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[Conformations and interatomic distances in polymorphs of sulfanilamide]
Revista De Farmacia E Bioquimica Da Universidade De Sao Paulo
|July 1, 1976
Summary
Computational analysis of sulfanilamide polymorphs using CNDO molecular orbital methods revealed interatomic distances supporting its mechanism as a competitive antagonist to p-aminobenzoic acid.
Area of Science:
- Computational chemistry
- Molecular modeling
- Drug discovery
Context:
- Sulfanilamide is a foundational sulfa drug.
- Understanding its structure-activity relationship is crucial.
- Polymorphism affects drug properties.
Purpose:
- To calculate interatomic distances and coordinates for five sulfanilamide polymorphs.
- To validate computational methods against experimental data.
- To support the proposed mechanism of action for sulfa drugs.
Summary:
- The Complete Neglect of Differential Overlap (CNDO) molecular orbital method was employed to compute structural parameters for five sulfanilamide polymorphs.
- Calculated interatomic distances closely matched existing experimental values.
- These findings reinforce the hypothesis of competitive antagonism with p-aminobenzoic acid as the mechanism of action for sulfa drugs.
Impact:
- Provides accurate structural data for sulfanilamide polymorphs.
- Validates the CNDO method for similar molecular systems.
- Strengthens the understanding of sulfa drug's biochemical interactions.
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