Hypoglycemic 5-furyl and 5-thienyl derivatives of oxazolidine-2,4-dione and the pharmaceutically-acceptable salts thereof; certain 3-acylated derivatives thereof; and intermediates useful in the preparation of said compounds.
Synthesis and enzymatic resolution of novel analogs of alicyclic and heterocyclic mandelic acid derivatives
作者:Bohdan S. Sosunovych、Oleksii S. Timokhin、Olexandr V. Kucher、Nadiia Y. Demianyk、Denys V. Hys、Yelyzaveta A. Zvarych、Oleg B. Smolii、Bohdan V. Vashchenko、Oleksandr O. Grygorenko
DOI:10.1016/j.tet.2024.134068
日期:2024.7
Synthesis and enzymatic resolution of a new class of alicyclic and heterocyclic mandelic acidderivatives was described. The method relied on the preparation of cyanohydrins from the commercially available aldehydes followed by hydrolysis to corresponding racemic hydroxy esters that were used in the resolution with the enzyme. An alternative approach was proposed for compounds that were not suitable
The first total synthesis of the stress factor (+)-hydroxymyoporone (4) is presented. The key step is an asymmetric allylation of the methyl ketone 10 which proceeds with excellent selectivity and yield. In addition, it was proven that the allylation assignment of the absolute configuration of hydroxymyoporone published in the natural literature is incorrect; the correct structure of the (+)-enantiomer is depicted in the structural formula 4.