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- W1984553669 abstract "Abstract ABSTRACT 6-Chloroxanthosine 1, when activated towards nucleophilic displacement at the 6-C position by conversion into the corresponding 3-N-(2, 4-dinitrophenyl) derivative 4, reacted with aq. 15NH3 to afford [6-15N]-isoguanosine 3b in 81% overall yield. Catalytic hydrogenation (Pd/C) of 1 led in 60% yield to isoinosine 8; alternatively, this could be obtained in 88% overall yield through alkaline hydrolysis of triphenylphosphonium salt 6, synthesized from 1 by reaction with PPh3. The reactivity of 1 was further explored by treating it with primary and secondary amines: the 6-N propylamino and the 6-N piperidinyl derivatives (5a and 5b, respectively) could thus both be prepared in more than 90% yield." @default.
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- W1984553669 date "1997-01-01" @default.
- W1984553669 modified "2023-09-28" @default.
- W1984553669 title "6-Chloroxanthosine, a Useful Intermediate for the Efficient Syntheses of [6-15N]-Isoguanosine, Isoinosine and Other Purine Nucleoside Analogues" @default.
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- W1984553669 doi "https://doi.org/10.1080/07328319708002532" @default.
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