Imidazoles Pyrroles Pyrazoles Triazoles Tetrazoles Oxazoles Isoxazoles Thiazoles Isothiazoles Thiophenes Pyridines Pyrazines Pyridazines Pyrimidines Triazines Pyrans Furans Quinolines Isoquinolines Tetrahydroquinolines Tetrahydroisoquinolines Indoles Indazoles

Cyclopropanes Cyclobutanes Cyclopentanes Cyclohexanes

Oxetanes Azetidines Imidazolidines Pyrrolidines Oxazolidines Thiazolidines Tetrahydropyrans Tetrahydrofurans Piperidines Piperazines

Boronic acids Boronic acid esters