132482-05-4Relevant articles and documents
LIGAND EFFECTS IN ENANTIOFACE DIFFERENTIATING 1,4 ADDITION TO 1,3 DIPHENYL-2 PROPEN-1 ONE
Leyendecker, Francois,Jesser, Francis,Laucher, Dominique
, p. 3513 - 3516 (1983)
The extent of enantiomeric excess in the β-methylation of chalcone by chiral cuprates is shown to depend strongly on small structural modifications of the ligands, all of which are derived from the basic carbon framework of L-prolinol.Enantiomeric excesses up to 88percent have been realised.
Diastereoselective synthesis of (-)-1-methyl-(3S,4R)-3,4-bis((2S)-N- (tert-butyloxycarbonyl)pyrrolidin-2-yl)-2-pyrrolidinone by an asymmetric Michael reaction
Mahboobi, Siavosh,Popp, Alfred,Burgemeister, Thomas,Schollmeyer, Dieter
, p. 2369 - 2376 (1998)
Beginning with enantiomerically pure L-proline, (-)-1-methyl-(3S,4R)- 3,4-bis((2S)-N-(tert-butyloxycarbonyl)pyrrolidin-2-yl)-2-pyrrolidinone was prepared in diastereomerically pure form. Taking advantage of the chiral induction of the L-proline derivatives, the intermolecular Michael reaction, used to build the pyrrolidinone ring, was carried out stereoselectively.
Iminium ion-enamine cascade cyclizations: Facile access to structurally diverse azacyclic compounds and natural products
Hanessian, Stephen,Chattopadhyay, Amit Kumar
, p. 232 - 235 (2014/01/23)
A one-pot, mild, two-component iminium ion-enamine cascade reaction to construct structurally diverse azacyclic frameworks from l-proline and l-pipecolic acid, and its application to indolizidine and quinolizidine alkaloids and azasteroids, is reported.
Kinetic deconjugation: A gateway to the synthesis of Xxx-Gly (E)-alkene dipeptide isosteres
Proteau-Gagné, Arnaud,Nadon, Jean-Franois,Bernard, Sylvain,Guérin, Brigitte,Gendron, Louis,Dory, Yves L.
supporting information; experimental part, p. 6603 - 6605 (2012/02/03)
A new method for the preparation of Xxx-Gly (E)-alkene dipeptide isosteres (EADIs), using LDA deprotonation followed by 1 N HCl quench, was explored. The method, named kinetic deconjugation, enabled the synthesis of Tyr-Gly, Gly-Gly, Ser-Gly, Pro-Gly, and