Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Panadda Chirakul"'
Publikováno v:
Langmuir. 18:4324-4330
A new synthesis of amino di(ethylene glycol)-terminated alkylthiol 1 (AEG2) is described. This precursor, made via a Mitsunobu synthesis, is designed to form self-assembled monolayers (SAMs) on gold, which allow direct coupling of biomolecules. The A
Publikováno v:
The Journal of Organic Chemistry. 65:8297-8300
A new, convergent synthesis of hexahomotriazacalix[3]arenes 1a−e is described. The key transformation in this synthesis involves the coupling of the triamines 4a−d with 2,6-bis(chloromethyl)-4-methylphenol 5 and results in the formation of the he
Publikováno v:
Tetrahedron Letters. 39:5473-5476
The first synthesis of an O-silylated derivative of a hexahomotriazacalix[3]arene has been achieved using 1-(trimethylsilyl)imidazole (TMSIM), 1,1,1,3,3,3-hexamethyldisilazane (HMDS), or bis(trimethylsilyl)trifluoroacetamide (BSTFA) in acetronitrile.
Publikováno v:
Tetrahedron Letters. 44:6899-6901
Reaction of 3,3,3-trifluoropropyne with 2′-deoxy-5-iodouridine under conditions that have previously been used to prepare 5-alkynyl-2′-deoxyuridine derivatives gave 2′-deoxy- N 3-(3,3,3-trifluoro-1-propenyl)uridine. This unexpected alkylation i
Publikováno v:
Organic Letters. 5:917-919
[reaction: see text] 2'-Deoxy-3'-deutero pyrimidines have been synthesized in high yields and incorporated into deoxyoligonucleotides using standard phosphoramidite chemistry. A key synthetic step is a stereospecific reduction of 3'-keto nucleosides
Publikováno v:
ChemInform. 29
The first synthesis of an O-silylated derivative of a hexahomotriazacalix[3]arene has been achieved using 1-(trimethylsilyl)imidazole (TMSIM), 1,1,1,3,3,3-hexamethyldisilazane (HMDS), or bis(trimethylsilyl)trifluoroacetamide (BSTFA) in acetronitrile.
Publikováno v:
ChemInform. 33
We report a four-step synthesis of 2'-deoxy-2-deuteroadenosine from 2'-deoxyadenosine in 38% overall yield. The more accessible 2'-deoxy-8-deuteroadenosine was also prepared and incorporated into DNA by automated solid phase synthesis (80% deuterium)
Autor:
Elizabeth A. Louie, Gary P. Drobny, Vinodhkumar Raghunathan, Panadda Chirakul, Snorri Th. Sigurdsson
Publikováno v:
Journal of magnetic resonance (San Diego, Calif. : 1997). 178(1)
REDOR is a solid-state NMR technique frequently applied to biological structure problems. Through incorporation of phosphorothioate groups in the nucleic acid backbone and mono-fluorinated nucleotides, 31 P{ 19 F} REDOR has been used to study the bin
Publikováno v:
Nucleosides, nucleotidesnucleic acids. 20(12)
We report a four-step synthesis of 2'-deoxy-2-deuteroadenosine from 2'-deoxyadenosine in 38% overall yield. The more accessible 2'-deoxy-8-deuteroadenosine was also prepared and incorporated into DNA by automated solid phase synthesis (80% deuterium)
Publikováno v:
Bioorganicmedicinal chemistry letters. 11(18)
In an attempt to synthesize DNA containing 2′-deoxy-5-(trifluoromethyl)uridine (1) using previously published protocols, we found that the trifluoromethyl group converted into a cyano group, resulting in DNA containing 5-cyano-2′-deoxyuridine (3)