Jacob Joël, Geßler Katrin, Hoffmann Daniel, Sanbe Haruyo, Koizumi Kyoko, Smith Steven M, Takaha Takeshi, Saenger Wolfram
Institut für Kristallographie der Freien Universität, Takustrasse 6, D-14195 Berlin (Germany), Fax: (+49) 30-838-6702.
GMD-SCAI, Schloss Birlinghoven, Sankt Augustin (Germany).
Angew Chem Int Ed Engl. 1998 Mar 16;37(5):605-609. doi: 10.1002/(SICI)1521-3773(19980316)37:5<605::AID-ANIE605>3.0.CO;2-C.
The cavity of the larger molecule has less space for guests! Unlike the structure of the smaller annular cyclodextrins, that of the higher homologues of cycloamyloses (CAs) with more than ten glucose units contains a 90° kink between adjacent glucose residues within one half of the molecule and a 180° band flip between adjacent units in different halves (see depicted section of the CA14 structure) to yield butterfly-shaped structures with narrow, groovelike cavities.
较大分子的空腔为客体提供的空间较少！与较小的环状环糊精结构不同，具有十个以上葡萄糖单元的环糊精（CA）的高级同系物的结构在分子的一半内相邻葡萄糖残基之间包含90°扭结，并且在不同半部分的相邻单元之间存在180°带翻转（见CA14结构的图示部分），从而产生具有狭窄、槽状空腔的蝴蝶形结构。
