StereoselectiveO-glycosylation oftrans-4-hydroxy-l-proline derivatives promoted by silver zeolite

Abstract
Trans-4-hydroxy-l-proline has been converted to four imino- and carboxyl-blocked derivatives which are suitable for the synthesis of 4-O-glycosyl conjugates. Reaction of these derivatives with 2,3,5-tri-O-benzyl-α-l-arabinofuranosyl chloride in the presence of a silver zeolite promoter yielded the blocked β-furanosyl amino-acid conjugates. Deprotection gavetrans-4-(β-l-arabinofuranosyloxy)-l-proline which was characterised as its crystalline isopropyl ester.13C-NMR Data are presented for the compounds described.

This publication has 32 references indexed in Scilit: