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[Preprint]. 2023 May 22:2023.05.22.541727. [Version 1] doi: 10.1101/2023.05.22.541727

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Scheme 1. — Synthesis of compound 1. (a) 4-((tert-butoxycarbonyl)amino)benzoic acid, CH₂Cl₂, SOCl₂, 0–40 °C; (b) tert-butyl (4-(chlorocarbonyl)phenyl)carbamate, DIPEA, THF, 65 °C; (c) TFA, CH₂Cl₂.