## Crystals of the tetrasaccharide, (2,3,4,6-tetra-0acetyl-fi-D-ghxopyranosyl~-(1 + 3)-[2,3,4,6-tetra-O-acetyI+LD-gIucopyranosyI-(1 --t 6)]-(2,4-di-0-acetyl-g\_D-glucopyranosyl)-1 --) 3)-1,2,4,6-tetrad-acetyl$?-n-ghicopyranose, belong to tge monoclinic system, space group P2,, with a = 12.709(4),
(1S,3R,4R)-1,3,4,6-Tetra-O-acetyl-2-O-methylsulfonyl-α-d-mannopyranoside
✍ Scribed by Liu, Chun-Yan ;An, Qi ;Li, Hui
- Publisher
- International Union of Crystallography
- Year
- 2007
- Tongue
- English
- Weight
- 118 KB
- Volume
- 63
- Category
- Article
- ISSN
- 1600-5368
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📜 SIMILAR VOLUMES
In the title compound, C 20 H 18 O 6 S, the pyranoside ring adopts a distorted conformation (E2 oriented 4 C 1 ). The presence of a fused cis-carbonate alters the conformation of the pyranose ring from the normal 4 C 1 chair conformation.
Two independent molecules comprise the asymmetric unit of the title compound, C 15 H 19 F 3 O 12 S, which was synthesized by reacting 1,3,4,6-tetra-O-acetyl--d-mannopyranose with trifluoromethanesulfonic anhydride. In one molecule three F atoms and one O of the -SO 2 CF 3 side chains are disordered
The title compound, C 14 H 19 NO 10 , forms strong hydrogen bonds via amido groups in the [100] direction; soft CÐHÁ Á ÁO bonds also act to give chains along both [100] and [001], which combine to form a two-dimensional layer.
## Abstract Methyl‐2‐acetamido‐4,6‐di‐__O__‐acetyl‐3‐__S__‐acetyl‐2‐deoxy‐3‐thio‐α‐D‐mannopy‐ranoside has been synthesized by conversion of methyl 2‐amino‐2‐deoxy‐4,6‐__O__‐benzylidene‐α‐D‐altropyranoside into the corresponding 3‐__O__‐methanesulfony1‐2‐__N__‐[(methylthio)thiocarbonyl]derivative fo