نتایج جستجو برای: direct macrocyclization

تعداد نتایج: 425220  

Journal: :International journal of mass spectrometry 2012
Matthew C Bernier Bela Paizs Vicki H Wysocki

Collision-induced dissociation of protonated AGabaAIG (where Gaba is gamma-amino butyric acid, NH(2)-(CH(2))(3)-COOH) leads to an unusually stable a(3) ion. Tandem mass spectrometry and theory are used here to probe the enhanced stability of this fragment, whose counterpart is not usually observed in CID of protonated peptides containing only alpha amino acids. Experiments are carried out on th...

Journal: :Journal of the American Chemical Society 2010
Beatriz Ballesteros Thomas B Faust Chin-Fa Lee David A Leigh Christopher A Muryn Robin G Pritchard David Schultz Simon J Teat Grigore A Timco Richard E P Winpenny

The synthesis and characterization of a series of hybrid organic-inorganic [2]rotaxanes is described. The ring components are heterometallic octa- ([Cr(7)MF(8)(O(2)C(t)Bu)(16)]; M = Co, Ni, Fe, Mn, Cu, Zn, and Cd) nuclear cages in which the metal centers are bridged by fluoride and pivalate ((t)BuCO(2)(-)) anions; the thread components feature dialkylammonium units that template the formation o...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1379

‏‎for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...

Journal: :Angewandte Chemie 2021

We introduce a new and highly efficient synthetic protocol towards multifunctional fluorescent cyclopeptides by solid-phase peptide macrocyclization via dipyrrin construction, with full scope of proteinogenic amino acids different ring sizes. Various bicyclic peptides can be created dipyrrin-based crosslinking double dipyrrin-ring formation. The embedded either transformed to BODIPY then utiliz...

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