Ketamine esters and amides as short-acting anaesthetics: Structure-activity relationships for the side-chain

Add time:08/01/2019    Source:sciencedirect.com

N-Aliphatic ester analogues of the non-opioid ketamine (1) retain effective anaesthetic/analgesic properties while minimising ketamine’s psychomimetic side-effects. We show that the anaesthetic/analgesic properties of these ester analogues depend critically on the length (from 2 to 4 carbons), polarity and steric cross-section of the aliphatic linker chain. More stable amide and ethylsulfone analogues generally showed weaker anaesthetic/analgesic activity. There was no correlation between the anaesthetic/analgesic properties of the compounds and their binding affinities for the N-methyl-d-aspartate (NMDA) receptor.

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