Cyclopropylidene-acetic acid (1R,2S,5R)-2-isopropyl-5-methyl-cyclohexyl ester

(4S,2E)-4-tert-butoxycarbonylamino-2-methyl-5-phenyl-2-pentenoic acid (1R,2S,5R)-(-)-menthyl ester

(-)-5,11,17,23-tetrakis-tert-butyl-25,27-bis(diphenylphosphinooxy)-26-ethoxy-28-[(1R,2S,5R)menthyloxycarbonylmethoxy]calix[4]arene