Total synthesis and<i>in vivo</i>evaluation of 8-deoxypumiliotoxin 193H
作者:Liga Zvejniece、Maija Dambrova、Gints Smits
DOI:10.1080/14786419.2019.1636244
日期:2021.2.1
Abstract The totalsynthesis of both the double bond isomers of indolizine alkaloid 8-deoxypumiliotoxin 193H has been accomplished. Both the double bond isomers Z-4 and E-4 induced convulsions and inhibited neuro-muscular activity at a dose of 25 mg/kg after intraperitoneal injection in mice. The lethal dose of Z-4 and E-4 was 100 mg/kg, indicating that 8-deoxypumiliotoxin 193H is 10-times less toxic
Total Synthesis of the Putative Structure of Deoxypumiliotoxin 193H by an Ireland-Claisen Rearrangement
作者:Gints Smits、Ronalds Zemribo
DOI:10.1002/ejoc.201500063
日期:2015.5
A stereoselective totalsynthesis of one diastereomer of 8-deoxypumiliotoxin 193H is described. The concise totalsynthesis features the use of readily available natural amino acids as the starting materials and the Ireland–Claisenrearrangement as the key stereochemistry controlling step.
Stereoselective synthesis of (3S,5S,6S)-tetrahydro-6-isopropyl-3,5-dimethylpyran-2-one; a C5-epimer of a component of a natural sex pheromone of the wasp Macrocentrus grandii, the larval parasitoid of the European corn borer Ostrinia nubilalis
作者:Denis Shklyaruck、Evgenii Matiushenkov
DOI:10.1016/j.tetasy.2011.08.005
日期:2011.7
(3S,5S,6S)-Tetrahydro-6-isopropyl-3,5-dimethylpyran-2-one, a C5-epimer of a component of the natural sexpheromone of the wasp Macrocentrusgrandii, the larval parasitoid of the European corn borer Ostrinia nubilalis, was synthesized starting from methyl l-valinate. The transformation includes a Kulinkovich cyclopropanation reaction, a cationic cyclopropyl-allyl rearrangement of cyclopropyl methanesulfonate