Spectropolarimetric and Electronic Structure Study of some Cholestanol Derivatives

摘要

In this paper, we report the spectropolarimetric measuremens at three temperatures, at least, in the range 20-35℃ for a series of eight cholestanol derivatives. In all our compounds, the nature (aromatic or nonaromatic) of estheric radical. Substihded at the chiral center (carbon number three in cholestanol derivatives) changes only. Subslituent contrbulions to the molar rotalion according with Yamana's rules are calculated. We have used the conformational analysis to model and calculate the structures and energies (heat of formation, conformalional energy and rotational barriers) for this compounds.