A method of synthesizing diacetylenic amides is described. The key steps of the invention include the reaction of an aldehyde with the monoanion of a diacetylene and the reductive removal of a propargylic alcohol. The invention offers the first known method of synthesizing diacetylenic amides that are naturally isolated from
Echinacea
through a direct and flexible route.
Synthesis of N-(2-methylpropyl)-2E-undecene-8,10-diynamide, a novel constituent of Echinacea angustifolia
作者:George A. Kraus、Jaehoon Bae
DOI:10.1016/s0040-4039(03)01253-x
日期:2003.7
The first synthesis of a diacetylenic amide from Echinacea is reported. The key steps included the reaction of an aldehyde with the monoanion of a diacetylene and the reductive removal of a propargylic alcohol. (C) 2003 Elsevier Science Ltd. All rights reserved.
Facile routes to natural acyclic polyenes syntheses of spilanthol and trail pheromone for termite
The synthetic procedures for spilanthol and trail-followingpheromone for a southernsubterraneantermite were described. The syntheses heavily depend on the new diene synthesis using titanium reagent.