84558-94-1Relevant articles and documents
2′-De-oxy-5-propynyluridine: A nucleoside with two conformations in the asymmetric unit
Budow, Simone,Eickmeier, Henning,Reuter, Hans,Seela, Frank
, p. o645-o648 (2009)
The title compound, 1-(2-de-oxy-Β-d-erythro-pentofuranos-yl)-5-(prop- 1-yn-yl)pyrimidin-2,4(1H,3H)-dione, C12H14N 2O5, shows two conformations in the crystalline state: conformer 1 adopts a C2′-endo (close to 2 E; S-type) sugar pucker and an anti nucleobase orientation [χ = -134.04 (19)°], while conformer 2 shows an S sugar pucker (twisted C2′-endo-C3′-exo), which is accompanied by a different anti base orientation [χ = -162.79 (17)°]. Both mol-ecules show a +sc (gauche, gauche) conformation at the exocyclic C4′ - C5′ bond and a coplanar orientation of the propynyl group with respect to the pyrimidine ring. The extended structure is a three-dimensional hydrogen-bond network involving intermolecular N - H...O and O - H...O hydrogen bonds. Only O atoms function as H-atom acceptor sites.
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
Rapid methylation of terminal acetylenes by the Stille coupling of methyl iodide with alkynyltributylstannanes: A general protocol potentially useful for the synthesis of short-lived 11CH3-labeled PET tracers with a 1-propynyl group
Hosoya, Takamitsu,Wakao, Masahiro,Kondo, Yurie,Doi, Hisashi,Suzuki, Masaaki
, p. 24 - 27 (2007/10/03)
The Pd(0)-mediated rapid coupling (trapping) reaction of methyl iodide with an excess amount of alkynyltributyl-stannane has been developed with the aim to incorporate a short-lived 11C-labeled methyl group into biologically active organic compounds with a 1-propynyl structural unit.
Pyrrolo-dC and pyrrolo-C: Fluorescent analogs of cytidine and 2′-deoxycytidine for the study of oligonucleotides
Berry, David A.,Jung, Kee-Yong,Wise, Dean S.,Sercel, Anthony D.,Pearson, William H.,Mackie, Hugh,Randolph, John B.,Somers, Robert L.
, p. 2457 - 2461 (2007/10/03)
Pyrrolo-dC (1a, 6-methyl-3-(2-deoxy-β-D-ribofuranosyl)-3H-pyrrolo[2,3- d]pyrimidin-2-one) and its cyanoethyl phosphoramidite 2a were synthesized. The latter was incorporated into oligodeoxyribonucleotides by standard automated synthesis techniques, where
Synthesis and some biochemical properties of a novel 5,6,7,8-tetrahydropyrimido[4,5-c]pyridazine nucleoside
Loakes, David,Brown, Daniel M.,Salisbury, Stephen A.,McDougall, Mark G.,Neagu, Constantin,Nampalli, Satyam,Kumar, Shiv
, p. 1193 - 1204 (2007/10/03)
A novel nucleoside analogue is described based on the pyridazine ring system. The nucleoside was successfully incorporated into DNA via both its phosphoramidite and 5′-triphosphate derivatives. Enzymatically, the analogue behaves essentially as thymidine:
Synthesis and enzymatic incorporation of a novel, bicyclic pyrimidine nucleoside: A thymidine mimic
Loakes, David,Brown, Daniel M.,Salisbury, Stephen A.,McDougall, Mark G.,Neagu, Constantin,Nampalli, Satyam,Kumar, Shiv
, p. 3387 - 3389 (2007/10/03)
Nucleophilic ring-opening and rearrangement reaction of a furanopyrimidine nucleoside with anhydrous hydrazine provided a novel, 6,6-bicyclic pyrimidopyridazin-7-one nucleoside (dH, 4), whose structure was confirmed by X-ray crystallography. This novel nucleoside was converted to its 5′-triphosphate (dHTP) for studies with DNA polymerases and incorporated into a template by using standard phosphoramidite chemistry. In the template, dH directed the incorporation of dATP and to a lesser extent dGTP into the transcript and dHTP was efficiently incorporated at the 3′-end of a primer opposite dA using both exonuclease free Klenow fragment (KF exo-) and Taq DNA polymerases and extended with natural dNTPs.
Inhibition of tumor necrosis factor alpha (TNFα) expression and function in vitro by modified antisense oligonucleotides
Ojwang, Joshua O.,Sudhakar Rao,Marshall, Helene B.,Mustain, Shawn D.,Chaudhary, Nilabh,Walker, David A.,Peyman, Anusch,Uhlmann, Eugen,Revankar, Ganapathi R.,Rando, Robert F.
, p. 1703 - 1707 (2007/10/03)
Antisense oligonucleotides containing C-5 hexynyl/propynyl modified pyrimidines were synthesized using solid phase phosphoramidite chemistry. These modified oligonucleotides were found to have significant inhibitory activity against TNFα production in vit
Oligodeoxynucleotides Containing C-5 Propyne Analogs of 2'-Deoxyuridine and 2'-Deoxycytidine
Froehler, Brian C.,Wadwani, Shalini,Terhorst, Terry J.,Gerrard, Sonja R.
, p. 5307 - 5310 (2007/10/02)
Oligodeoxynucleotides (ODN) containing 5-(1-propynyl)-2'-deoxyuridine and 5-(1-propynyl)-2'-deoxycytidine significantly enhance double-helix formation with single strand RNA and 5-(1-propynyl)-2'-deoxyuridine significantly enhances triple-helix formation with double stranded DNA.
Structural requirements of olefinic 5-substituted deoxyuridines for antiherpes activity
Goodchild,Porter,Raper,Sim,Upton,Viney,Wadsworth
, p. 1252 - 1257 (2007/10/02)
A number of structurally related 5-substituted pyrimidine 2'-deoxyrubinucleosides were synthesized and tested for antiviral activity against herpes simplex virus type 1 (HSV-1) in cell culture. A minimum inhibitory concentration was determined for each compound, and from a comparison of these values a number of conclusions were drawn with regard to those molecular features that enhance or reduce antiviral activity. Optimum inhibition of HSV-1 in cell culture occurred when the 5-substituent was unsaturated and conjugated with the pyrimidine ring, was not longer than four carbon atoms in length, had E stereochemistry, and included a hydrophobic, electronegative function but did not contain a branching point. Such features are contained in (E)-5-(2-bromovinyl)-2'-deoxyuridine, which was the most active of the compounds described.