Acta Cryst. (2012). E68, o41-o42 [ doi:10.1107/S1600536811051890 ]
Abstract: In the crystal structure of kallolide A acetate pyrazoline [systematic name: 7-methyl-16-oxo-4,10-bis(prop-1-en-2-yl)-17,18-dioxa-14,15-diazatetracyclo[22.214.171.124,9.01,12]octadeca-6,8,14-trien-5-yl acetate], C23H28N2O5, there is a 12-membered carbon macrocyclic structure. In addition, there is a trisubstituted furan ring, an approximately planar -lactone ring [maximum deviation of 0.057 (3) Å] and a pyrazoline ring, the latter in an envelope conformation. The pyrazoline and the -lactone rings are fused in a cis configuration. In the crystal, molecules are linked by weak C-HO interactions, forming a two-dimensional network parallel to (001). An intramolecular C-HO hydrogen bond is also present.
Hyper-Text Markup Language (HTML) file
Chemical Markup Language (CML) file
To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.
The download button will force most browsers to prompt for a file name to store the data on your hard disk.
Where possible, images are represented by thumbnails.
Copyright © International Union of Crystallography