Die aus dem Bis‐diazoketon (I) zugänglichen Heptodiulosen (III) ergeben bei der Behandlung mit Acetat‐Ionen unter verschiedenen Bedingungen die Cyclisierungsprodukte (IV)‐(VIII).
Die aus dem Bis‐diazoketon (I) zugänglichen Heptodiulosen (III) ergeben bei der Behandlung mit Acetat‐Ionen unter verschiedenen Bedingungen die Cyclisierungsprodukte (IV)‐(VIII).
Optically active two pseudo-sugars, pseudo-α-d-glucose and pseudo-β-l-altrose have been synthesized by cyclization of 2,3,4-tri-O-benzyl-5-deoxy-5-iodo-l-arabinose with dimethyl malonate in the presence of sodium hydride as a key reaction.
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