40190 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/A61K31-535 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-052 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61K31-535 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-052 |
filingDate | 1976-03-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
grantDate | 1977-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_aab27483ec26e867497cbf9273709bb6 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_37db79e72770fc992a5153e1dc03ae7a |
publicationDate | 1977-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-4013671-A |
titleOfInvention | Substituted benzopyrano[3,4-c]pyridines and process for their preparation |
abstract | Substituted benzopyrano[3,4-c]pyridines having the following structural formula are disclosed: ##STR1## In the above formula, R 1 R 2 are hydrogen, a hydroxyl group or a lower alkoxyl group of from 1 to 6 carbon atoms; R 3 is hydrogen or a lower alkyl group of from 1 to 6 carbon atoms and X is an oxygen atom, a sulfur atom, a methylene group or a nitrogen atom substituted by hydrogen, a lower alkyl group of from 1 to 6 carbon atoms or a lower alkanoyl group of from 1 to 6 carbon atoms. The compounds of this invention are prepared by reacting an R 1 , R 2 -substituted phenol with a 3-carbethoxy-4-piperidone in the presence of an acid catalyst to give an intermediate R 1 , R 2 -substituted benzopyrano[3,4-c] pyridine. N-aminoalkylbenzopyrano[3,4-c]pyridines are obtained by treating the benzopyrano[3,4-c]pyridine with an appropriately substituted alkyl halide. The compounds of this invention are useful as bronchodilators for the treatment of bronchial asthma. |
isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5244951-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5300357-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4404138-A |
priorityDate | 1975-01-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 171.