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Updated: Sep 25, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
Published on: July 28, 2022
Structure-activity relationships of 2-(benzothiazolylthio)acetamide class of CCR3 selective antagonist
Akira Naya1, Kensuke Kobayashi, Makoto Ishikawa
1Banyu Tsukuba Research Institute, Ibaraki, Japan. nayaak@banyu.co.jp
Abstract:
The structure activity relationships of novel selective CCR3 receptor antagonists, 2-(benzothiazolylthio)acetamimde derivatives were described. A lead structure (1a) was discovered from the screening of the focused library that was based on the structure of our dual antagonists for the human CCR1 and CCR3 receptors. Derivatization of 1a including incorporation of substituent(s) into each benzene ring of the benzothiazole and piperidine side chain resulted in the identification of potent and selective compounds (1b, r, s) exhibiting nano-molar binding affinity (IC(50)s: 1.5-3.0 nM) and greater than 800-fold selectivity for the CCR3 receptor over the CCR1 receptor.
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