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Conformation of 2-C,1-N-carbonyl-2-deoxy-α-d-glycopyranosylamines

✍ Scribed by Marek Chmielewski; Zbigniew Kaluza; Helena Dodziuk; Kinga Suwinska; Doris Rosenbaum; Helmut Duddeck; Philip D. Magnus; John C. Huffman

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 807 KB
Volume: 203
Category: Article
ISSN: 0008-6215
DOI: 10.1016/0008-6215(90)80016-v

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✦ Synopsis

The conformations of 2-C:l-N-carbonyl-2-deoxyglycopyranosylamines @-lactams) with the U-Dgluco, a+galacto, @-D-arabino, u-L-xylo, cc-L-gluco, and B-D-&O configurations have been investigated by X-ray crystallography and n.m.r. spectroscopy. The n.m.r. data, interpreted in terms of an equilibrium of two rapidly interconverting half-chair forms, were supported strongly by the diffractometric data which showed almost regular half-chair conformations. * Dedicated to Professor Aleksander Zamojski on the occasion of his 60th birthday.

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