Synthesis 2019; 51(19): 3683-3696
DOI: 10.1055/s-0037-1611893
paper
© Georg Thieme Verlag Stuttgart · New York

Synthesis of Acetaminophen Analogues Containing α-Amino Acids and Fatty Acids for Inhibiting Hepatotoxicity

Seunghee Jung
,
Yuya Kawashima
,
Takuya Noguchi
,
Nobuyuki Imai
Faculty of Pharmacy, Chiba Institute of Science, 15-8 Shiomi-cho, Choshi, Chiba 288-0025, Japan   eMail: nimai@cis.ac.jp
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Publikationsverlauf

Received: 13. Mai 2019

Accepted after revision: 27. Juni 2019

Publikationsdatum:
15. Juli 2019 (online)


Dedicated to Professor E. J. Corey on the occasion of his 90th birthday.

Abstract

Acetaminophen is a popular antipyretic analgesic medicine that has weaker anti-inflammatory properties and lower incidence of side effects than nonsteroidal anti-inflammatory drugs (NSAIDs). However, acetaminophen causes hepatotoxicity due to the reactive metabolite N-acetyl-p-benzoquinone imine (NAPQI). We have obtained acetaminophen analogues in 57–99% yields by using aniline derivatives with protected α-amino acids and fatty acids via the corresponding mixed carbonic carboxylic anhydrides in aqueous MeCN. We have also succeeded in synthesizing AM404 analogues in 76–97% yields, which are expected to be promising candidates for reducing hepatotoxicity.