Dioxa‐[40]decaphyrin(1.0.1.0.0.1.0.1.0.0): An analogue of turcasarin with a “figure‐eight” structure

The synthesis and characterization of two different furan containing analogues of turcasarin, namely 46,51 ‐dioxa‐2,11,15,20,24,33,37,42‐octapropyl‐turcasarin ( 7a ) and 46,51 ‐dioxa‐2,11,24,33‐tetrapropyl‐15,20,37,42‐tetraethyl‐16,19,38,41‐tetramethyl‐turcasarin ( 7b ) are described. While 7a was found to exhibit a “figure eight” structure in solution and in the solid state, 7b is believed to adopt a different, more symmetric conformation is solution.