Synthesis, biological evaluation and molecular modeling study of thiadiazolo[3,2- a ][1,3]diazepine analogues of HIE-124 as a new class of short acting hypnotics

1区 · 医学

Article

作者: Shahenda M. El-Messery ; Hussein I. El-Subbagh ; Ghada S. Hassan ; Kamal E.H. El-Taher ; Mohamed M. Hefnawy ; Alaa A.-M. Abdelaziz ; Adel S. Al-Azab

A new series of 6,7-dihydro-[1,3,4]thiadiazolo[3,2-a][1,3]diazepine analogues were synthesized, and biological evaluated. Compound GS-62 (33) exhibited potent in vivo short acting hypnotic activity with onset time, duration of sleep and therapeutic index of 6.4 ± 0.2, 94.8 ± 5.3 min, 6.62, respectively), in comparison to thiopental sodium (6). Compounds 33 did not show any sign of acute tolerance reported with the maintenance dose of 6. Meanwhile 33 potentiated the in vivo hypnotic effect of 6 in an equimolar amounts (0.06 mmol) combination showing an onset and duration of 7.5 ± 1.3, 62.5 ± 5.9 min, respectively. This combination allowed the use of lower doses of both drugs to avoid the undesirable side effects. Docking studies revealed favorable interactions and binding to BDZ binding site of the GABA_A receptor especially with Arg87, Arg149, and Thr151 amino acid residues.

2010-07-01·Analytica Chimica Acta2区 · 化学

Novel, selective sample stacking microemulsion electrokinetic capillary chromatography induced by reverse migrating pseudostationary phase for the determination of the new ultra-short acting hypnotic “HIE-124” in mice serum

2区 · 化学

Article

作者: Sabry Attia ; Mohammed Al-Omar ; Ehab Abourashed ; Saeed Julkhuf ; Hussein El-Subbagh ; Mohamed Hefnawy

Microemulsion electrokinetic capillary chromatography (MEEKC) with sample stacking induced by reverse migrating pseudostationary phase (SRMP) technique in a suppressed electro-osmotic flow (EOF) strategy was investigated for analysing the new ultra-short hypnotic HIE-124 in mice serum. The proposed method utilized fused-silica capillary with a total length of 50 cm (effective length 40 cm), applied voltages for stacking and separation were 5.0 kV for 4.30 min and subsequently 25 kV, respectively, with a sample injection of 0.5 psi for 90 s. All the runs were carried out at 25 degrees C and detected at 213 nm. The optimum microemulsion background electrolyte (BGE) solution consisted of 0.8% (v/v) ethyl acetate, 6.6% (v/v) butan-2-ol, 1.0% (v/v) acetonitrile, 2.0% (w/v) sodium dodecyl sulfate (SDS), and 89.6 mL with 25 mM phosphate buffer pH 8. When this preconcentration technique was used, the sample stacking and the separation processes took place successively with changing the voltage with an intermediate polarity switching step. The proposed method was validated carefully with respect to high specificity of the method, good linearity (r=0.9994), fair wide linear concentration range (66-1500 ng mL(-1)), limit of detection and quantitation were 21.6 and 65.5 ng mL(-1), respectively. The mean relative standard deviation (RSD) of the results of intra- and inter-day precision and accuracy were less than 6.0%, and overall recovery higher than 95% of HIE-124 in mice serum. The developed method could be used for the trace analyses of HIE-124 in serum and was finally used for the pharmacokinetic study investigation of HIE-124 in mice serum.

2008-01-01·Bioorganic & Medicinal Chemistry Letters4区 · 医学

New ultra-short acting hypnotic: Synthesis, biological evaluation, and metabolic profile of ethyl 8-oxo-5,6,7,8-tetrahydro-thiazolo[3,2-a][1,3]diazepin-3-carboxylate (HIE-124)

4区 · 医学

Article

作者: Justice Tettey ; Alaa A.-M. Abdel-Aziz ; Ghada S. Hassan ; Adnan A. Kadi ; Hussein I. El-Subbagh ; Jochen Lehmann ; Hassan A. El-Kashef

Ethyl 8-oxo-5,6,7,8-tetrahydro-thiazolo[3,2-a][1,3]diazepin-3-carboxylate (HIE-124, 4) is a member of a new generation of ultra-short acting hypnotics. HIE-124 (4) exhibited potent in vivo activity with a rapid onset of action and a short duration of action, with no acute tolerance or noticeable side effects. The metabolic profile of 4 is also performed. HIE-124 (4) has the potential use as a preanesthetic medication, anesthesia inducer, and could be used with thiopental sodium to maintain anesthesia for longer duration.

100 项与 HIE-124 相关的药物交易

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