Figure 1
Identification of AF40431. (a) Chemical structure and half-maximal inhibitory concentration (IC50) values determined in the SPA assays of the hit compound 1a and its analogues (1b–1g). The stereochemistry of the samples in the compound collection was undefined [i.e. (+), (−) or (±)]. (b) Chemical structure of Calcein Blue (left) and tridentate metal (M) chelation by Calcein Blue (right). (c) Chemical structure and IC50 values determined from the SPA assay of AF40431 and its stereoisomer 1h. Chemical structure were drawn using ChemSketch (ACD/Labs; https://www.acdlabs.com
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