N-9-Polymethylene derivatives of adenine and hypoxanthine with various functional groups in the omega -position of the alkyl substituent were synthesized. Their physicochemical properties and effect on the HIV reverse transcriptase and DNA topoisomerase I were studied.
Synthesis and Activity of 6-Substituted Purine Linker Amino Acid Immunostimulants
作者:Boulos Zacharie、Lyne Gagnon、Giorgio Attardo、Timothy P. Connolly、Yves St-Denis、Christopher L. Penney
DOI:10.1021/jm960844m
日期:1997.8.1
Further, this potent in vitro activity was reflected as a significant increase in CTL cell number in vivo. However, immunophenotyping of some of the other equipotent compounds did not reveal a parallel relative increase in CTLs in vivo. It was difficult to formulate a rigorous structure-activity relationship based on in vitro CTL activity. Nevertheless, the activity was dependent upon the nature of
The α-N-[(hypoxanthin-9-yl)-pentyloxycarbonyl]-arginine of formula I:
endowed with immunomodulating activity, is advantageously obtained by acylating N₇-nitroarginine with (hypoxanthin-9-yl)pentyloxycarbonylchloride, and subsequent elimination of the nitro group by means of hydrogenolysis.