A new approach to the synthesis of optically active pseudo-sugar and pseudo-nucleoside. Syntheses of pseudo-.ALPHA.-D-arabinofuranose, (+)-cyclaradine, and (+)-1-pseudo-.BETA.-D-arabinofuranosyluracil from D-arabinose.
A new approach to the synthesis of optically active pseudo-sugar and pseudo-nucleoside. Syntheses of pseudo-.ALPHA.-D-arabinofuranose, (+)-cyclaradine, and (+)-1-pseudo-.BETA.-D-arabinofuranosyluracil from D-arabinose.
Facile syntheses of pseudo-α-d-arabinofuranose, and two pseudo-d-arabinofuranosylnucleosides, (+)-cyclaradine and (+)-1-pseudo-β-d-arabinofuranosyluracil, from d-arabinose
efficiently synthesized fromd-arabinose by using a stereoselective nitromethane addition reaction to form a branched nitropyranose (6) as a key step. Furthermore, two biologically active pseudo-β-d-arabinofuranosylnucleosides, (+)-cyclaradine and (+)-1-pseudo-β-d-arabinofuranosyluracil, were also synthesized from the nitrocyclopentene derivative (12), which was prepared from a synthetic intermediate