Nucleic Acid Related Compounds. 82. Conversions of Adenosine to Inosine 5′-Thioether Derivatives withAspergillus oryzaeAdenosine Deaminase or Alkyl Nitrites. Substrate and Inhibitory Activities of Inosine 5′-Thioether Derivatives with Purine Nucleoside Phosphorylase
摘要:
Adenosine derivatives lacking a 5'-hydroxyl group seldom act as alternative substrates of adenosine deaminases from calf intestine and other mammalian sources. A deaminase from Aspergillus oryzae deaminated adenosine 5'-thioether derivatives cleanly and more efficiently than alkyl nitrites. The inosine derivatives were very poor alternative substrates and weak inhibitors of purine nucleoside phosphorylase.
Design, synthesis, and biological evaluation of novel human 5′-deoxy-5′-methylthioadenosine phosphorylase (MTAP) substrates
作者:Pei-Pei Kung、Luke R. Zehnder、Jerry J. Meng、Stanley W. Kupchinsky、Donald J. Skalitzky、M. Catherine Johnson、Karen A. Maegley、Anne Ekker、Leslie A. Kuhn、Peter W. Rose、Laura A. Bloom
DOI:10.1016/j.bmcl.2005.03.107
日期:2005.6
The structure-based design, chemical synthesis, and biological evaluation of novel MTAP substrates are described. These compounds incorporate various C5'-moieties and are shown to have different k(cat)/K values compared with the natural MTAP substrate (MTA). (c) 2005 Elsevier Ltd. All rights reserved.
Fluorination at C5′ of nucleosides. Synthesis of the new class of 5′-fluoro-5′-S-aryl (alkyl) thionucleosides from adenosine.
作者:Morris J. Robins、Wnuk F. Stanislaw
DOI:10.1016/s0040-4039(00)82174-7
日期:1988.1
Nucleic Acid Related Compounds. 80. Synthesis of 5'-S-(Alkyl and aryl)-5'-fluoro-5'-thioadenosines with Xenon Difluoride or (Diethylamido)sulfur Trifluoride, Hydrolysis in Aqueous Buffer, and Inhibition of S-Adenosyl-L-homocysteine hydrolase by derived "Adenosine 5'-Aldehyde" Species
作者:Morris J. Robins、Stanislaw F. Wnuk、Khairuzzaman B. Mullah、N. Kent Dalley、Chong-Sheng Yuan、Younha Lee、Ronald T. Borchardt
DOI:10.1021/jo00082a010
日期:1994.2
Treatment of 5/-S-(alkyl and aryl)-5'-thioadenosine derivatives 2 with XeF2, or the corresponding sulfoxides 3 with DAST/SbCl3, gave diastereomeric 5'-fluoro compounds which were deprotected to give the 5'-S-(alkyl and aryl)-5'-fluoro-5'-thioadenosine analogues 5. Stereochemistry was established by X-ray crystallography, and F-19 NMR chemical shifts were definitive for configurationally-related 5'-fluoro diastereomers. Sulfoxidation and thermolysis afforded the fluoromethylene analogues with retained relative configuration. The nucleoside 5'-alpha-fluoro thioethers 5 underwent spontaneous hydrolysis in aqueous buffer to give derived ''adenosine 5'-aldehyde'' species which caused potent time-dependent inactivation of S-adenosyl-L-homocysteine hydrolase.
ROBINS, MORRIS J.;WNUK, STANISLAW F., TETRAHEDRON LETT., 29,(1988) N 45, C. 5729-5732