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Perrakis, A. et al.

Molecular, crystal and solution structure of a beta-cyclodextrin complex with the bromide salt of 2-(3-dimethylaminopropyl)tricyclo[3.3.1.1(3,7)]decan-2-ol, a potent antimicrobial drug.

The pharmacological properties of a cyclomaltoheptaose (beta-cyclodextrin) series of adamantane-group-bearing compounds that exhibit potent antibacterial activity have been studied, both isolated and in complex with beta-cyclodextrins (betaCDs). In this work, the structure of the bromide salt of 2-(3-dimethylaminopropyl)-tricyclo[3.3.1.1(3,7)]decan-2-ol(A DM-10) complexed with betaCD and ten water molecules was studied in the solid state by X-ray crystallography and in solution by NMR spectroscopy. X-ray crystallographic studies of the complex were performed both at room and cryogenic temperatures. The long aliphatic chain of ADM-10 adopts a single conformation at low temperature in contrast to what is observed at room temperature, where two side chain conformations are seen. Both NMR and X-ray crystallography studies indicate that the adamantane moiety of ADM-10 is buried in the betaCD cavity. Chemical shifts in NMR experiments can be explained on the basis of the crystal structure of the complex.[1]

References

Molecular, crystal and solution structure of a beta-cyclodextrin complex with the bromide salt of 2-(3-dimethylaminopropyl)tricyclo[3.3.1.1(3,7)]decan-2-ol, a potent antimicrobial drug. Perrakis, A., Antoniadou-Vyza, E., Tsitsa, P., Lamzin, V.S., Wilson, K.S., Hamodrakas, S.J. Carbohydr. Res. (1999) [Pubmed]

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