Zobrazeno 1 - 10
of 20
pro vyhledávání: '"E. P. Krysin"'
Publikováno v:
Russian Journal of Applied Chemistry. 85:1790-1792
The possibility of obtaining high-purity solutions of tetramethylammonium hydroxide and tetra-nbutylammonium hydroxide was examined by passing of appropriate tetraalkylammonium halide solution through a column of an anion exchanger in the base form.
Publikováno v:
Chemistry of Natural Compounds. 22:449-456
Two schemes for the synthesis of a peptide with sequence 17–23 of human calcitonin with the minimum protection of the lateral functions of the amino acids are proposed.
Publikováno v:
Chemistry of Natural Compounds. 16:282-286
A new scheme for the synthesis of a peptide representing a modified analog of fragments 13–19 of the sequence of the adrenocorticotropic hormone has been described, which uses a number of stages the trimethylsilyl grouping for the protection of the
Publikováno v:
Chemistry of Natural Compounds. 21:356-361
A decapeptide with sequence 1–10 of human calcitonin has been synthesized by a 5+5 scheme with the minimum protection of the side-chain functional groups of the amino acid.
Publikováno v:
Chemistry of Natural Compounds. 21:520-523
A new variant of the preparative synthesis of hexapeptide 11–16 of the natural sequence of human calcitonin is described. In several of the stages 2-ethoxy-1-ethoxycarbonyl-1,2-dihydroquinoline was used successfully as the condensing agent. The fin
Publikováno v:
Chemistry of Natural Compounds. 15:324-328
The paper gives the results of the synthesis of the tripeptide arginyl-arginylproline performed with the use of various condensing agents. Nα-tert-Butoxycarbonyl-Nω-nitroarginine was used as the starting compound. Some physicochemical characteristi
Publikováno v:
Chemistry of Natural Compounds. 18:90-94
The results are given of the synthesis of the heptapeptide 13–19 of the natural sequence of ACTH using, in a number of stages, the pentafluorophyl esters of amino acids and peptides in combination with the temporary silyl protection of the carboxy
Publikováno v:
Pharmaceutical Chemistry Journal. 14:410-413
Publikováno v:
Chemistry of Natural Compounds. 22:706-709
A scheme is given for the synthesis of a heptapeptide representing a modified ACTH 4–10 fragment on the basis of which it is possible to create a preparation that is an effective adaptogen of peptide nature. A proposed variant of the synthesis perm
Autor:
A. K. Rabinovich, E. P. Krysin
Publikováno v:
Chemistry of Natural Compounds. 24:211-215
A new effective method of synthesizing fragment 1–4 of the ACTH sequence ensuring a high overall yield of the desired product is proposed. This result is achieved thanks to the wide use of the silylation reaction in the synthesis, which has permitt