Nucleoside synthesis: A systematic study of the influence of the nature and stereochemistry of d-aldopentofuranoses, and the effect of the substituent at C-2, in the acid-catalyzed fusion-reaction with indazole

A systematic study of the acid-catalyzed fusion-reaction is reported. The influence of the nature and stereochemistry of the d-aldopentofuranose and the effect of the substituent at C-2 have been investigated by using indazole as a model heterocycle. The results obtained show that the nature and ste...

Full description

Saved in:
Bibliographic Details
Published in:Carbohydrate research 1980-01, Vol.78 (2), p.285-293
Main Authors: Kam, Bernard L., Barascut, Jean-Louis, Imbach, Jean-Louis
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A systematic study of the acid-catalyzed fusion-reaction is reported. The influence of the nature and stereochemistry of the d-aldopentofuranose and the effect of the substituent at C-2 have been investigated by using indazole as a model heterocycle. The results obtained show that the nature and stereochemistry of the starting, per- O-acetylated d-aldopentofuranose have no significant effect upon the product distribution of the acid-catalyzed fusion-reaction. The use of a sugar lacking a participating group at C-2 showed, however, that the absence of participation increases the ratio of cis-1′,2′-nucleosides, and the mechanism involved is discussed. In all cases, the results indicated that the distribution of the products is determined by their relative, thermodynamic stabilities.
ISSN:0008-6215
1873-426X
DOI:10.1016/0008-6215(80)90009-9