Synthesis of Tramadol and Analogous

  • Alvarado C
  • Guzmán Á
  • Díaz E
  • et al.
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Abstract

Abstract. Tramadol is a drug with analgesic properties. This compoundand five of its analogous were synthesized: N-demethyl (M2), O-demethyl (M1), O-ethyl-O-demethyl, O-benzyl-O-demethyl and Nbenzyl-N-demethyl. All compounds were prepared as their hydrochlorides and as racemic mixtures. The synthesis started with the aminoketones; 2-(N-benzyl, N-methyl)aminomethyl cyclohexanone and 2-dimethylaminomethyl cyclohexanone, prepared by means of a Mannich reaction of cyclohexanone, paraformaldehyde and the corresponding amino hydrochloride. The aminoketones were coupled with the organolithium compounds derived from the corresponding 3-bromoalkoxybenzenes.Resumen. El tramadol es un fármaco con propiedades analgésicas. Este compuesto y cinco de sus análogos fueron sintetizados: Ndesmetil (M2), O-desmetil (M1), O-etil-O-desmetil, O-bencil-Odesmetil y N-bencil-N-desmetil. Los compuestos fueron preparados como sus clorhidratos, en forma de mezcla racémica. La síntesis comenzó con la preparación de 2-(N-bencil, N-metil)aminometil ciclohexanona y 2-dimetilaminometil ciclohexanona mediante la reacción de Mannich de la ciclohexanona, paraformaldehido y el clorhidrato de la amina correspondiente. Las aminocetonas así obtenidas, fueron acopladas con los derivados organolitiados provenientes de la reacción de n-butillitio con los m-bromoalcoxibencenos correspondientes.

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APA

Alvarado, C., Guzmán, Á., Díaz, E., & Patiño, R. (2020). Synthesis of Tramadol and Analogous. Journal of the Mexican Chemical Society, 49(4). https://doi.org/10.29356/jmcs.v49i4.1323

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