and a favorite hit for many naturallyoccurring molecules. While two of the most successful representative agents in clinical use, the taxanes and the vinca alkaloids, come from terrestrial sources, the sea has also proven to be a rich source of new tubulin-binding molecules. We describe herein the first isolation, structural elucidation and total synthesis of two totally new polyketides isolated from
Copper-catalyzed cross-coupling of amino acid-derived amides with (Z)-vinyl iodides: Unexpected solvent effect and preparation of plocabulin
作者:Leiming Wang、Xinsheng Lei、Quanrui Wang、Yingxia Li
DOI:10.1016/j.tet.2021.131953
日期:2021.3
A copper-catalyzedcross-coupling reaction of amino acid-derived amides and (Z)-vinyl iodide was studied to improve a key step in the synthesis of plocabulin, a novel microtubule destabilizer agent of marine origin. The study revealed a profound solvent effect with 1,2-dimethoxyethane (DME), which gave consistently high yields across a large variety of the amide and (Z)-vinyl iodide substrates. The
Antitumoral compounds obtained from a porifera, of the family Raspailiidae, genus
Lithoplocamia
, species
lithistoides
, and derivatives thereof are provided.