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. 2022 Mar 28;13:837088. doi: 10.3389/fphar.2022.837088

FIGURE 1.

FIGURE 1

Overview of the chemical structure of LAs. (A) LAs consist of two main chemical classes: The lipophilic aromatic ring can be linked to the tertiary amine by an intermediate ester (a) or amide linkage (b). (B) Example chemical structures of LAs. The name of the selected LA and their discovery date are given below each structure.