[EN] CARBON MONOXIDE RELEASING NORBORNENONE COMPOUNDS<br/>[FR] COMPOSÉS DE NORBORNÉNONE LIBÉRANT DU MONOXYDE DE CARBONE
申请人:SAMMUT IVAN ANDREW
公开号:WO2017095237A1
公开(公告)日:2017-06-08
The present invention provides organic compounds which are capable of releasing carbon monoxide under physiological conditions or pH trigger, and to the use of such compounds for conditioning a cell, tissue or organ, for example, to protect against ischaemic injury during a transplant event.
A Straightforward Approach towards Cyclic Photoactivatable Tubulysin Derivatives
作者:Judith Hoffmann、Uli Kazmaier
DOI:10.1002/anie.201405650
日期:2014.10.13
synthesis of cyclicphotoactivatable natural products. Cyclization occurs between the allyl moiety in the protecting group and a second double bond in the target molecule by means of ring‐closing metathesis. Cyclization should increase the metabolic stability towards proteases. On the other hand, the conformational change should cause diminished biological activity. As illustrated for tubulysin derivatives
Photocaging of Carboxylic Acids: A Modular Approach
作者:Wiktor Szymański、Willem A. Velema、Ben L. Feringa
DOI:10.1002/anie.201402665
日期:2014.8.11
Photocaged compounds are important tools for studying and regulating multiple processes, including biological functions. Reported herein is the use of the Passerini multicomponent reaction for modular preparation of photocagedcarboxylicacids. The reaction is compatible with several functionalities and proceeds smoothly both in water and dichloromethane. The choice of aldehyde determines the wavelength
Stabilization of Cyclic β-Hairpins by Ugi-Reaction-Derived <i>N</i>-Alkylated Peptides: The Quest for Functionalized β-Turns
作者:Manuel G. Ricardo、Aldrin V. Vasco、Daniel G. Rivera、Ludger A. Wessjohann
DOI:10.1021/acs.orglett.9b02592
日期:2019.9.20
aligning antiparallel β-sheets in a macrocyclic scaffold, thus serving as β-hairpin templates. Gramicidin S was used as the model β-hairpin to compare the Ugi-derived β-turns with the type-II′ β-turn. The results show that the multicomponent incorporation of such N-alkylated residues allows for the simultaneous stabilization and exo-cyclic functionalization of cyclic β-hairpins.
Synthesis of Isonitriles from N-Substituted Formamides Using Triphenylphosphine and Iodine
作者:Qun-Li Luo、Xia Wang、Qing-Gang Wang
DOI:10.1055/s-0034-1379111
日期:——
alkyl and aryl isocyanides. Treatment of N-substituted formamides with the reagent combination of triphenylphosphine and molecular iodine, in the presence of a tertiary amine, quickly produces the corresponding isocyanides in high yields under ambient conditions. The process employs readily available and low-cost reagents, a convenient synthetic procedure, and mild reaction conditions for the synthesis