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. Author manuscript; available in PMC: 2024 Jan 16.
Published in final edited form as: J Med Chem. 1999 Aug 12;42(16):3055–3065. doi: 10.1021/jm980688e

Figure 1.

Figure 1.

Structures of key racemic dihydropyridine A3 adenosine receptor-selective antagonists 1 and 2 and optically pure L-type calcium channel ligands 3 and 4 for which the adenosine receptor affinity has been measured. Ki values in micromolar are reported in refs 1 and 3.