155251-70-0Relevant articles and documents
The chiral diamine mediated asymmetric Baylis-Hillman reaction
Hayashi, Yujiro,Tamura, Tomohiro,Shoji, Mitsuru
, p. 1106 - 1110 (2004)
A chiral diamine, easily prepared from proline, is an effective, asymmetric organic catalyst for the Baylis-Hillman reaction of aldehydes and methyl vinyl ketone, affording adducts with enantio-selectivities up to 75%.
An introduction of a pyridine group into the structure of prolyl oligopeptidase inhibitors
Jarho, Elina M.,Venaelaeinen, Jarkko I.,Juntunen, Juha,Yli-Kokko, A. Leena,Vepsaelaeinen, Jouko,Christiaans, Johannes A.M.,Forsberg, Markus M.,Jaervinen, Tomi,Maennistoe, Pekka T.,Wallen, Erik A.A.
, p. 5590 - 5593 (2006)
A series of ionizable prolyl oligopeptidase inhibitors were developed through the introduction of a pyridyl group to the P3 position of the prolyl oligopeptidase inhibitor structure. The study was performed on previously developed prolyl oligopeptidase in
Total Synthesis of Mycenarubin A, Sanguinolentaquinone and Mycenaflavin B and their Cytotoxic Activities
Backenk?hler, Jana,Reck, Bernhard,Plaumann, Markus,Spiteller, Peter
, p. 2806 - 2816 (2018/06/04)
Here we report the first total synthesis of the fungal alkaloids mycenarubin A, sanguinolentaquinone and mycenaflavin B. The pyrroloquinoline alkaloid mycenarubin A was obtained in 10 steps (21 % total yield, 92 % ee) from the known key precursor 6,7-bis(benzyloxy)indole by an asymmetric alkylation and a biomimetic ring closure as the key steps. The indolo-6,7-quinone sanguinolentaquinone was obtained in eight steps (28 % total yield). Mycenaflavin B was also obtained in eight steps starting from the same key precursor (total yield 15 %) by a biomimetic ring closure and an acid-catalysed decarboxylation reaction as the key steps. The cytotoxic activities of mycenarubin A and mycenaflavin B were evaluated against mouse fibroblasts (L929) and human malignant melanoma cells (RPMI-7951).
α-Aminoamides as ligands in Goldberg amidations
Mitra, Aurpon W.,Hansen, Marvin M.,Laurila, Michael E.,Kolis, Stanley P.,Martinelli, Joseph R.
supporting information, p. 6580 - 6583 (2013/11/19)
α-Aminoamides are shown to be useful as ligands in Goldberg amidations. A number of α-aminoamides are examined and the importance of substitution on the α-aminoamides is explored. Acetamide is focused on as the nucleophilic coupling partner due to its low cost, stability and convenience as a protecting group. The initial substrate scope for these catalysts is explored and includes electronically activated and deactivated aryl bromides, however o-substituted aryl bromides are problematic.