2. Academic Validation
  3. Design and synthesis of 5-[(2-chloro-6-fluorophenyl)acetylamino]-3-(4-fluorophenyl)-4-(4-pyrimidinyl)isoxazole (AKP-001), a novel inhibitor of p38 MAP kinase with reduced side effects based on the antedrug concept

Design and synthesis of 5-[(2-chloro-6-fluorophenyl)acetylamino]-3-(4-fluorophenyl)-4-(4-pyrimidinyl)isoxazole (AKP-001), a novel inhibitor of p38 MAP kinase with reduced side effects based on the antedrug concept

  • Bioorg Med Chem. 2014 Aug 1;22(15):4162-76. doi: 10.1016/j.bmc.2014.05.045.
Koichi Hasumi 1,  Shuichiro Sato 1,  Takahisa Saito 1,  Jun-ya Kato 1,  Kazuhiko Shirota 2,  Jun Sato 3,  Hiroyuki Suzuki 3,  Shuji Ohta 4
Affiliations

Affiliations

  • 1 Synthetic Research Department, ASKA Pharmaceutical Co., Ltd, 5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-shi, Kanagawa 213-8522, Japan.
  • 2 Pharmacokinetics Research Department, ASKA Pharmaceutical Co., Ltd, 5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-shi, Kanagawa 213-8522, Japan.
  • 3 Pharmacological Research Department, ASKA Pharmaceutical Co., Ltd, 5-36-1, Shimosakunobe, Takatsu-ku, Kawasaki-shi, Kanagawa 213-8522, Japan.
  • 4 Synthetic Research Department, ASKA Pharmaceutical Co., Ltd, 4-3, 3-Chome, Sakae-cho, Hamura-shi, Tokyo 205-8501, Japan. Electronic address: ohta-s@aska-pharma.co.jp.
PMID: 24938496 DOI: 10.1016/j.bmc.2014.05.045
Abstract

Inhibitors of p38 mitogen-activated protein (MAP) kinase, which are closely involved in the production of inflammatory cytokines, are considered promising curative drugs for chronic inflammatory disorders. However, there is also a growing concern regarding its systemic side effects. To reduce the occurrence of side effects, we have identified a novel p38 MAP kinase inhibitor that shows properties of an antedrug, which imparts its effect solely on the inflammatory site and is metabolically inactivated right after. We have designed isoxazole derivatives through the addition of a fresh interacting fourth site to the structure of the prototypical p38 MAP kinase inhibitor that harbors three point interactive sites. The derivative 26d (AKP-001) shows excellent p38 MAP kinase inhibitory activity and a high selectivity for various kinases. Its rapid metabolism has been confirmed in rats. Moreover, 26d has been shown to be effective in animal models of inflammatory bowel disease.

Keywords

Antedrug; IBD; Isoxazole; p38 MAP kinase.

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