Efficient Construction of Cyclopenta[b]quinoline Core of Isoschizozygane Alkaloids via Intramolecular Formal Hetero-Diels−Alder Reaction
摘要:
[GRAPHICS]Acid-catalyzed condensation of aromatic amines with delta,epsilon-unsaturated aldehydes, followed by intramolecular formal hetero Diels-Alder reaction, is described as a potential route to the cyclopenta[b]quinoline substructure of isoschizozygane alkaloids. Reactions are highly diastereoselective and produce adducts with up to four contiguous stereocenters.
Efficient Construction of Cyclopenta[b]quinoline Core of Isoschizozygane Alkaloids via Intramolecular Formal Hetero-Diels−Alder Reaction
摘要:
[GRAPHICS]Acid-catalyzed condensation of aromatic amines with delta,epsilon-unsaturated aldehydes, followed by intramolecular formal hetero Diels-Alder reaction, is described as a potential route to the cyclopenta[b]quinoline substructure of isoschizozygane alkaloids. Reactions are highly diastereoselective and produce adducts with up to four contiguous stereocenters.
Intramolecular Hydroamination/Cyclization of Conjugated Aminodienes Catalyzed by Organolanthanide Complexes. Scope, Diastereo- and Enantioselectivity, and Reaction Mechanism
作者:Sukwon Hong、Amber M. Kawaoka、Tobin J. Marks
DOI:10.1021/ja036266y
日期:2003.12.1
precatalysts for the rapid, regioselective, and highly diastereoselective intramolecularhydroamination/cyclization of primary and secondary amines tethered to conjugated dienes. The rates of aminodiene cyclizations are significantly more rapid than those of the corresponding aminoalkenes. This dienyl group rate enhancement as well as substituent group (R) effects on turnover frequencies is consistent with
Efficient Construction of Cyclopenta[<i>b</i>]quinoline Core of Isoschizozygane Alkaloids via Intramolecular Formal Hetero-Diels−Alder Reaction
作者:Nabi A. Magomedov
DOI:10.1021/ol034776r
日期:2003.7.1
[GRAPHICS]Acid-catalyzed condensation of aromatic amines with delta,epsilon-unsaturated aldehydes, followed by intramolecular formal hetero Diels-Alder reaction, is described as a potential route to the cyclopenta[b]quinoline substructure of isoschizozygane alkaloids. Reactions are highly diastereoselective and produce adducts with up to four contiguous stereocenters.