title: Letter: Boron analogues of amino acids. Synthesis and biological activity of boron analogues of betaine.
mesh_terms: D001622:Betaine / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D001895:Boron; D008968:Molecular Conformation; D013329:Structure-Activity Relationship
chemical_list: D001622:Betaine; D001895:Boron