Small-Molecule Library Synthesis on Silicon-Functionalized SynPhase Lanterns

Silicon-functionalized SynPhase Lanterns are useful for the combinatorial synthesis of small-molecule libraries. Lanterns bearing an alkyl-tethered diisopropylarylsilane are first activated with triflic acid to afford the corresponding diisopropylsilyl triflate, which is then reacted with a library scaffold bearing a free alcohol. Once the scaffold has been loaded onto the solid phase, a variety of transformations can be run, including amine cappings, cross-coupling reactions, and amide bond formation. These reactions can yield a variety of products when run sequentially using split-pool synthesis strategies. Upon completion of the solid-phase transformations, the small molecules are released from the Lanterns using HF/pyridine. Using the techniques described here, libraries can be made ranging from a few compounds to >10,000 members in a highly efficient manner. Curr. Protoc. Chem. Biol. 2:135-151 © 2010 by John Wiley & Sons, Inc.

Keywords: solid-phase; combinatorial; synthesis; diversity; Lanterns; silicon