Synthesis of Optically Active β,γ-Unsaturated α-Amino Acids and of α,β-Unsaturated γ-Amino Acids. SN2- vs. SN2’-Dichotomy of the Mitsunobu Amination of Allylic Alcohols
Total synthesis of (−)-cleistenolide and formal synthesis of herbarumin I via a diastereoselective modulable allylation
作者:Pol Karier、Gheorghe C. Catrinescu、Nicolas Diercxsens、Koen Robeyns、Michael L. Singleton、István E. Markó
DOI:10.1016/j.tet.2018.10.063
日期:2018.12
A modulable tin based allylation method for the synthesis of 1,2,3-triols is described. The optimization of the reaction was aided by 1H and 119Sn low temperature NMR spectroscopic investigations, which support the formation of two cyclic intermediates after transmetallation. Depending on the nature of the Lewis acid, either syn/anti or anti/syn configured triols could be obtained with good stereocontrol
A stereocontrolled synthetic route to the C1C18 subunit of pamamycin-607
作者:Sung Ho Kang、Joon Won Jeong
DOI:10.1016/s0040-4039(02)00655-x
日期:2002.5
The C1 C18 subunit 2 of the 16-membered macrodiolide pamamycin-607 has been synthesized stereo selectively using the Ag2CO3-mediated intramolecular iodoetherification for the two cis-2,5-disubstituted tetrahydrofurans, crotylation and cuprate epoxide opening for the hydroxyl and methyl substituents. (C) 2002 Elsevier Science Ltd. All rights reserved.