{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,1,12]],"date-time":"2025-01-12T05:16:25Z","timestamp":1736658985862,"version":"3.32.0"},"reference-count":0,"publisher":"International Union of Crystallography (IUCr)","issue":"5","license":[{"start":{"date-parts":[[2006,4,13]],"date-time":"2006-04-13T00:00:00Z","timestamp":1144886400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"},{"start":{"date-parts":[[2006,4,13]],"date-time":"2006-04-13T00:00:00Z","timestamp":1144886400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/2.0\/uk\/legalcode"}],"content-domain":{"domain":["iucr.org","wiley.com","iucrj.org"],"crossmark-restriction":true},"short-container-title":["Acta Crystallogr E Struct Rep Online","Acta Crystallogr E","Acta Cryst E","Acta Cryst E Struct Rep Online","Acta Cryst Sect E","Acta Cryst Sect E Struct Rep Online","Acta Crystallogr Sect E","Acta Crystallogr Sect E Struct Rep Online"],"accepted":{"date-parts":[[2006,4,5]]},"published-print":{"date-parts":[[2006,5,1]]},"abstract":"<jats:p>Determination of the crystal structure of the title compound [systematic name: 9,25-dibenzyl-4,4,15,15,20,20,31,31-octamethyl-3,5,14,16,19,21,30,32-octaoxa-8,11,24,27-tetraazapentacyclo[27.3.0.0<jats:sup>2,6<\/jats:sup>.0<jats:sup>13,17<\/jats:sup>.0<jats:sup>18,22<\/jats:sup>]dotriacontane-7,10,23,26-tetrone], C<jats:sub>42<\/jats:sub>H<jats:sub>56<\/jats:sub>N<jats:sub>4<\/jats:sub>O<jats:sub>12<\/jats:sub>, a cyclic tetramer, established the relative stereochemistry of its ten stereogenic C atoms; an interesting saddle-like conformation is adopted. There are two molecules in the asymmetric unit. With the exception of the phenyl and isopropylidene groups, the molecules are related by a non-crystallographic twofold rotation axis. There are varying degrees of disorder in the isopropylidene groups.<\/jats:p>","DOI":"10.1107\/s1600536806012487","type":"journal-article","created":{"date-parts":[[2006,5,6]],"date-time":"2006-05-06T10:58:18Z","timestamp":1146913098000},"page":"o1851-o1853","update-policy":"https:\/\/doi.org\/10.1107\/cm_01","source":"Crossref","is-referenced-by-count":1,"title":["<i>cyclo<\/i>{[(6-Amino-6-deoxy-2,3:4,5-di-<i>O<\/i>-isopropylidene-<scp>D<\/scp>-galactonic acid)-(<scp>D<\/scp>-Phe)]<sub>2<\/sub>}"],"prefix":"10.1107","volume":"62","author":[{"given":"Richard","family":"Bream","sequence":"first","affiliation":[]},{"given":"David","family":"Watkin","sequence":"additional","affiliation":[]},{"given":"Raquel","family":"Soengas","sequence":"additional","affiliation":[]},{"given":"George W. 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