Collection of Czechoslovak Chemical Communications p. 1525 - 1537 (1996)
Update date:2022-07-30
Topics:
Hocek, Michal
Masojidkova, Milena
Holy, Antonin
Andrei, Graciela
Snoeck, Robert
Balzarini, Jan
De Clercq, Erik
The synthesis of a series of 9-(2-phosphonomethoxyalkyl) derivatives of 6-(aminomethyl)purine 11, 2-amino-6-(aminomethyl)purine 12 and purine-6-carboxamidine 14 is reported. The 6-cyanopurines 1 and 2 were selectively alkylated with 2-[bis(isopropyloxy)phosphonylmethoxy]alkyl synthons 3 and 4 at the 9-position. Catalytic hydrogenation of the obtained 9-{2-[bis(isopropyloxy)phosphonylmethoxy]-alkyl}-6-cyanopurines 9 and 10 followed by treatment with bromotrimethylsilane afforded the title compounds 11 and 12. Analogous acyclic nucleotides derived from purine-6-carboxamidines 14 were prepared from the cyanopurines 9a and 10a by treatment with sodium methoxide and ammonium chloride followed by deprotection. Compounds 11 and 12 exhibited moderate activity (MIC50 = 3-50 μg/ml) against herpes simplex virus type 1, varicella-zoster virus and Moloney murine sarcoma virus in vitro.
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