Formal Synthesis of (+)‐Laurencin by Gold(I)‐Catalyzed Intramolecular Dehydrative Alkoxylation
作者:Megan L. Lanier、Hyeri Park、Paramita Mukherjee、Jacob C. Timmerman、Anthony A. Ribeiro、Ross A. Widenhoefer、Jiyong Hong
DOI:10.1002/chem.201700499
日期:2017.5.29
8‐Membered cyclic ethers are found in a wide range of naturalproducts; however, they are challenging synthetic targets due to enthalpic and entropic barriers. The gold(I)‐catalyzed intramolecular dehydrative alkoxylation of ω‐hydroxy allylic alcohols was explored to stereoselectively construct α,α′‐cis‐oxocenes and further applied in a formalsynthesis of (+)‐laurencin. The gold(I)‐catalyzed intramolecular
Highly Stereoselective and Efficient Total Synthesis of (+)-Laurencin
作者:Seungyoup Baek、Hyunil Jo、Hansoo Kim、Hyoungsu Kim、Sanghee Kim、Deukjoon Kim
DOI:10.1021/ol047877d
日期:2005.1.1
A highlystereoselective and efficient asymmetric totalsynthesis of (+)-laurencin (1) has been accomplished from the known oxazolidinone 5 in 15 steps. The route features an efficient internal alkylation to form oxocene 3 from 4 and a novel use of acetonitrile anion as a two-carbon acetaldehyde equivalent for direct synthesis of ketone 2 from alpha-alkoxy amide 3.