The 3-O-But-2-ynoyl-28-O'-acetylbetulin

The aim of the work was the synthesis of a new 28-acetylbetulin derivative containing an ester group with a carbon-carbon triple bond in the C3 position. To obtain the title compound, a reaction of 28-acetylbetulin with but-2-ynoic acid was carried out according to the Steglich method. The synthetized compound was fully characterized by analyzing the nuclear magnetic resonance spectra (H-1-NMR, C-13-NMR), as well as the heteronuclear single quantum coherence (HSQC), and by conducting a heteronuclear multiple bond coherence (HMBC) experiment. Infrared (IR) spectroscopy and high-resolution mass spectrometry (HRMS) were also performed. Additionally, pharmacokinetic parameters and drug similarity of the studied molecule were calculated using in silico methods.