The crystal structure of the title bicyclic lactam, C 6 H 9 NO 4 , has ®rmly established the stereochemistry of the branched -sugar amino acid scaffold.
(2R,5S)-2-Trichloromethyl-3-oxa-1-azabicyclo[3.3.0]octane-4,8-dione
✍ Scribed by Punzo, Francesco ;Watkin, David J. ;Pike, Richard ;Moloney, Mark ;Panchal, Terry
- Publisher
- International Union of Crystallography
- Year
- 2004
- Tongue
- English
- Weight
- 322 KB
- Volume
- 61
- Category
- Article
- ISSN
- 1600-5368
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Single-crystal X-ray study T = 94 K Mean '(C±C) = 0.002 A Ê R factor = 0.035 wR factor = 0.087 Data-to-parameter ratio = 10.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
In the title compound, C 18 H 11 Cl 2 NO 2 , the succinimide and cyclobutene rings are individually planar, with a dihedral angle of 66.02 ( 14) between them. The crystal structure is stabilized by CÐHÁ Á Á% interactions involving the phenyl rings.
Single-crystal X-ray study T = 298 K Mean '(C±C) = 0.003 A Ê R factor = 0.047 wR factor = 0.144 Data-to-parameter ratio = 15.0 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.
Single-crystal X-ray study T = 294 K Mean '(C±C) = 0.003 A Ê R factor = 0.036 wR factor = 0.091 Data-to-parameter ratio = 7.9 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.