314728-04-6Relevant articles and documents
Synthesis of desmosine-containing cyclic peptide for the possible elucidation of elastin crosslinking structure
Ogawa, Keita,Hayashi, Takahiro,Lin, Yong Y.,Usuki, Toyonobu
, p. 3838 - 3847 (2017/06/13)
Elastin is a vital extracellular matrix protein, which is known for providing elasticity in numerous tissues. It is formed by the self-assembly and subsequent crosslinking of elastin precursor, tropoelastin. Two tetrafunctional, pyridinium-based amino acids desmosine and isodesmosine are exclusively found in elastin and play an important role as crosslinkers. Structural elucidation of elastin has eluded scientists to date, owing to the highly cross-linked structure and insoluble nature. Therefore, in this study, we aimed to synthesize a desmosine-containing cyclic peptide as a partial elastin mimic, in order to eventually facilitate the elucidation of the crosslinking pattern of elastin by mass spectrometric analysis.
Light-mediated deoxygenation of alcohols with a dimeric gold catalyst
McCallum, Terry,Slavko, Ekaterina,Morin, Mathieu,Barriault, Louis
, p. 81 - 85 (2015/02/18)
A new protocol for the reductive deoxygenation of primary alcohols was explored. This photo-mediated method combines a novel approach to bromination of alcohols merged with the powerful reducing capability of [Au2(dppm)2]Cl2 [dppm = 1,1-bis(diphenylphosphino)methane] as a photoredox catalyst. The highly efficient methods discussed are marked by the use of UVA light-emitting diodes, which have significantly reduced reaction times and lowered setup cost.
An access to aza-Freidinger lactams and E-locked analogs
Ottersbach, Philipp A.,Schmitz, Janina,Schnakenburg, Gregor,Gütschow, Michael
, p. 448 - 451 (2013/04/11)
Freidinger lactams, possessing a peptide bond configuration locked to Z, are important key elements of conformationally restricted peptidomimetics. In the present work, the CαHi+1 unit has been replaced by N, leading to novel aza-Fre