List of methylphenidate analogues
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This is a list of methylphenidate (MPH or MPD) analogues, or Phenidates. The most well known compound from this family, methylphenidate, is widely prescribed around the world for the treatment of attention deficit hyperactivity disorder (ADHD) and certain other indications. Several other derivatives including rimiterol, phacetoperane and pipradrol also have more limited medical application. A rather larger number of these compounds have been sold in recent years as designer drugs, either as quasi-legal substitutes for illicit stimulants such as methamphetamine or cocaine, or as purported "study drugs" or nootropics.
More structurally diverse compounds such as desoxypipradrol (and thus pipradrol, including such derivatives as AL-1095, diphemethoxidine, SCH-5472 and D2PM), and even mefloquine, 2-benzylpiperidine, rimiterol, enpiroline and DMBMPP, can also be considered structurally related, with the former ones also functionally so, as loosely analogous compounds. The acyl group has sometimes been replaced with similar length ketones to increase duration. Alternatively, the methoxycarbonyl has in some cases been replaced with an alkyl group.
Dozens more phenidates and related compounds are known from the academic and patent literature, and molecular modelling and receptor binding studies have established that the aryl and acyl substituents in the phenidate series are functionally identical to the aryl and acyl groups in the phenyltropane series of drugs, suggesting that the central core of these molecules is primarily acting merely as a scaffold to correctly orientate the binding groups, and for each of the hundreds of phenyltropanes that are known, there may be a phenidate equivalent with a comparable activity profile. Albeit with the respective difference in their entropy of binding: cocaine being −5.6 kcal/mol and methylphenidate being −25.5 kcal/mol (Δs°, measured using [3H]GBR 1278 @ 25 °C).
Notable phenidate derivatives
Related compounds
A number of related compounds are known which fit the same general structural pattern, but with substitution on the piperidine ring (e.g.
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