- Process for preparing N6,9-disubstituted adenine
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A process for preparing N6, 9-disubstituted adenines which comprises reacting a metal salt of N6 -substituted adenine with a benzyl halide compound, preferably in the presence of a phase transfer catalyst. According to the process, the N6,9-disubstuted adenines can be obtained in high yields and good selectivity.
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- Production of purine derivatives and intermediates therefor
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Improved processes for producing purine derivatives, such as 9-(2-chloro-6-fluorobenzyl)-6-methylaminopurine, which are useful as anticoccidial agents, and new arylazopyrimidine compounds of the formula: STR1 wherein R1 and R2 each is hydrogen, C1-3 alkyl, allyl or dihalobenzyl, and when either one of R1 and R2 is hydrogen, the other is other than hydrogen, and R3 is aryl, and acid addition salts thereof, which are useful as intermediates for production of the purine derivatives.
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- Purine derivatives
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Novel purine derivatives of the formula: STR1 wherein R1 is hydrogen or alkyl of 1 to 3 carbon atoms, R2 is alkyl of 1 to 3 carbon atoms or allyl, and R3 and R4, respectively, mean halogen, and their acid additi
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