Preparation of γ-siloxyallyltributylstannanes and their use in the synthesis of (±)-1-deoxy-6,8a-di-epi-castanospermine
作者:Floris Chevallier、Erwan Le Grognec、Isabelle Beaudet、Florian Fliegel、Michel Evain、Jean-Paul Quintard
DOI:10.1039/b409507c
日期:——
gamma-siloxyallyltributylstannanes were selectively obtained as E or Z isomers from beta-tributylstannylacrolein upon reaction with lithium or magnesium alkylcyanocuprates. The ability of the reagents to give a high syn selectivity when added to iminium salts has been used for the efficient synthesis of (+/-)-1-deoxy-6,8a-di-epi-castanospermine from succinimide. The key step of the synthesis was the
作者:Liliana Boiaryna、Mohamed Kamal El Mkaddem、Catherine Taillier、Vincent Dalla、Mohamed Othman
DOI:10.1002/chem.201202225
日期:2012.10.29
applied in cascade‐type reactions for the synthesis of different nitrogen‐based compounds. The reactions likely proceed by a new gold‐catalyzed cascade intermolecular α‐amidoalkylation/intramolecular carbocyclization cascade process by unifying both the σ‐ and π‐Lewisacid properties of the gold salts. In the first part of this report we show that the σ‐Lewis acidity of gold(I) and gold(III) could be
The first total synthesis of transalpinecine is reported. The four diastereoisomers of transalpinecine as well as the two diastereoisomers of the parent epoxide subulacine were prepared, allowing revision of the initially reported transalpinecine stereochemistry. One of these synthetic compounds significantly potentiates the activity of the F508del‐CFTR corrector VX‐809.