Aromatic compounds Carboxylation 4 Celastraceae 4 Crystal structure 4 Crystallography, X-Ray 4 Hydrogen Bonding 4 Hydrogen bonds 4 Maytenus 4 Maytenus boaria 4 Metabolites 4 Musculoskeletal system 4 NMR 4 Nuclear magnetic resonance 4 Organic pollutants 4 Organic solvents 4 Secondary metabolites 4 Sesquiterpenes 4 Stereoisomerism 4 X ray crystallography 4 chemistry 4 crystal structure 4 dihydro-β-agarofuran 4 hydrogen bond 4 isolation and purification sesquiterpene 4 stereoisomerism 4 Acetate groups 2 Chirality 2 DSC 2 Furans 2