Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Phil Olsen"'
Publikováno v:
Tetrahedron Letters. 58:1050-1052
Herein, we describe the isolation and characterization of a UnyLinker dimer which, if left uncontrolled, can become incorporated in oligonucleotide products. The dimer is formed as a result of an unusual intermolecular osmium-catalyzed etherification
Autor:
Phil Olsen, R. Krishna Kumar, Lucio Mendez, Anthony N. Scozzari, Max N. Moore, Zhiwei Wang, Recaldo L. Carty, Vasulinga T. Ravikumar, Isaiah Cedillo, Ratnasamy Somanathan, Xue-Feng Zhu, Mark Andrade, Gerardo Aguirre, Dennis Gorman, Sylvain Berneès
Publikováno v:
Organic Process Research & Development. 12:399-410
A novel universal linker (UnyLinker) molecule which has a conformationally rigid and chemically stable bridge head ring oxygen atom carrying a conventional 4,4′-dimethoxytrityl (DMT) and succinyl groups locked in a syn orientation has been develope
Autor:
Phil Olsen, Dennis Gorman, Achim H. Krotz, Hans Gaus, Anthony N. Scozzari, Claus Rentel, James V. McArdle
Publikováno v:
Nucleosides, Nucleotides and Nucleic Acids. 23:767-775
The impuritiy profiles of acetonitrile solutions of the four standard O-cyanoethyl-N,N-diisopropyl-phosphoramidites of 5'-O-dimethoxytrityl (DMT) protected deoxyribonucleosides (dG(ib), dA(bz), dC(bz), T) were analyzed by HPLC-MS. The solution stabil
Publikováno v:
Nucleosides, nucleotidesnucleic acids. 26(3)
A versatile and conformationally preorganized universal linker molecule is reported here for efficient synthesis of phosphorothioate oligonucleotides. With respect to nucleoside loaded support, comparable yield and quality based on ion-pair LC-MS are
Publikováno v:
Nucleosides, nucleotidesnucleic acids. 26(2)
Phosphorothioate oligonucleotides could be synthesized using a 0.2 M solution of phenylacetyl disulfide (PADS) in a mixture of pyridine and acetonitrile (1:1, v/v) with >99.9% step-wise efficiency. Unlike most other sulfurizing reagents that need to
Publikováno v:
Bioorganicmedicinal chemistry. 14(14)
Multiple 2'-O-methoxyethyl modified phosphorothioate oligonucleotides of 18-20-mer in length were synthesized at various scales using 4,5-dicyanoimidazole (DCI) as coupling activator. Extensive synthetic, analytical (using ion-pair LC-MS), and in viv
Autor:
Hans Gaus, Kathleen L. Walker, Phil Olsen, Daniel C. Capaldi, Kent Van Sooy, Brett Turney, James V. McArdle, Claus Rentel
Publikováno v:
Bioorganicmedicinal chemistry letters. 15(18)
Some commercial batches of dichloroacetic acid (DCA) contain traces of chloral (trichloroacetaldehyde). Using such DCA to effect detritylation during solid-phase oligonucleotide synthesis results in the formation of a family of process impurities in
Autor:
Vasulinga T. Ravikumar, Ratnasamy Somanathan, R. Krishna Kumar, Phil Olsen, Max N. Moore, Recaldo L. Carty, Mark Andrade, Dennis Gorman, Xuefeng Zhu, Isaiah Cedillo, Zhiwei Wang, Lucio Mendez, Anthony N. Scozzari, Gerardo Aguirre, Sylvain Berneès
Publikováno v:
Organic Process Research & Development; Apr2008, Vol. 12 Issue 3, p399-410, 12p