Two new macrocyclic oligoboronates were prepared in easy one step syntheses from aminodialcohols and phenylboronic acid. Reaction of 2,6-pyridinedimethanol gives a tetrameric species, while 2-(salicylideneamino)-1-hydroxyethane provides a cyclobisboronate. Both compounds are characterized by using X-ray structural analyses. Possible applications in the supramolecular host-guest chemistry an discussed. (C) 1997 Elsevier Science S.A.