Eight Met- and Leu-enkephalin analogs substituted with L- or D-Arg at position 2 were synthesized using NG-mesitylene-2-sulfonylarginine. Among them, H-Tyr-D-Arg-Gly-Phe-Met-OH was found to possess an analgesic effect 2.4 times higher than that of morphine on a molar basis, when injected intracisternally. This compound was also found to produce analgesia when administered intravenously.
Leptoclinidamines A−C, Indole Alkaloids from the Australian Ascidian <i>Leptoclinides durus</i>
作者:Anthony R. Carroll、Vicky M. Avery
DOI:10.1021/np800831z
日期:2009.4.24
Three new indole alkaloids, leptoclinidamines A−C (1−3), were isolated from the Australian ascidian Leptoclinides durus. Their structures were determined by analysis of 2D NMR spectra. Leptoclinidamines A and B both contain an indoleglyoxylic acid attached to an l-arginine. The structure of leptoclinidamine A was confirmed by total synthesis. Leptoclinidamine C contains the naturally rare 1,3-dime
作者:Blaine J. Zern、Hunghao Chu、Adeboye O. Osunkoya、Jin Gao、Yadong Wang
DOI:10.1002/adfm.201000969
日期:2011.2.8
assembly between a polycation and a polyanion. The biomedical importance of synthetic polycations arises from their affinity to polyanions such as nucleic acid and heparan sulfate. However, the limited biocompatibility of synthetic polycations hampers the realization of their immense potential. By examining biocompatible cationic peptides, we hypothesize that a biocompatiblepolycation should be biodegradable
[EN] SOLUTION PHASE METHOD FOR PREPARING ETELCALCETIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ÉTELCALCÉTIDE EN PHASE SOLUBLE
申请人:AMGEN INC
公开号:WO2016154580A1
公开(公告)日:2016-09-29
The instant disclosure is directed to solution phase fragment coupling methods for preparing etelcalcetide and its pharmaceutically acceptable salts.
该即时披露涉及用于制备etelcalcetide及其药用可接受盐的溶液相片段偶联方法。
METHOD FOR PRODUCING TRI-CARBOBENZOXY-ARGININE
申请人:KANEKA CORPORATION
公开号:US20170174622A1
公开(公告)日:2017-06-22
A tri-carbobenzoxy-arginine represented by the following formula (2):
is produced by carbobenzoxylating the arginine or arginine derivative (1) represented by the following formula (1), or a salt thereof:
by adding carbobenzoxy chloride and a base in a water/organic solvent bilayer system to an arginine or arginine derivative (1) represented by the formula (1), or a salt thereof.