139259-07-7Relevant academic research and scientific papers
Scandium(III)-zeolites as new heterogeneous catalysts for imino-diels-alder reactions
Olmos, Andrea,Louis, Benoit,Pale, Patrick
supporting information; experimental part, p. 4894 - 4901 (2012/06/04)
This study demonstrates the first zeolite-catalyzed synthesis of piperidine derivatives, including peptidomimetics and indoloquinolizidine alkaloids. The approach developed utilizes a highly effective one-pot reaction cascade, through imine formation and
Enantioselective construction of highly functionalized indoloquinolizines-congeners to polycyclic indole alkaloids
Lock, Ralf,Waldmann, Herbert
, p. 143 - 151 (2007/10/03)
Indolo[2,3-α]quinolizines have been prepared in enantiomerically pure form by a very short and efficient synthetic sequence consisting of a) formation of imines of tryptophan esters, b) their enantioselective reaction with substituted silyloxydienes media
Asymmetric synthesis of highly functionalized tetracyclic indole bases embodying the basic skeleton of yohimbine-and reserpine type alkaloids
Lock, Ralf,Waldmann, Herbert
, p. 2753 - 2756 (2007/10/03)
Schiff bases derived from tryptophan methyl ester react with differently substituted electron-rich siloxy dienes in the presence of achiral or chiral boric acid esters to give enaminones 5 and 6 with high diastereomer ratios (up to >98:2). These intermedi
Asymmetric Synthesis of Indoloquinolizidin-2-ones Congeners to Yohimbine-Type Alkaloids
Waldmann, Herbert,Braun, Matthias,Weymann, Markus,Gewehr, Markus
, p. 397 - 416 (2007/10/02)
Schiff bases derived from tryptophan methyl ester and tryptamine react with Danishefkys diene in the presence of ZnCl2 to give enaminones which are subsequently transformed into indoloquinolizidin-2-ones by acid-catalyzed cyclization.These tetracyc
