565473-06-5Relevant academic research and scientific papers
PURINE DERIVATIVES FOR THE TREATMENT OF VIRAL INFECTIONS
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Page/Page column 8, (2013/05/23)
The present invention relates to purine derivatives of formula (I), processes for their preparation, pharmaceutical compositions, and their use in treating viral infections.
2-AMIDO-6-AMINO-8-OXOPURINE DERIVATIVES AS TOLL-LIKE RECEPTOR MODULATORS FOR THE TREATMENT OF CANCER AND VIRAL INFECTIONS, SUCH AS HEPATITIS C
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Page/Page column 59-60, (2010/11/24)
This invention relates to purine derivatives, to processes for their preparation, to compositions containing them and to their use. The present invention provides compounds of formula (I) wherein R1, R2, R3, R9, R9a and Y are defined in the description. More particularly, the present invention relates to the use of purine derivatives in the treatment of a variety of viral infections and immune or inflammatory disorders, including those in which the modulation, in particular agonism, of Toll-Like Receptors (TLRs) is implicated. Accordingly, the compounds of the invention are useful in the treatment of infectious disease such as Hepatitis (e.g. HCV, HBV), genetically related viral infections, inflammatory diseases such as asthma and arthritis, and cancer.
Efficient synthesis of 2,9-disubstituted 8-hydroxyadenine derivatives
Hirota, Kosaku,Kazaoka, Kazunori,Niimoto, Itaru,Sajiki, Hironao
, p. 1354 - 1365 (2007/10/03)
An efficient and general method for the synthesis of 2,9-disubstituted 8-hydroxyadenines, which are expected to have various biological activities, was realized. 5-amino-4-cyano-2-hydroxyimidazoles(1) were prepared from aminomalononitrile and isocyanates as key intermediates. The condensation of 1a with amidines, imidates, guanidine, urea and thioureas afforded 8-hydroxyadenines (2-6) possessing various substituents at the 2-position. Furthermore, selective alkylation of 2-amino- and 2-hydroxyadenines (4 and 6) successively proceeded to give the corresponding 2-alkylamino- and 2-alkoxyadenines (5 and 7), respectively. 2-Alkythioadenines (15) were prepared by an analogous reaction of 1a with benzoyl isothiocyanate and subsequent S-alkylation. The imidazoles 1 are most useful intermediated for the synthesis of 8-hydroxyadenine derivatives.
