Comparison between Optimized and Crystal Structures of R5135, a Potent Steroidic GABA-A Antagonist: Ab Initio Molecular Orbital Charge Population Analysis

Thierry Boulanger, Daniel Vercauteren, Guy Evrard, François Durant

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The molecular structure of hydroxy-3α imino-16 5β-aza-17 androstanone-11, R5135, a potent steroidic GABA-A antagonist, has been optimized using the semi-empirical MNDO method. Its crystal structure has been solved by X-ray diffraction. Theoretical and experimental structural results are compared. Using both geometries, ab initio MO calculations have been applied within the STO-3G basis set to quantify the electronic structure. The results of the Mulliken charge population analysis show a good agreement between the computed atomic charges and interatomic overlap populations for both structures. These values are finally compared with those reported earlier for GABA.
    Original languageEnglish
    Pages (from-to)315-322
    Number of pages8
    JournalJournal of molecular structure
    Volume212
    DOIs
    Publication statusPublished - 1989

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