Traceless Rhodium-Catalyzed Hydroacylation Using Alkyl Aldehydes: The Enantioselective Synthesis of β-Aryl Ketones
作者:Anaïs Bouisseau、Ming Gao、Michael C. Willis
DOI:10.1002/chem.201604035
日期:2016.10.24
A one‐pot three‐step sequence involving Rh‐catalyzed alkene hydroacylation, sulfide elimination and Rh‐catalyzed aryl boronic acid conjugate addition gave products of traceless chelation‐controlled hydroacylation employing alkyl aldehydes. The stereodefined β‐aryl ketones were obtained in good yields with excellent control of enantioselectivity. Good variation of all three reaction components is possible
Design, synthesis, and complementary recognition of β-hairpin peptides stabilized by artificial DNA base-pairing amino acids
作者:Katsuhiro Isozaki、Kazushi Miki
DOI:10.1039/b924239b
日期:——
A novel DNA base-pairing beta-hairpin peptide involving intramolecular hydrogen bonds for induction of beta-hairpin secondary structure and intermolecular complementary hydrogen bonds between thymine and diaminopyridine for molecular recognition has been synthesized.
(37). Here we present the synthesis of new inhibitors of Aurora Bkinase, which is an important target for cancer therapy through mitosis regulation. The biologically oriented synthesis yielded several nanomolar inhibitors. The optimized compound CJ2-150 (37) showed a non-ATP competitive allosteric mode of action in a mixed-type inhibition for Aurora Bkinase. Molecular docking identified a probable binding
A new gold-catalysed azidation reaction of allenes is presented as a new highly modular approach for the synthesis of substituted allyl derivatives containing nitrogen from simple precursors.
Novel one-step method for the conversion of isothiocyanates to 2-alkyl(aryl)aminothiazoles
作者:Pradip K. Sasmal、A. Chandrasekhar、S. Sridhar、Javed Iqbal
DOI:10.1016/j.tet.2008.09.074
日期:2008.12
2-Aminothiazole derivatives are widely used structural motifs in medicinal chemistry due to their broad application in drug development. Herein we demonstrate a novel one-step method for the synthesis of 2-aminothiazole derivatives from the corresponding isothiocyanates via thiourea formation followed by cycloisomerisation in an intramolecular thia-Michael fashion. This method is very mild, simple