Anileridine

Absorption

Anileridine is absorbed by all routes of administration.

Toxicity

Symptoms of overexposure include dizziness, perspiration, a feeling of warmth, dry mouth, visual difficulty, itching, euphoria, restlessness, nervousness and excitement have been reported.

Originator

Leritine HCl,Merck Sharp and Dohme,US,1958

The Uses of Anileridine

A synthetic analgesic drug. 4-phenylpiperidine derivative that is an analog of Meperidine (M223900) with increased analgesic activity.

Background

Anileridine is a synthetic opioid and strong analgesic medication. It is a narcotic pain reliever used to treat moderate to severe pain. Narcotic analgesics act in the central nervous system (CNS) to relieve pain. Some of their side effects are also caused by actions in the CNS.

Indications

For treatment and management of pain (systemic) and for use as an anesthesia adjunct.

Definition

ChEBI: A piperidinecarboxylate ester that is the ethyl ester of isonipecotic acid in which the hydrogen alpha- to the carboxyl group is substituted by a phenyl group, and the hydrogen attached to the nitrogen is substituted by a 2-(4-aminophenyl) thyl group.

Manufacturing Process

A mixture of 7.8 grams (0.05 mol) of β-(p-aminophenyl)ethyl chloride hydrochloride, 12.5 grams (0.025 mol) of 4-phenyl-4-carboethoxypiperidine carbonate, 10.5 grams (0.125 mol) sodium bicarbonate, and 100 cc of anhydrous ethanol are mixed, stirred and heated under reflux for a period of approximately 40 hours and then concentrated in vacuum to dryness. The residual material is triturated with 50 cc of water, decanted, washed by decantation with an additional 50 cc of water, and then dried in vacuum to give N-[β-(p-aminophenyl)ethyl]-4-phenyl-4-carboethoxypiperidine.
The N-[β-(p-aminophenyl)ethyl]-4-phenyl-4-carboethoxypiperidine is dissolved in 50 cc of hot anhydrous ethanol, an excess (about 20 cc) of 20% alcoholic hydrochloric acid solution is added; upon scratching the side of the container crystals form. One hundred cubic centimeters of ether are then added to the mixture, the ethereal mixture is cooled, and the crystalline material which precipitates is recovered by filtration, washed with ether, and dried to give 12.7 grams of N-[β-(p-aminophenyl)ethyl]-4-phenyl-4-carboethoxypiperidine dihydrochloride which can be further purified by recrystallization from ethanol or methanal to give substantially pure material; MP 275-277°C.

brand name

Leritine (Merck).

Therapeutic Function

Narcotic analgesic

Pharmacokinetics

Anileridine, a potent analgesic, is an analog of pethidine. Anileridine is useful for the relief of moderate to severe pain. It may also be used as an analgesic adjunct in general anesthesia in the same manner as meperidine to reduce the amount of anesthetic needed, to facilitate relaxation, and to reduce laryngospasm. In addition, anileridine exerts mild antihistaminic, spasmolytic and antitussive effects. Anileridine's main pharmacologic action is exerted on the CNS. Respiratory depression, when it occurs, is of shorter duration than that seen with morphine or meperidine when equipotent analgesic doses are used.

Safety Profile

Poison by ingestion,subcutaneous, intravenous, and intraperitoneal routes.When heated to decomposition it emits toxic fumes ofNO_x.

Metabolism

Hepatic