177471-62-4

Upstream product

• 100-58-3 phenylmagnesium bromide 
• 30725-00-9 2,3-O-isopropylidene-D-ribonic-γ-lactone 
• 174590-90-0 5-O-(tert-butyldiphenylsilyl)-2,3-O-isopropylidene-1-phenyl-D-ribofuranose 
• 58479-61-1 tert-butylchlorodiphenylsilane 
• 591-51-5 phenyllithium 
• 130222-84-3 5-(tert-butyldiphenylsilyl)-2,3-O-isopropylidene-D-ribono-1,4-lactone 

Downstream Products

• 32252-03-2 (-)-1'-deoxy-1'-phenyl-β-D-ribofuranose 
• 757956-96-0 (1S,2R,3S,4R)-1-deoxy-3,5-O-(1,3-disiloxanediyl-1,1,3,3-tetraisopropyl)-1-phenylribose 
• 757956-97-1 (1S,2R,3S,4R)-1-deoxy-3,5-O-(1,3-disiloxanediyl-1,1,3,3-tetraisopropyl)-2-O-methyl-1-phenylribose 
• 757956-98-2 (1S,2R,3S,4R)-1-deoxy-2-O-methyl-1-phenylribose 
• 179762-60-8 N-{4-[(2S,3R,4R,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3-(tert-butyl-dimethyl-silanyloxy)-4-hydroxy-tetrahydro-furan-2-yl]-phenyl}-2,2,2-trifluoro-acetamide 
• 179762-59-5 N-(4-{(2S,3R,4S,5R)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3,4-dihydroxy-tetrahydro-furan-2-yl}-phenyl)-2,2,2-trifluoro-acetamide 
• 177284-95-6 5'-O-(4,4'-dimethoxytrityl)-2'-O-tert-butyldimethylsilyl-1'-deoxy-1'-phenyl-β-D-ribofuranose 
• 177284-93-4 5'-O-(4,4'-dimethoxytrityl)-1'-deoxy-1'-phenyl-β-D-ribofuranose 

Relevant academic research and scientific papers

S-ANTIGEN TRANSPORT INHIBITING OLIGONUCLEOTIDE POLYMERS AND METHODS

Various embodiments provide STOPS? polymers that are S-antigen transport inhibiting oligonucleotide polymers, processes for making them and methods of using them to treat diseases and conditions. In some embodiments the STOPS? modified oligonucleotides include an at least partially phosphorothioated sequence of alternating A and C units having modifications as described herein. The sequence independent antiviral activity against hepatitis B of embodiments of STOPS? modified oligonucleotides, as determined by HBsAg Secretion Assay, is an EC50 that is less than 100 nM.

Triphenylphosphine: A catalyst for the synthesis of C-aryl furanosides from furanosyl halides

An array of C-aryl furanosides was prepared in good yields from furanosyl halides and aryl Grignard reagents in Et2O using PPh3 as a catalyst.

Triphenylphosphine: A catalyst for the synthesis of C-aryl furanosides from furanosyl halides

An array of C-aryl furanosides was prepared in good yields from furanosyl halides and aryl Grignard reagents in Et2O using PPh3 as a catalyst.

Synthesis of 1′-phenyl-2′-OMe ribose analogues connecting the thymine base at the 1′ position through a flexible linker for the formation of a stable anti-parallel triplex DNA

We have previously developed the innovative bicyclic nucleoside analogues (WNA) for the formation of the triplex DNA. The WNA analogue consists of an aromatic ring and a recognition base on the bicyclic skeleton, and the recognition of the CG or TA interrupting sites has been achieved by the WNA analogues. However, the stabilization ability of the WNA analogue is dependent on its neighboring nucleobases within the TFO. We hypothesized that the sequence dependency might arise from the fixed conformation of the bicyclic ring of the WNA. Thus, it was expected that an open-linker between the sugar part and the nucleobase might produce the flexibility and improve the stabilizing effect of the nucleobase analogues. We now report the design and synthesis of a new nucleoside analogue as an open-form of WNA-βT, the 1′-phenyl- 2′-OMe-ribose derivative, connecting the thymine base to the ribose part through a methylene linker (1) or an ethylene linker (2). TFO containing the 3′-dA-1-dG context recognized the CG interrupting site, and that with the 3′-dG-1-dG context recognized the GC site. In contrast, 2 displayed a stabilizing effect on all four base pairs with some preferences for the TFO containing 3′-dA-2-dG and 3′-dG-2-dG. These results suggested that a flexible linker between the nucleobase and the ribose part may improve the sequence dependency for the triplex formation.

Cobalt-catalyzed diastereoselective synthesis of C-furanosides. total synthesis of (-)-isoaltholactone

An array of C-aryl and C-vinyl furanosides were prepared in good yields and diastereoselectivities from C-halogeno furanosides either with aryl Grignard or with vinyl Grignard using the convenient Co(acac)3/TMEDA catalytic system. This method i

Modified Nucleosides for Ribozyme Structure-Activity Studies

C-Phenyl, C-p-aminophenyl and C-naphthyl as well as pyridine-4(2)-one ribofuranosides were synthesized and site-specifically incorporated into a hammerhead ribozyme using solid phase synthesis.The modified oligonucleotides were used to probe the structural requirements at position 7 for catalytic activity.A pyridine-4-one-base substitution at a single position (N7) within the ribozyme catalytic core increased catalytic rate 10-fold.C-Phenyl, N3-methyluracyl, and p-aminophenyl base substitution at N7 reproducibly increased the catalytic rate twofold.