Process for the manufacture of...

C - Chemistry – Metallurgy – 07 – H

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C07H 13/02 (2006.01) C07H 3/08 (2006.01) C07H 5/02 (2006.01) C07H 13/04 (2006.01) C07H 15/04 (2006.01) C07H 15/18 (2006.01) C07H 17/04 (2006.01) C07H 19/02 (2006.01) C07H 19/06 (2006.01) C07H 23/00 (2006.01)

Patent

CA 2039403

Disclosed is a process for the manufacture of 2-Deoxy-D-threo-pentofu- ranosides of formula 1 Image (1) wherein R1 is an alkyl group having 1 to 4 carbon atoms and R7 is a hy- droxy protection group by reacting a 2-deoxy-D-erythro-pentofuranoside of formula 2 Image (2) wherein R1 is an alkyl group having 1 to 4 carbon atoms, R3 is an alkyl-, aryl-, alkylaryl- or aralkyl-sulfonyl group, either unsubstituted or substi- tuted one or more times by halogen atoms, nitro or alkoxy groups, an imid- azolesulfonyl or halosulfonyl group, and R4 has the same meaning as R3 or signifies a hydroxy protection group. Furtheron disclosed are a process for the manufacture of 3-substituted 2- deoxy-D-erythro-pentofuranosides using these compounds and novel and substituted and unsubstituted 2-deoxy-D-pentofuranosides and their use for the manufacture of 3'-substituted 2'-deoxynucleosides.

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