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Université de Fribourg

Conserved functions of ether lipids and sphingolipids in the early secretory pathway

Jiménez-Rojo, Noemi ; Leonetti, Manuel D. ; Zoni, Valeria ; Colom, Adai ; Feng, Suihan ; Iyengar, Namrata R. ; Matile, Stefan ; Roux, Aurélien ; Vanni, Stefano ; Weissman, Jonathan S. ; Riezman, Howard

In: Current Biology, 2020, vol. 30, no. 19, p. 3775-3787.e7

Sphingolipids play important roles in physiology and cell biology, but a systematic examination of their functions is lacking. We performed a genome-wide CRISPRi screen in sphingolipid-depleted human cells and identified hypersensitive mutants in genes of membrane trafficking and lipid biosynthesis, including ether lipid synthesis. Systematic lipidomic analysis showed a coordinate regulation...

Université de Fribourg

Telechelics based on catalytic alternating ring-opening metathesis polymerization

Pal, Subhajit ; Alizadeh, Mahshid ; Kilbinger, Andreas F. M.

In: ACS Macro Letters, 2019, vol. 8, no. 10, p. 1396–1401

We describe a protocol to synthesize alternating telechelic ROMP copolymers of 7- oxa-norbornene derivatives and cycloalkenes under catalytic conditions. These copolymers were synthesized using Grubbs’ second-generation catalyst. The sterically less hindered backbone double bonds of the resulting alternating copolymers facilitate the chain transfer (secondary metathesis) reactions. In the ...

Université de Fribourg

Functional end groups in living ring-opening metathesis polymerization

Kilbinger, Andreas

In: Synlett, 2019, vol. 30, no. 18, p. 2051–2057

Over the last two decades many synthetic methods have been reported to selectively introduce a number of different functional groups at the chain end of a living ring- opening metathesis polymer. In this personal account, I would like to focus on a few such methods developed in my research group over the last several years and how these led to the discovery of catalytic living ring-opening...

Consortium of Swiss Academic Libraries

Open Quantum Systems Coupled to Time-Dependent Classical Environments

Osmanov, Maksym ; Öttinger, Hans

In: International Journal of Thermophysics, 2013, vol. 34, no. 7, p. 1255-1264

Université de Fribourg

Heterotelechelic polymers by ring‐opening metathesis and regioselective chain transfer

Yasir, Peng Liu, Mohammad ; Ruggi, Albert ; Kilbinger, Andreas F. M.

In: Angewandte Chemie International Edition, 2018, vol. 57, no. 4, p. 914–917

Heterotelechelic polymers were synthesized by a kinetic telechelic ring-opening metathesis polymerization method relying on the regioselective cross-metathesis of the propagating Grubbs’ first-generation catalyst with cinnamyl alcohol derivatives. This procedure allowed the synthesis of hetero-bis-end-functional polymers in a one- pot setup. The molecular weight of the polymers could be...