Selective hydrogenolysis of benzyl ethers in the presence of benzylidene acetals with Raney nickel
作者:Aurélie Vincent、Joëlle Prunet
DOI:10.1016/j.tetlet.2006.03.189
日期:2006.6
A simple method to remove selectively a benzyl group protecting a hydroxyl function in the presence of a benzylidene acetal by catalytic hydrogenolysis with Raneynickel is reported. This method was successfully applied to the synthesis of the C1–C14 fragment of dolabelides.
Enantioselective Synthesis of the C1-C15 Fragment of Dolabelide C
作者:Joëlle Prunet、Aurélie Vincent
DOI:10.1055/s-2006-949614
日期:2006.9
A synthesis of the C1-C15 fragment of dolabelide C is reported. The key step is a diastereoselective Mukaiyama aldol reaction to form the C6-C7 bond, followed by reduction and deoxygenation of the carbonyl group at C5. The trisubstituted vinyl iodide is introduced via the corresponding vinyl boronate by cross metathesis.