4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Toluene-4-sulfonate (DMT/NMM/TsO<sup>−</sup>
) Universal Coupling Reagent for Synthesis in Solution
作者:Justyna Fraczyk、Zbigniew J. Kaminski、Joanna Katarzynska、Beata Kolesinska
DOI:10.1002/hlca.201700187
日期:2018.1
environmentally‐friendly N‐triazinylammonium family of sulfonates, has been found to be a very effective coupling reagent for the synthesis of amides, esters and peptides in solution. This study confirms the usefulness of DMT/NMM/TsO− for peptidesynthesis in solution, starting from Z‐, Fmoc‐, and Boc‐protected substrates as well as unnatural building blocks. Peptidesynthesis with DMT/NMM/TsO− produced
This invention relates to novel fused bicyclic compounds of the general formula (I):
wherein
the symbols are defined herein, to pharmaceutical compositions containing the compounds, processes for preparing the compounds, and to methods of using the compounds, alone or in combination with other therapeutic agents. The compounds are antagonists of the platelet glycoprotein IIb/IIIa fibrinogen receptor complex, and are therefore useful for the inhibition of platelet aggregation, and for the treatment of thrombotic diseases and other diseases.
�ber die Geschwindigkeit der Aminolyse von verschiedenen neuen, aktivierten, N-gesch�tzten ?-Aminos�ure-phenylestern, insbesondere 2,4,5-Trichlorphenylestern
作者:J. Pless、R. A. Boissonnas
DOI:10.1002/hlca.19630460516
日期:——
A comparison of the ate of aminolysis of many substituted phenyl esters of N-protected α-amino-acids shows that the 2,4,5-trichlorophenyl esters are promising new active derivatives for the synthesis of peptides.
Synthese von Carbobenzoxy-dipeptid-p-nitrophenylestern. Über aktivierte Ester IX
作者:B. Iselin、R. Schwyzer
DOI:10.1002/hlca.19600430639
日期:——
A study of the preparation of carbobenzoxy-dipeptide p-nitrophenyl esters revealed that partial racemization may occur depending on the structure of the dipeptide derivative used. Whereas carbobenzoxy-S-benzyl-L-cysteinyl-L-tyrosine yielded an opticallypureester employing the sulfite method, the synthesis of the ester of carbobenzoxy-L-tyrosine by various methods proceeded with partial racemization
Synthese von Cystinpeptiden mit Sequenzen aus demC-terminalen Bereich der Humaninsulin-A-Kette
作者:Helmut Zahn、Edgar Th. J. Fölsche
DOI:10.1002/jlac.19687160124
日期:1968.10.22
Z-Leu-Tyr-Gln-Leu-Glu-Asn-Tyr-Cys(Bzl)-Asn (3) und Z-Ile-Cys(Bzl)-Ser-Leu-Tyr-Gln-Leu-Glu-Asn-Tyr-Cys(Bzl)-Asn (13), die den Sequenzen 17-21, 13-21 und 10-21 in der A-Kette des Humaninsulins entsprechen, wurden durch Fragmentkondensation aufgebaut (vgl. Schema S. 166), durch Behandeln mit Natrium in flüssigem Ammoniak deblockiert und anschließend durch Luftoxydation in die Cystinpeptide 14-16 übergeführt