Regioselective addition of Grignard reagents to a 2-oxopurinium salt
摘要:
Treatment of 6-ethoxy-1,3,6,7-tetrahydro-1,3,7-tribanzyl-2H-purin-2-one with trimethyl-chlorosilane gave a stable tribenzylated 2-oxopurinium salt, which selectively added Grignard reagents in the 6-position. The structure of the adducts were established from long range HETCOR NMR experiments.
Nucleic acid related compounds. 47. Synthesis and biological activities of pyrimidine and purine "acyclic" nucleoside analogs
作者:Morris J. Robins、Peter W. Hatfield、Jan Balzarini、Erik De Clercq
DOI:10.1021/jm00377a018
日期:1984.11
Various acyclic, i.e., (2-hydroxyethoxy)methyl and (2-acetoxyethoxy)methyl, analogues of pyrimidine and purinenucleosides have been prepared and evaluated for their antiviral, antimetabolic, and cytotoxic properties. All of the pyrimidine analogues, including (E)-5-(2-bromovinyl)-1-[(2-hydroxyethoxy)methyl]uracil (12) and its O-acetyl derivative (13), were virtually devoid of antiviral, cytotoxic
In this article, we describe the synthesis of 5-nitro-1-(2-deoxy-alpha-D-erythro-pentofuranosyl)cytosine (4alpha), 5-nitro-1-(2-deoxy-beta-D-erythro-pentofuranosyl)cytosine (4beta), 5-amino-1-(2-deoxy-alpha-D-erythro-pentofuranosyl)cytosine (5alpha), 5-nitro-1-(2-deoxy-beta-D-erythro-pentofuranosyl)cytosine (5beta), 5-nitro-1-(2,3-dideoxy-beta-D-ribofuranosyl)uracil (6beta), 5-amino-1-(2,3-dideoxy-alpha
A Novel Practical Synthesis of<i>C</i>-2-Arylpurines
作者:Takahiro Itoh、Kimihiko Sato、Toshiaki Mase
DOI:10.1002/adsc.200404159
日期:2004.12
obtained with 1,1′-bis(di-tert-butylphosphino)ferrocene (=D-t-BPF) under anhydrous conditions. Tolerance of various arylboronic acids was also found. Subsequent reduction with H2/Pd-C of one of the coupling adducts, 4-amino-5-nitro-2-phenylpyrimidine, gave the diamine, which was further condensed with activated acid derivatives to afford a wide variety of the 2-phenylpurine derivatives in excellent
Johnson; Johns; Heyl, American Chemical Journal, 1906, vol. 36, p. 176
作者:Johnson、Johns、Heyl
DOI:——
日期:——
Synthesis and Antiviral Activity of 5-Substituted Cytidine Analogues: Identification of a Potent Inhibitor of Viral RNA-Dependent RNA Polymerases
作者:Daniel A. Harki、Jason D. Graci、Jessica E. Galarraga、William J. Chain、Craig E. Cameron、Blake R. Peterson
DOI:10.1021/jm060872x
日期:2006.10.1
As part of our studies of lethal viral mutagens, a series of 5-substituted cytidine analogues were synthesized and evaluated for antiviral activity. Among the compounds examined, 5-nitrocytidine was effective against poliovirus (PV) and coxsackievirus B3 (CVB3) and exhibited greater activity than the clinically employed drug ribavirin. Instead of promoting viral mutagenesis, 5-nitrocytidine triphosphate inhibited PV RNA-dependent RNA polymerase (K-d = 1.1 +/- 0.1 mu M), and this inhibition is sufficient to explain the observed antiviral activity.