Artículos de revistas
Characterisation And Properties Of The Inclusion Complex Of 24-epibrassinolide With β-cyclodextrin
Registro en:
Plant Growth Regulation. , v. 37, n. 3, p. 233 - 240, 2002.
1676903
10.1023/A:1020842727497
2-s2.0-0036662369
Autor
De Azevedo M.B.M.
Zullo M.A.T.
Alderete J.B.
De Azevedo M.M.M.
Salva T.J.G.
Duran N.
Institución
Resumen
This paper reports the first study of an inclusion complex of a brassinosteroid with β-cyclodextrin. The formation of inclusion complexes between 24-epibrassinolide and β-cyclodextrin was confirmed by their physicochemical properties and the compounds were analysed by differential scanning calorimetry, powder X-ray diffraction, nuclear magnetic resonance spectrometry and scanning electron microscopy. Theoretical calculations using the MM+ HyperChem force field showed a preference for inclusion of the side chain of the epibrassinolide molecule into the β-cyclodextrin cavity to form a 1:1 inclusion complex, although complexes involving inclusion of the steroidal nucleus also possess a favourable interaction energy. Rice lamina inclination assay, employing IAC-103 and IAC-104 cultivars, showed an improved activity for the epibrassinolide-cyclodextrin complex compared to the epibrassinolide itself. 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