δ??Galactonolactone: Synthesis, Isolation, and Comparative Structure and Stability Analysis of an Elusive Sugar Derivative

M Bierenstiel, M Schlaf

Index: Bierenstiel, Matthias; Schlaf, Marcel European Journal of Organic Chemistry, 2004 , # 7 p. 1474 - 1481

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Citation Number: 12

Abstract

Abstract δ-D-Gluconolactone, δ-D-mannonolactone, and—for the first time—the thermodynamically unstable δ-D-galactonolactone have been prepared and isolated from DMF solution by oxidizing the corresponding sugars with Shvo's catalyst [(C 4 Ph 4 CO)(CO) 2 Ru] 2 and a hydrogen acceptor. The preferred conformation of δ-D-galactonolactone in [D 6] DMSO solution has been determined by 1 H NMR spectroscopy experiments and DFT ...