Gram‐Scale Preparation of C‐Terminal‐Modified Enkephalin Analogues by Typical Liquid‐Phase Peptide Synthesis

2019 ◽  
Vol 98 (1) ◽  
Author(s):  
Yeon Sun Lee
2007 ◽  
Vol 11 (06) ◽  
pp. 434-441 ◽  
Author(s):  
Hitoshi Tamiaki ◽  
Kouji Kumon ◽  
Reiko Shibata

Hydroxymethyl-porphyrins were prepared by modifying tetraarylporphyrin possessing a p-(methoxycarbonyl)phenyl group at the meso-position and octaethylporphyrin. The synthetic alcohols reacted with carboxylic acids by the use of coupling reagents, to give the corresponding esters quantitatively. Due to the porphyrin dye moiety, the esterification was easily monitored on thin layer chromatography, and the resulting esters were highly soluble in most organic solvents and easily handled. The esters were readily cleaved by the action of an acid to give the original carboxylic acid and hydroxymethyl-porphyrin. Separation of the two species was performed by simple filtration: the carboxylic acid was soluble (filtrate) and the porphyrins were precipitates in methanol. These protective groups for carboxy groups were useful for peptide synthesis in the liquid phase.


1980 ◽  
Vol 45 (26) ◽  
pp. 5364-5370 ◽  
Author(s):  
V. N. Rajasekharan Pillai ◽  
Manfred Mutter ◽  
Ernst Bayer ◽  
Ian Gatfield

2017 ◽  
Vol 6 (11) ◽  
pp. 1505-1505
Author(s):  
Hiroki Wakamatsu ◽  
Yohei Okada ◽  
Masae Sugai ◽  
Syed R. Hussaini ◽  
Kazuhiro Chiba

2017 ◽  
Vol 6 (11) ◽  
pp. 1584-1588 ◽  
Author(s):  
Hiroki Wakamatsu ◽  
Yohei Okada ◽  
Masae Sugai ◽  
Syed R. Hussaini ◽  
Kazuhiro Chiba

2017 ◽  
Vol 2017 (40) ◽  
pp. 5942-5942
Author(s):  
Yohei Okada ◽  
Hitomi Asama ◽  
Hiroki Wakamatsu ◽  
Kazuhiro Chiba ◽  
Hidehiro Kamiya

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