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Sm(OTf)3 as a highly efficient catalyst for the synthesis of 2,3-unsaturated O- and S-pyranosides from glycals and the temperature-dependent formation of 4-O-acetyl-6-deoxy-2,3-unsaturated S-pyranosides and 4-O-acetyl-6-deoxy-3-alkylthio glycals

โœ Scribed by Chen, Peiran; Zhang, Dalin


Book ID
126703031
Publisher
Elsevier Science
Year
2014
Tongue
French
Weight
763 KB
Volume
70
Category
Article
ISSN
0040-4020

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X-ray crystal structures of 1,2,4-tri-O-
โœ Thomas Richter; Peter Luger; Tadashi Hanaya; Hiroshi Yamamoto ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 780 KB

X-ray crystallographic analyses are reported for the two title compounds (8 and 9), of which the former crystallized in two modifications (8n and 8b). In all three structures, the pyranose rings have the %, (D) conformation and the substituents at C-l are axial and those at C-24-4 are equatorial. Th