| 摘要 |
Title compds(I; X-=halogen anion; R'=acetyl, halogenated acetyl, propionyl, halogenated propionyl, butyryl, halogenated butyryl, isobutyryl, β-hydroxybutyryl, etc.; R"=amino, 2-sulfonylethylamino, (2-hydroxy-3-carboethoxy-propyl) amino, (1-carbomethoxy-2-methyl-propyl)amino, etc.) useful as central nervous system stimulators, were prepd. by condensation of II(Y=halogen) with IV. Thus, 1.98g carnitine hydrochloride was o-acetylated with propionyl chloride to give o-propionylcarnitine, which was amidated with 1.82g H-Leu-OMe by dicyclohexylcarbodiimide to give 75% I.
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