Total Syntheses of
<i>rac</i>
‐ and (+)‐Goniomitine
作者:Eunjoon Park、Cheol‐Hong Cheon
DOI:10.1002/adsc.201900801
日期:2019.11.5
Concise totalsyntheses of rac‐ and (+)‐goniomitine were developed. The cyanide‐catalyzed imino‐Stetter reaction of an aldimine, derived from ethyl 2‐aminocinnamate and either rac‐ or (S)‐α,β‐unsaturated aldehyde bearing a δ‐valerolactam at the β‐position, provided rac‐ or (S)‐indole‐3‐acetate carrying an α‐vinyl‐δ‐valerolactam scaffold at the 2‐position, respectively. Subsequent saturation of the
A general strategy for the synthesis of indoloquinolizine alkaloids <i>via</i> a cyanide-catalyzed imino-Stetter reaction
作者:Eunjoon Park、Cheol-Hong Cheon
DOI:10.1039/c7ob02691a
日期:——
A new strategy applicable to the synthesis of indoloquinolizine natural products has been developed. A cyanide-catalyzed intramolecular imino-Stetter reaction of aldimines, derived from 2-aminocinnamic acid derivatives and 2-pyridinecarboxaldehydes, provided indole-3-acetic acid derivatives bearing a pyridyl ring at the 2-position. Reduction of the carboxylic acid moiety to an alcohol followed by activation
Synthesis of 2-Vinylindole-3-Acetic Acid Derivatives via Cyanide-Catalyzed Imino-Stetter Reaction
作者:Hong-Ahn Seo、Cheol-Hong Cheon
DOI:10.1021/acs.joc.6b01621
日期:2016.9.2
for the synthesis of 2-vinylindole-3-acetic acidderivatives from aldimines, which are derived from 2-aminocinnamic acidderivatives and α,β-unsaturated aldehydes, via a cyanide-catalyzed imino-Stetter reaction is described. Various types of 2-aminocinnamic acidderivatives and α,β-unsaturated aldehydes could be used in this protocol, and the desired 2-vinyl substituted indole-3-acetic acid derivatives
Synthesis of 1,4‐Disubstituted and 1‐Substituted β‐Carbolines via 3‐Substituted 2‐Acylindoles
作者:Katharina Thees、Martin Untergehrer、Ilya A. P. Jourjine、Franz Bracher
DOI:10.1002/ejoc.202400124
日期:2024.5.21
Convenient methods are reported for the synthesis of 1,4-disubstituted and 1-substituted β-carbolines from 3-substituted 2-acylindoles, which are accessible through two one-pot multistep reactions via oxomethylated benzenesulfonamide intermediates. The acylindoles are subsequently subjected to aminomethylenation with formamide derivatives or chemoselective reduction, followed by ring closure with ammonium