The title compound, C 21 H 23 BrN 4 O 8 , is a glycoluril derivative in which the oxadiazinane six-membered ring displays a normal chair conformation. The methoxy and Br groups attached to the phenyl ring are disordered in a 0.847 (4):0.153 (4) ratio and the pendant ethoxy group is disordered over t
Pentamethyl 11,11a-dihydro-9-oxo-9H,10H-cyclobuta[4,5]cyclopenta[3,4]pyrrolo[1,2-a]quinoline-7,8,10,11,11a-pentacarboxylate
✍ Scribed by Abbott, P. J. ;Acheson, R. M. ;Forder, R. A. ;Watkin, D. J. ;Carruthers, J. R.
- Book ID
- 114523503
- Publisher
- International Union of Crystallography
- Year
- 1976
- Weight
- 324 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0567-7408
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📜 SIMILAR VOLUMES
In the molecule of the title compound, C 20 H 20 Br 2 N 4 O 7 , one ethyl group is disordered over two positions; site-occupation factors were fixed at 0.63 and 0.37. The non-planar seven-and six-membered rings adopt chair conformations, while the two five-membered rings have envelope conformations.
In the title compound, C 20 H 21 N 5 O 9 , the dihedral angle between the two five-membered rings of the glycoluril system is 68.79 ( 14) and the crystal structure is stabilized by intermolecular C-HÁ Á ÁO interactions.