关键词: 激子, 手征性, 多氧取代环己烯, 绝对构型, 天然产物, 环己烯P, 动力学, 圆振二向色性

Polyoxygenated cyclohexenes are a relatively special group of natural products, which usually contain four chiral carbons and thus have different stereochemistries. Although a part of the absolute configuration of compounds have been determined by the preparation of the derivatives, most of the absolute configurations of the known compounds haven't been identified. In the present paper, on the basis of the established overall relative confirgurations of the molecules, circular dichroism (CD) spectroscopy-excition coupling was applied for the first time to deteermining the absolute configurations of this class of compounds. A molecular mechanics calculation was made using Alchemy program. The spectral circular dichroism features of this class compounds are discussed.

Key words: EXCITONS, CHIRALITY, ABSOLUTE CONFIGURATION, NATURAL PRODUCTS, CYCLOHEXENE P, DYNAMICS, CIRCULAR DICHROISM