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Substituted cathinones, which include some stimulants and entactogens, are derivatives of cathinone. They feature a phenethylamine core with an alkyl group attached to the alpha carbon, and a ketone group attached to the beta carbon, along with additional substitutions. Cathinone occurs naturally in the plant khat whose leaves are chewed as a recreational drug.〔Colzato LS, Ruiz MJ, van den Wildenberg WP, Hommel B. (Khat use is associated with impaired working memory and cognitive flexibility. ) PLoS One. 2011;6(6):e20602. PMID 21698275. Retrieved 2011-07-17.〕 == Chemical derivatives == The derivatives may be produced by substitutions at four locations of the cathinone molecule: * R1 = hydrogen, or any combination of one or more alkyl, alkoxy, alkylenedioxy, haloalkyl or halide substituents * R2 = hydrogen or any alkyl group * R3 = hydrogen, any alkyl group, or incorporation in a cyclic structure * R4 = hydrogen, any alkyl group, or incorporation in a cyclic structure The following table displays notable derivatives that have been reported: 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「substituted cathinone」の詳細全文を読む スポンサード リンク
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