http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2009306358-A1
Outgoing Links
Predicate | Object |
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assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_9253d9938a4d3ab251c295bc5d1a00c1 |
classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D285-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D417-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07H21-00 |
classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D285-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07H1-00 |
filingDate | 2008-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_274a050da2fa2596a0724a19e932b34f |
publicationDate | 2009-12-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
publicationNumber | US-2009306358-A1 |
titleOfInvention | Sulfur transfer reagents for oligonucleotide synthesis |
abstract | The use of N-formamidino-5-amino-3H-1,2,4-dithiazole-3-thiones as novel, efficient sulfur-transfer reagents is disclosed. The sulfur transfer from these reagents to compounds containing P(III) atom, triphenylphosphine, 5′-O-DMT-thymidine 2-cyanoethyl-(N,N-diisopropyl)phosphoramidite, and 5′-O-DMT-3′-O-levulinyl dithymidilyl 2-cyanoethyl phosphite, was studied in solution by 31 P NMR and HPLC. The sulfur transfer from title compounds was also studied in the solid-phase synthesis of oligonucleotide phosphorothioates by phosphoramidite methods. In this application, the efficiency of the sulfur transfer reaction for 2′-deoxyoligonucleotides was better than 99.5%. The novel sulfurizing agents are synthesized, at low cost, using simple chemical methods. As opposed to many sulfur transfer reagents known in the prior art such as 1,2-benzodithiol-3-one-1,1-dioxide (Beaucage reagent) and 5-ethoxy-3H-1,2,4-dithiazole-2-one (EDIT), the sulfurizing agents disclosed herein are highly stable in solution, which increases their practical and commercial value. |
isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114555617-A |
priorityDate | 2008-06-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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