Cycloaddition reactions of carbohydrate derivatives. Part 8: Intramolecular cycloaddition of nitrilimines derived from sugars
摘要:
Nitrilimines containing a carbon-carbon double bond were prepared in several steps from 3,3,4-tri-O-benzyl-D-xylose, D-ribose and L-arabinose derivatives and their intramolecular 1,3-dipolar cycloaddition reactions were studied. The results were examined with molecular modelling and compared with the literature data for similar cycloadditions. (C) 2001 Elsevier Science Ltd. All rights reserved.
Pentodialdose mercaptal derivatives: New chiral C5 synthetic building blocks
摘要:
Three tribenzyloxy derivatives of the title compounds with D-xylo, L-arabino and D-lyxo configuration were prepared from naturally abundant hexoses in five steps.