Coupling constants are reported in Hz. The synthesized compounds were analyzed by the LC-MS system consisting of UHLPC Dionex Ultimate 3000 RS with a diode array detector coupled with Q Exactive Plus mass spectrometer to obtain UV purity and high-resolution mass spectra (Thermo Fisher Scientific, Bremen, Germany). Melting points were measured using an automated melting point recorder M-565 (Büchi, Switzerland). Gradient LC analysis confirmed > 95% purity.