http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IE-33130-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_571b8abacacea64d3f7089d0983b8b3b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D295-145 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D295-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-04 |
| filingDate | 1969-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1974-04-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IE-33130-B1 |
| titleOfInvention | Pyrazolo (3,4d) pyrimidines |
| abstract | 1,252,435. Pyrazolo(3,4-d)pyrimidines and intermediates therefor. WELLCOME FOUNDATION Ltd. 31 Jan., 1969 [2 Feb., 1968], No. 5397/68. Heading C2C. A process for producing therapeutic compounds I wherein R<SP>1</SP> is H or C 1 to C 4 alkyl, R<SP>3</SP> is OH or SH, and R<SP>4</SP> is H or OH, provided that R<SP>4</SP> is not OH when R<SP>3</SP> is SH, comprises reacting a compound III (obtained by reacting morpholine with cyanoacetamide in the presence of a compound R<SP>1</SP>C(OR<SP>2</SP>) 3 , wherein R<SP>2</SP> is C 1 to C 4 alkyl) with hydrazine to produce compound V, reacting compound V with urea or formamide and/or formic acid and optionally converting products I so obtained into other compounds I by standard methods, e.g. utilizing a sulphide such as phosphorus pentasulphide, to introduce an SH group.n[GB1252435A] |
| priorityDate | 1968-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.