Disulfide-Bridged Peptides That Mediate Enantioselective Cycloadditions through Thiyl Radical Catalysis
作者:Jonathan M. Ryss、Amanda K. Turek、Scott J. Miller
DOI:10.1021/acs.orglett.8b00364
日期:2018.3.16
An enantioselective vinylcyclopropane ring-opening/cycloaddition cascade is described. The active thiylradical catalysts are generated in situ via UV light-promoted homolysis of cystine-based dimers. Amide-functionalization of the peptide at the 4-proline position is essential for effective asymmetric induction. Stereochemical communication is dependent on steric interactions with this substituent
Stereodivergent Synthesis of Chiral Fullerenes by [3 + 2] Cycloadditions to C<sub>60</sub>
作者:Enrique E. Maroto、Salvatore Filippone、Margarita Suárez、Roberto Martínez-Álvarez、Abel de Cózar、Fernando P. Cossío、Nazario Martín
DOI:10.1021/ja410408c
日期:2014.1.15
A wide range of new dipoles and catalysts have been used in 1,3-dipolar cycloadditions of N-metalated azomethine ylides onto C60 yielding a full stereodivergent synthesis of pyrrolidino[60]fullerenes with complete diastereoselectivities and very high enantioselectivities. The use of less-explored chiral α-iminoamides as starting 1,3-dipoles leads to an interesting double asymmetric induction resulting
An Inhibitor of Fatty Acid Synthase Thioesterase Domain with Improved Cytotoxicity against Breast Cancer Cells and Stability in Plasma
作者:Leslie E. Lupien、Evan M. Dunkley、Margaret J. Maloy、Ian B. Lehner、Maxwell G. Foisey、Maddison E. Ouellette、Lionel D. Lewis、Darcy Bates Pooler、William B. Kinlaw、Paul W. Baures
DOI:10.1124/jpet.119.258947
日期:2019.10
thioesterase domain FASN inhibitor that has drug-like properties, is more cytotoxic to breastcancer cells than the widely used tetrahydro-4-methylene-2S-octyl-5-oxo-3R-furancarboxylic acid, and has negligible effects on the growth and proliferation of noncancerous mammary epithelial cells. Our studies have confirmed the value of using potent and selective FASN inhibitors in the treatment of BC cells and have