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a) Pyrazolylthiazole (s-cis/s-trans) vs. s-cis-locked bithiazole conformational interplay where the Nβ benzyl (B) moiety can overlay the C2 thiazole aniline (A1) moiety or the C5 pyrazole amide (A2) moiety can overlay the C2 thiazole aniline (A1) moiety. b) Superimposed wireframe models of bithiazole 1 and thiazolylpyrazole 14a.
