e.g. Filippa Pettersson or Cancer Res. 75(6) , 1102-12, (2015) or 10.1002/anie.201600521
High-yielding, regiospecific synthesis of cis (4, 4′)-di (carbomethoxybenzo)-30-crown-10, its conversion to a pyridyl cryptand and strong complexation of 2, 2′-and 4 …