{"id":352,"date":"2020-12-09T20:02:39","date_gmt":"2020-12-09T20:02:39","guid":{"rendered":"https:\/\/info.ias.tuwien.ac.at\/bsc\/?page_id=352"},"modified":"2023-05-16T21:07:17","modified_gmt":"2023-05-16T21:07:17","slug":"publications","status":"publish","type":"page","link":"https:\/\/info.ias.tuwien.ac.at\/bsc\/publications\/","title":{"rendered":"Publications"},"content":{"rendered":"\t\t
Lukas Schober, Hana Dobia\u0161ov\u00e1, Valentina Jurka\u0161, Fabio Parmeggiani, Florian Rudroff, Margit Winkler*<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Sebastian Hecko, Astrid Schiefer, Christoffel P. S. Badenhorst, Michael J. Fink, Marko D. Mihovilovic, Uwe T. Bornscheuer, and Florian Rudroff*<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Chem. Rev. 2023<\/strong>, XXXX, XXX, XXX-XXX<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t Many successful stories in enzyme engineering are based on the creation of randomized diversity in large mutant libraries, containing millions to billions of enzyme variants. Methods that enabled their evaluation with high throughput are dominated by spectroscopic techniques due to their high speed and sensitivity. A large proportion of studies relies on fluorogenic substrates that mimic the chemical properties of the target or coupled enzymatic assays with an optical read-out that assesses the desired catalytic efficiency indirectly. The most reliable hits, however, are achieved by screening for conversions of the starting material to the desired product. For this purpose, functional group assays offer a general approach to achieve a fast, optical read-out. They use the chemoselectivity, differences in electronic and steric properties of various functional groups, to reduce the number of false-positive results and the analytical noise stemming from enzymatic background activities. This review summarizes the developments and use of functional group probes for chemoselective derivatizations, with a clear focus on screening for enzymatic activity in protein engineering.<\/p> <\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t Fabian Scharinger, \u00c1d\u00e1m M\u00e1rk P\u00e1lv\u00f6lgyi, Melanie Weisz, Matthias Weil, Christian Stanetty, Michael Schn\u00fcrch, Katharina Bica-Schr\u00f6der*<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t Angew. Chem. Int. Ed. (2022<\/strong>) 61, e202202189<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t Herein, we present a novel approach for various asymmetric transformations of cyclic enones. The combination of readily accessible chiral diamines and sterically demanding flexible phosphoric acids resulted in a simple and highly tunable catalyst framework. The careful optimization of the catalyst components led to the identification of a particularly powerful and multi-purpose organocatalyst, which was successfully applied for asymmetric epoxidations, aziridinations, aza-Michael-initiated cyclizations, as well as for a novel Robinson-like Michael-initiated ring closure\/aldol cyclization. High catalytic activities and excellent stereocontrol was observed for all four reaction types, indicating the excellent versatility of our catalytic system. Furthermore, a simple change in the diamine’s configuration provided easy access to both product antipodes in all cases.<\/p> <\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t\t Fabian Scharinger, \u00c1d\u00e1m M\u00e1rk P\u00e1lv\u00f6lgyi, Melanie Weisz, Matthias Weil, Christian Stanetty, Michael Schn\u00fcrch, Katharina Bica-Schr\u00f6der*<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t Angew. Chem. Int. Ed. (2022<\/strong>) 61, e202202189<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\tSterically Demanding Flexible Phosphoric Acids for Constructing Efficient and Multi-Purpose Asymmetric Organocatalysts<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
Sterically Demanding Flexible Phosphoric Acids for Constructing Efficient and Multi-Purpose Asymmetric Organocatalysts<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t