http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2008306279-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5f9db723f41b9245df17b048ca637ad2 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D413-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D413-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D413-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D413-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D263-20 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-04 |
| filingDate | 2007-11-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e80d79d20a3cd9850ffbf2c03388e0b9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92dc276acc55f05d105308eeac3c6fad |
| publicationDate | 2008-12-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2008306279-A1 |
| titleOfInvention | Synthesis Intermediates Useful For Preparing Zolmitriptan |
| abstract | In particular, this invention relates to the synthesis intermediates (IV), (V), (VI) and (VIII) useful for preparing zolmitriptanzohnitriptan or a pharmaceutically acceptable salt thereof, which includes a) Preparation of the diazonium salt of the aniline hydrochloride (II); followed by reduction and acidification to give hydrazine (III); b) In situ Reaction of the hydrazine hydrochloride (III) with α-keto-δ-valerolactone, to give the hydrazone (IV); c) Fischer indole synthesis of the hydrazone (IV), to give the pyranoindolone of formula (V); d) Transesterification of the pyranoindolone (V) to provide the compound (VI), in which R means a straight or branched C1-C4 alkyl; e) Conversion of the hydroxyl group of the compound (VI) into dimethylamino to give the indolecarboxylate (VII), in which R means a straight or branched C1-C4 alkyl; f) Saponification of the 2-carboalkoxy group of the compound (VII), to provide indolecarboxylic acid (VIII); g) Decarboxylation of the indolecarboxylic acid (VIII), to provide zolmitriptan and, eventually, to provide a pharmaceutically acceptable salt thereof. |
| priorityDate | 2002-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 169.