Total Synthesis of Pentabromo- and Pentachloropseudilin, and Synthetic Analogues-Allosteric Inhibitors of Myosin ATPase
作者:René Martin、Anne Jäger、Markus Böhl、Sabine Richter、Roman Fedorov、Dietmar J. Manstein、Herwig O. Gutzeit、Hans-Joachim Knölker
DOI:10.1002/anie.200903743
日期:2009.10.12
Stopping myo: The total syntheses of the title compounds have been achieved using a highly efficient silver(I)‐catalyzedcyclization of N‐tosyl‐homopropargylamines. The pseudilin derivatives represent a novel class of myosin inhibitors. A new allosteric binding pocket of the Dictyostelium myosin‐2 motor domain has been identified for pentabromopseudilin (1) by using an X‐ray crystal structure determination
Hg/Pt-catalyzed conversion of bromo alkynamines/alkynols to saturated and unsaturated γ-butyrolactams/lactones via intramolecular electrophilic cyclization
Convenient and general Hg(II)/Pt(IV) catalyzed syntheses of γ-butyrolactams and α,β-unsaturated γ-butyrolactones/lactams are described via intramolecular electrophilic cyclizations of bromoalkynes with tosylamino and hydroxyl tethers. The reaction features the use of wet solvents, the exclusion of any base and additive, mild conditions and practical yields. We also synthesised few chiral lactams through