SEARCH Articles Figures Tables 7-Alkyl purine-2,4- -diones Alkylated purines Alkylation of purines Purine nucleoside, alkylation Purine, 6-chlorocoupling reactions with primary alkyl Grignard reagents Purine, 6-methylthiocoupling reactions with primary alkyl Grignard reagents Purine, 9-alkyl-6-iodoSrnI reaction Purines 7-alkyl- from Purines 9- alkyl Purines 9- alkyl Purines N-alkylation