Synthesis of new optically active bis-pyridino- and bis pyridono-18-crown-6 type ligands containing four lipophilic chains attached to the chiral centers by "two-to-two" type macrocyclization - Gerencsér, János; Huszthy, Péter; Nógrádi, Mihály (ARKIVOC, 2003)
doi: 10.3998/ark.5550190.0005.702