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Crystal and molecular structure of allyl O-(sodium 3-deoxy-α-d-manno- 2-octulopyranosylonate)-(2 → 8)-O-(sodium 3-deoxy-α-d-manno- 2-octulopyranosidonate)-monohydrate

✍ Scribed by Vincent Mikol; Paul Kosma; Helmut Brade

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
485 KB
Volume
263
Category
Article
ISSN
0008-6215

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✦ Synopsis

The alpha-(2-->8)-linked Kdo disaccharide derivative allyl O-(sodium 3-deoxy-alpha-D-manno-2-octulopyranosylonate)-(2-->8)-O-(sodium 3-deoxy-alpha-D-manno-2-octulopyranosidonate)-monohydrate C19H28O15Na2.H2O, M(r) = 542.32, is orthorhombic, P2(1)2(1)2(1) with a = 9.229(1), b = 12.036(1), c = 21.671(1) A, and Z = 4. The structure was solved by direct methods and refined to R = 0.040 for 2677 observed reflections. The torsion angles about the (2-->8)-glycosidic bond are stabilized by an intramolecular hydrogen bond between the carboxylate group at the anomeric carbon atom of the terminal Kdo residue and the hydroxyl group O-17 of the second Kdo moiety.

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