Two novel Fmoc-derived protectinggroups, Mio-Fmoc and Dio-Fmoc, were developed, which cause dramatically enhanced solubility of the corresponding derivatives in most organic solvents. Furthermore, the suitability of these groups in solid-phase peptide synthesis was highlighted.
A modular approach for the synthesis of molecular rods based on oligospiroketals has been developed. The strategy relies on different terminal and intermediate segments, which are joined by ketal formation between ketones and diols. For this purpose it was necessary to develop a new ketalization method to circumvent some problems related with the established methods. The terminal segments are either