Synthesis of threo-β-aminoalcohols from aminoaldehydes via chelation-controlled additions. Total synthesis of l-threo sphingosine and safingol
作者:Michael E. Jung、Sung Wook Yi
DOI:10.1016/j.tetlet.2012.05.153
日期:2012.8
threo-β-amino alcohol derivatives through chelation with the carbamoyl moiety. The carbamate group is a stronger chelating group than other potentially good chelators, for example ethers, esters, thioethers, and gives good diastereoselectivity with cuprates. Thus addition of lithium divinylcuprate to the aldehyde generated from the serine derivative 25 in the presence of extra copper for chelation
Chiral combinatorial preparation and biological evaluation of unique ceramides for inhibition of sphingomyelin synthase
作者:Sajeer Koolath、Yuta Murai、Yoshiko Suga、Kenji Monde
DOI:10.1002/chir.23179
日期:2020.3
Enantiomers or diastereomers of chiral bioactive compounds often exhibit different biological and toxicological properties. Here, we report the efficient synthesis of four stereoisomers of sphingosine and derivatization of unique chiral ceramides through a combinatorial chemistry by solid‐phase activated resin ester. In addition, to test the effectivity of stereochemistry of ceramide, we demonstrated