Photolyse stereospecifique d'(oxo-3butyl)-tetra--acetyl-2, 3, 4, 6-β--glucopyranoside en spiro-C-1-sucre

Resume Photolysis of (3-oxo butyl)-2,3,4,6-tetra-O-acetyl- β -D-glucopyranoside leads by a stereospecific cyclisation to a C-1-spiro sugar; the conformation of the anomeric carbon is retained.