Syntheses of epi-aigialomycin D and deoxy-aigialomycin C via a diastereoselective ring closing metathesis macrocyclization protocol
摘要:
Syntheses of epi-aigialomycin D and deoxly-aigialomycin C are described via a remote stereocontrolled RCM macrocyclization. (C) 2007 Elsevier Ltd. All rights reserved.
Total Synthesis of Aigialomycin D: Surprising Chemoselectivity Dependence on Alkyne Structure in Nickel-Catalyzed Cyclizations
作者:Christa C. Chrovian、Beth Knapp-Reed、John Montgomery
DOI:10.1021/ol702961v
日期:2008.3.1
The totalsynthesis of aigialomycin D was carried out using a nickel-catalyzed ynal macrocyclization as a key step. This key step allowed macrocycle assembly and formation of a disubstituted alkene and a secondary hydroxyl stereocenter in a single step, although the stereocenter was formed unselectively. An interesting side reaction involving five-membered-ring synthesis by an aldehyde/styrene cyclization