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Potent Lipophilic Melatoninergic X-Fluoro-y-methoxy Substituted Phenylalkylamides: Molecular Dynamics Calculations and in Vitro Modified Release in Aqueous Media from Tablet Formulations.

CURRENT PHARMACEUTICAL DESIGN(2023)

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摘要
INTRODUCTION:We report herein on the design and development of matrix tablets containing potent synthetic melatonin (MLT) receptor analogues, the x-fluoro-y-methoxy substitiuted phenylalkylamides (compounds I-IV), the preparation and melatoninergic potency of which was recently communicated. > Methods: The presence of the fluorine atom in compounds I-IV, besides not affecting their binding affinity, compared to the pineal hormone melatonin, it also slows down their metabolism, which is a major drawback of MLT. However, as fluorine increases the lipophilicity, solid pharmaceutical formulations of I-IV, involving the appropriate biopolymers for their modified release in aqueous media, were developed in the context of the present work. > Results: The release profile of analogues I-IV was found to be similar to that of MLT and also of the commercially available drug, Circadin®. Some of these systems are suitable for dealing with sleep onset problems, whilst others for dealing with combined sleep onset/sleep maintenance problems. > Conclusion: Apart from the nature and relevant content of the formulants used, this bimodal release profile of the new analogues depends, to a large extent, on the diverse structural arrangement of their side chains in space, as nicely demonstrated by the molecular dynamics calculations, conducted in the context of this study. >.
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Melatonin
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