77887-20-8Relevant academic research and scientific papers
Efficient sonogashira coupling of unprotected halonucleosides in aqueous solvents using water-soluble palladium catalysts
Hyung Cho, Joon,Prickett, Caitlin D.,Shaughnessy, Kevin H.
experimental part, p. 3678 - 3683 (2010/08/20)
A variety of applications of C-alkynylated nucleosides has prompted the continuing development of efficient synthetic methods for their preparation. We report an efficient and environmentally benign Sonogashira coupling reaction for alkynylation of unprotected halonucleosides in an aqueoussolvent. The combination of Pd(OAc)2, CuI, and TXPTS [trisodium tri(2,4-dimethyl-5-sulfonatophenyl)phosphane] provided an effective catalyst for the alkynylation of 8-bromo-purines and 5-iodouridine in H2O/CH 3CN (1:1) in yields ranging from 42 to 98%.
Oligodeoxynucleotides incorporating structurally simple 5-alkynyl-2′-deoxyuridines fluorometrically respond to hybridization
Hudson, Robert H. E.,Ghorbani-Choghamarani, Arash
, p. 1845 - 1848 (2008/02/10)
Selected 5-ethynyl derivatives of 2′-deoxyuridine are shown to fluorometrically respond to hybridization and selectively base-pair to adenine whilst maintaining duplex stability. The Royal Society of Chemistry.
Design and studies of novel 5-substituted alkynylpyrimidine nucleosides as potent inhibitors of mycobacteria
Rai, Dinesh,Johar, Monika,Manning, Tracey,Agrawal,Kunimoto, Dennis Y.,Kumar, Rakesh
, p. 7012 - 7017 (2007/10/03)
We herein report a new category of 5-substituted pyrimidine nucleosides as potent inhibitors of mycobacteria. A series of 5-alkynyl derivatives of 2′-deoxyuridine (1-8), 2′-deoxycytidine (9-14), uridine (15-17), and 2′-O-methyluridine (18, 19) were synthe
Highly potent and selective inhibition of varicella-zoster virus by bicyclic furopyrimidine nucleosides bearing an aryl side chain
McGuigan,Barucki,Blewett,Carangio,Erichsen,Andrei,Snoeck,De Clercq,Balzarini
, p. 4993 - 4997 (2007/10/03)
In addition to our recent report on the potent anti-varicella-zoster virus (VZV) activity of some unusual bicyclic furopyrimidine nucleosides bearing long alkyl side chains, we herein report the further significant enhancement of the antiviral potency by
Nucleic Acid Related Compounds. 39. Efficient Conversion of 5-Iodo to 5-Alkynyl and Derived 5-Substituted Uracil Bases and Nuleosides
Robins, Morris J.,Barr, Philip J.
, p. 1854 - 1862 (2007/10/02)
Coupling of terminal alkynes with 5-iodo-1-methyl-uracil and 5-iodouracil nucleosides (protected as their p-toluyl esters) proceeded in high yields in the presence of bis(triphenylphosphine)palladium(II) chloride and copper(I)iodide in warm triethylamine.Several of the subsequently deprotected 5-alkynyl-2'-deoxyuridines, including the parent 5-ethynyl-2'-deoxyuridine, had antiviral activity, and their 5'-monophosphates inhibited thymidylate synthetase.Hydrogenation of the 5-alkynyl side chain can be controlled to give (Z)-5-alkenyl- or the saturated 5-alkyl-2'-deoxyuridines.This provides a stereocontrolled route to the known 5-ethyl-and 5-n-hexyl-2'-deoxyuridines as well as (E)-5-(2-bromovinyl)-2'-deoxyuridine (BVDU).Hydration of the triple bond gave the corresponding uracil-5-alkanone products in favorable cases.
NUCLEIC ACID RELATED COMPOUNDS. 31. SMOOTH AND EFFICIENT PALLADIUM-COPPER CATALYZED COUPLING OF TERMINAL ALKYNES WITH 5-IODOURACIL NUCLEOSIDES
Robins, Morris J.,Barr, Philip J.
, p. 421 - 424 (2007/10/02)
Coupling of terminal alkynes with protected 5-iodouracil nucleosides in the presence of dichlorobis(triphenylphosphine)palladium and copper(I) iodide in triethylamine gives the corresponding 5-(alkyn-1-yl)uracil nucleosides in 72-92percent yields.
ALCYNYL-5 DESOXY-2' URIDINES PAR COUPLAGES D'ORGANOZINCIQUES ACETYLENIQUES AVEC L'IODO-5 O-3',5'-BIS(TRIMETYLSYLYL) DESOXYURIDINE, CATALYSES PAR DES COMPLEXES ORGANOPALLADIES ET DE NICKEL
Vincent, Patrice,Beaucourt, Jean-Pierre,Pichat, Louis
, p. 945 - 947 (2007/10/02)
5-Alkynyl 2'-deoxyuridines are obtained in low to modest yields by the palladium and Nickel catalyzed reaction of alkynylzinc reagents with O-3',5'-bis(trimethylsilyl) deoxyuridine in T.H.F.
