These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


PUBMED FOR HANDHELDS

Search MEDLINE/PubMed


  • Title: Synthesis and broad-spectrum antiviral activity of 7,8-dihydro-7-methyl-8-thioxoguanosine.
    Author: Henry EM, Kini GD, Larson SB, Robins RK, Alaghamandan HA, Smee DF.
    Journal: J Med Chem; 1990 Aug; 33(8):2127-30. PubMed ID: 2165160.
    Abstract:
    2,6,8-Trichloro-7-methylpurine (3) was converted to 2-chloro-8,9-dihydro-7-methyl-8-thioxopurin-6(1H)-one (5) by utilizing the difference in reactivity of the 2-, 6-, and 8-positions in the trichloropurine ring system to nucleophilic displacement. Compound 5 was subsequently glycosylated with 1-O-acetyl-2,3,5-tri-O-benzoyl-D-ribofuranose according to the Vorbrüggen procedure to yield 2-chloro-8,9-dihydro-7-methyl-9-(2,3,5-tri-O-benzoyl-beta-D-ribofuranosy l)-8- thioxopurin-6(1H)-one (6). Removal of the benzoyl protecting groups, followed by amination of 7 with liquid ammonia at 150 degrees C, gave 7,8-dihydro-7-methyl-8-thioxoguanosine (2). The structure of compound 2 was confirmed by X-ray crystallographic analysis. Compounds 1 (7,8-dihydro-7-methyl-8-oxoguanosine) and 2 were evaluated for activity in various animal virus infection models. Against banzi, Semliki Forest, and San Angelo viruses in mice, 2 was highly active when administered before virus inoculation.
    [Abstract] [Full Text] [Related] [New Search]