Ozonolysis of (cyclohexa-1,4-dienyl)-L-alanine. An approach to the synthesis of new unnatural amino acids. X-Ray molecular structure of 2-hydroxy-7-methyl-3-phenylpyrazolo[1,5-a]pyrimidine
摘要:
The aromatic ring in L-phenylalanine was transformed into isoxazolyl, N-phenylpyrazolyl, and the bicyclic pyrazolo[1,5-a]pyrimidinyl groups, by a combination of Birch reduction and ozonolysis, followed by condensation with the relevant binucleophiles. The ozonolysis was carried out on the N-acylated esters of cyclohexa-1,4-dienylalanine. The resulting N-acylated esters of heterocyclic alanine derivatives were obtained without isolation of the ozonolysis products. 4-Phenylpyrazolidine-3,5-dione was used as a 'hydrazine donor' in the construction of a pyrazolyl group, as direct condensation with hydrazine was successful.
Making organoruthenium complexes of 8-hydroxyquinolines more hydrophilic: impact of a novel <scp>l</scp>-phenylalanine-derived arene ligand on the biological activity
作者:Sanam Movassaghi、Muhammad Hanif、Hannah U. Holtkamp、Tilo Söhnel、Stephen M. F. Jamieson、Christian G. Hartinger
DOI:10.1039/c7dt04451h
日期:——
Ru(arene) compounds have many desirable features making them promising candidates for further development in anticancer drug research. While a lot of emphasis has been placed on the modification of the ancillary ligands, there are not many examples of arene ligands bearing functional groups. Herein, we report the preparation of [Ru(arene)(8-oxyquinolinato)Cl] complexes with the arene being a protected
Ozonolysis of (cyclohexa-1,4-dienyl)-L-alanine. An approach to the synthesis of new unnatural amino acids. X-Ray molecular structure of 2-hydroxy-7-methyl-3-phenylpyrazolo[1,5-a]pyrimidine
作者:Gury Zvilichovsky、Vadim Gurvich
DOI:10.1039/p19950002509
日期:——
The aromatic ring in L-phenylalanine was transformed into isoxazolyl, N-phenylpyrazolyl, and the bicyclic pyrazolo[1,5-a]pyrimidinyl groups, by a combination of Birch reduction and ozonolysis, followed by condensation with the relevant binucleophiles. The ozonolysis was carried out on the N-acylated esters of cyclohexa-1,4-dienylalanine. The resulting N-acylated esters of heterocyclic alanine derivatives were obtained without isolation of the ozonolysis products. 4-Phenylpyrazolidine-3,5-dione was used as a 'hydrazine donor' in the construction of a pyrazolyl group, as direct condensation with hydrazine was successful.