http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-543187-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a6f1cc2d6e8576efbe553f779647a612 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_d202e9e866984fe229f6facc38f1d740 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7d664bf71ff7a1fc03d685e12038cf2b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D491-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D491-20 |
| filingDate | 1940-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1942-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-543187-A |
| titleOfInvention | Processes for producing erythroidine and its salts |
| abstract | 543,187. Erythroidine and its salts. MERCK & CO., Inc., FOLKERS, K., and MAJOR, R. T. July 13, 1940, No. 11674. Addition to 522,225. [Class 2 (iii)] Erythroidine salts are prepared by a process which comprises dissolving a physiologically active alkaloidal fraction in absolute alcohol, acidifying the solution and crystallizing the erythroidine salts from the solution. The starting materials are preferably obtained according to the process of the parent Specification. If desired, the erythroidine salts obtained as above may be decomposed by treatment with alkali to give the pure alkaloid erythroidine. The salts obtained by the process of the present invention are a mixture of stereo-isomers, usually a mixture of two stereoisomerides which have been named α-erythroidine and #-erythroidine, respectively. A series of examples are given, in all of which the starting materials used are those prepared by the process of the parent Specification. The acids which are used in the examples include dry hydrogen chloride, 40 per cent. hydrobromic acid, glacial acetic acid, picrolonic acid, and flavianic acid. |
| priorityDate | 1940-07-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.