24716-93-6Relevant articles and documents
Catalytic enantioselective desymmetrization of meso-N-acylaziridines with TMSCN
Mita, Tsuyoshi,Fujimori, Ikuo,Wada, Reiko,Wen, Jianfeng,Kanai, Motomu,Shibasaki, Masakatsu
, p. 11252 - 11253 (2005)
A catalytic enantioselective desymmetrization of meso-N-p-nitrobenzoylaziridines with TMSCN was developed using a chiral gadolinium catalyst generated from Gd(OiPr)3 and d-glucose-derived ligand 1. In this reaction, the addition of a
Isothiourea-mediated asymmetric O- to C-carboxyl transfer of oxazolyl carbonates: Structure-selectivity profiles and mechanistic studies
Joannesse, Caroline,Johnston, Craig P.,Morrill, Louis C.,Woods, Philip A.,Kieffer, Madeleine,Nigst, Tobias A.,Mayr, Herbert,Lebl, Tomas,Philp, Douglas,Bragg, Ryan A.,Smith, Andrew D.
, p. 2398 - 2408 (2012/03/27)
The structural motif within a series of tetrahydropyrimidine-based isothioureas necessary for generating high asymmetric induction in the asymmetric Steglich rearrangement of oxazolyl carbonates is fully explored, with crossover and dynamic 19F NMR experiments used to develop a mechanistic understanding of this transformation. Copyright
Synthesis and characterisation of helical β-peptide architectures that contain (S)-β3-HDOPA(crown ether) derivatives
Dutot, Laurence,Gaucher, Anne,Elkassimi, Khadidja,Drapeau, Jeremy,Wakselman, Michel,Mazaleyrat, Jean-Paul,Peggion, Cristina,Formaggio, Fernando,Toniolo, Claudio
supporting information; scheme or table, p. 3154 - 3163 (2009/04/11)
A new set of β-amino acids that carry various crown ether receptors on their side chains of the general formula (S)-β3-HDOPA(crown ether) (HDOPA: homo-3,4-dihydroxyphenylalanine; (crown ether): [15]crown-5 ([15-C-5]), [18]crown-6 ([18-C-6]), [21]crown-7 ([21-C-7]), 1,2-Benzo-[24]crown- 8 ([Benzo-24-C-8]) and (R)-Binol-[20]crown-6 ([(R)-Binol-20-C-6])) was prepared. Peptides that are based on these new crowned β-amino acids combined with (1S,2S)-ACHC (2-aminocyclohexanecarboxylic acid), which is known to be a potent 314-helix inducer, to the hexamer level, with two crowned residues at the i and i+3 posi_tions of the main-chain, were synthesized in solution by stepwise coupling using Boc-Na-protection (Boc: tert-butoxycarbonyl) and the EDC/HOAt Cactivation method. Their conformational analysis was performed by using FTIR absorption, NMR and CD spectroscopy techniques. Our results are in full agreement with a 314-helix conformation.