- The preparative method for 2-fluoroadenosine synthesis
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The preparative method for the synthesis of 2-fluoroadenosine starting from commercially available guanosine was developed. It included the intermediate formation of 2-amino-6-azido-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl) purine, which was isolated exclu
- Berzin,Dorofeeva,Leonov,Miroshnikov
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experimental part
p. 193 - 196
(2010/04/29)
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- Process for the preparation of fludarabine or fludarabine phosphate from guanosine
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A process for the production of fludarabine or fludarabine phosphate is provided, wherein the nucleoside guanosine or a suitable derivative is employed as the starting material. The guanosine starting material is subjected to (a) conversion of the 6-keto group into a 6-amino group, (b) conversion of the 2-amino group to a 2-fluoro group, and (c) conversion of the ribofuranosyl moiety to an arabinofuranosyl moiety. Steps (a), (b), and (c) can be performed individually or concomitantly and in any sequence.
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- Process for the production of 2-fluoropurine derivatives
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This invention relates to a process for the production of 2-fluoropurine derivatives from 2-aminopurine derivatives, which are reacted in HF/pyridine or HF/pyridine/H2 O in the presence of a nitrite.
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