Delving into the Latest Updates on Cyclobutyl gababutin with Synapse

Overview

Basic Info

Drug Type

Small molecule drug

Synonyms-

Target

Mechanism

GABRA2 modulators(Gamma-aminobutyric acid A receptor alpha-2 modulators), GABRD modulators(gamma-aminobutyric acid type A receptor subunit delta modulators)

Therapeutic Areas

Nervous System Diseases

Active Indication-

Inactive Indication

Neuralgia

Originator Organization

Pfizer Inc.

Active Organization-

Inactive Organization

Pfizer Inc.

Drug Highest PhaseDiscontinuedPhase 1

First Approval Date-

Regulation-

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Recently, a number of fentanyl analogs have been implicated in overdose deaths in Europe and in the US. So far, little is known of the molecular behavior of the structurally related subgroup; the alicyclic fentanyls. In this study, reference standards of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and 2,2,3,3-tetramethylcyclopropyl fentanyl (TMCPF) at a final concentration of 5 µM were incubated with cryopreserved human hepatocytes (1 × 10⁶ cells/mL) for 0, 1, 3 and 5 h. The metabolites formed were identified by liquid chromatography-quadrupole time-of-flight mass spectrometry analysis. The most abundant biotransformation found was N-dealkylation (formation of normetabolites) and oxidation of the alicyclic rings. As ring size increased, the significance of N-dealkylation decreased in favor of alicyclic ring oxidation. An example of this was cyclopropyl fentanyl, with a three-carbon ring, whose normetabolite covered 82% of the total metabolic peak area and no oxidation of the alicyclic ring was observed. In contrast, TMCPF, with a seven-carbon ring structure, rendered as much as 85% of its metabolites oxidized on the alicyclic ring. Other biotransformations found included oxidation of the piperidine ethyl moiety and/or the phenethyl substructure, glucuronidation as well as amide hydrolysis to form metabolites identical to despropionyl fentanyl. Taken together, this study provides a base for understanding the metabolism of a number of structurally related fentanyl analogs formed upon intake.

100 Deals associated with Cyclobutyl gababutin

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