88980-13-6Relevant articles and documents
Diastereoselective oxygen to carbon rearrangements of anomerically linked enol ethers and the total synthesis of (+)-(S,S)-(cis-6-methyltetrahydropyran-2-yl)acetic acid, a component of civet
Dixon, Darren J.,Ley, Steven V.,Tate, Edward W.
, p. 2385 - 2394 (2000)
A range of enol ethers, linked via their oxygen atom to the anomeric centre of a pyran ring system, was shown to undergo oxygen to carbon rearrangement upon treatment with a Lewis acid to give the corresponding 2-carbon substituted products. At low temperature, trimethylsilyl trifluoromethanesulfonate catalysed rearrangements of anomerically linked 6-substituted tetrahydropyranyl enol ethers gave selectively the trans-pyranyl ketones, whereas at higher temperatures selective formation of the cis-pyranyl ketones was observed. In a simple application of the methodology the cis-selective rearrangement was used as the key step in a concise total synthesis of a constituent of civet.
An alternative total synthesis of diplodialide-B
Kalavakuntla, Chiranjeevi,Kummari, Vijaya Babu,Yadav, Jhillu Singh
, p. 3324 - 3328 (2019/11/11)
In this paper, an enantioselective synthesis of diplodialide-B has been described. To accomplish this target, a combination of regioselective ring opening of the chiral epoxide, Jacobsen hydrolytic kinetic resolution and Yamaguchi macrolactonization were used as the key steps.
A Unified Synthetic Approach to Optically Pure Curvularin-Type Metabolites
Allu, Srinivasa Rao,Banne, Sreenivas,Jiang, Jia,Qi, Na,Guo, Jian,He, Yun
, p. 7227 - 7237 (2019/06/07)
A unified and concise approach to the synthesis of nine curvularin-type metabolites and two analogues has been developed with few steps and high yields. Among them, sumalactones A-D were synthesized for the first time. The key steps in this approach inclu