Sequentially Photocleavable Protecting Groups in Solid-Phase Synthesis

2003 ◽  
Vol 5 (8) ◽  
pp. 1179-1181 ◽  
Author(s):  
Martin Kessler ◽  
Ralf Glatthar ◽  
Bernd Giese ◽  
Christian G. Bochet
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Protecting Groups ◽  
Phase Synthesis

Vasopressin and oxytocin analogs with interchanged sequence of amino acids in positions 7 and 8. synthesis and biological effects

1981 ◽  
Vol 46 (9) ◽  
pp. 2136-2139 ◽  
Author(s):  
Ivo Bláha ◽  
Viktor Krchňák ◽  
Milan Zaoral
Keyword(s):  
Amino Acids ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Biological Effects ◽  
Free Flow ◽  
Protecting Groups ◽  
Pressor Effect ◽  
Phase Synthesis ◽  
Antidiuretic Effect

p-Toluenesulfonyl-S-benzylcysteinyl-tyrosyl-phenylalanyl-glutaminyl-asparaginyl-S-benzylcysteinyl-NG-p-toluenesulfanylarginyl-prolyl-glycineamide (I) and S-benzylcysteinyl-tyrosyl-isoleucyl-glutaminyl-asparaginyl-S-benzylcysteinyl-leucyl-prolyl-glycine amide (III) were prepared by solid phase synthesis. After removal of the protecting groups, closure of the disulfide ring, and purification by continuous free-flow electrophoresis [arginine7, proline8]vasopressin (II) and [leucine7, proline8]oxytocin (IV) were obtained. The antidiuretic effect of II is markedly higher than its pressor effect; IV possesses c. 6% of the uterotonic and c. 10% of the galactogogous effect of oxytocin.

scholarly journals Postsynthetic On-Column 2′ Functionalization of RNA by Convenient Versatile Method

2020 ◽  
Vol 21 (14) ◽  
pp. 5127
Author(s):  
Olga A. Krasheninina ◽  
Veniamin S. Fishman ◽  
Alexander A. Lomzov ◽  
Alexey V. Ustinov ◽  
Alya G. Venyaminova
Keyword(s):  
Chemical Synthesis ◽  
Physicochemical Properties ◽  
Functional Groups ◽  
Convenient Method ◽  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Protecting Groups ◽  
Hydroxyl Group ◽  
Phase Synthesis ◽  
Wide Range

We report a universal straightforward strategy for the chemical synthesis of modified oligoribonucleotides containing functional groups of different structures at the 2′ position of ribose. The on-column synthetic concept is based on the incorporation of two types of commercial nucleotide phosphoramidites containing orthogonal 2′-O-protecting groups, namely 2′-O-thiomorpholine-carbothioate (TC, as “permanent”) and 2′-O-tert-butyl(dimethyl)silyl (tBDMS, as “temporary”), to RNA during solid-phase synthesis. Subsequently, the support-bound RNA undergoes selective deprotection and follows postsynthetic 2′ functionalization of the naked hydroxyl group. This convenient method to tailor RNA, utilizing the advantages of solid phase approaches, gives an opportunity to introduce site-specifically a wide range of linkers and functional groups. By this strategy, a series of RNAs containing diverse 2′ functionalities were synthesized and studied with respect to their physicochemical properties.

Solid phase synthesis using trityl type side chain protecting groups

Peptides 1992 ◽  
1993 ◽  
pp. 283-284 ◽  
Author(s):  
K. Barlos ◽  
D. Gatos ◽  
O. Chatzi ◽  
S. Koutsogianni ◽  
W. Schäfer
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Protecting Groups ◽  
Side Chain ◽  
Phase Synthesis

Photocleavable Protecting Groups as Nucleobase Protections Allowed the Solid-Phase Synthesis of Base-Sensitive SATE-Prooligonucleotides

1999 ◽  
Vol 64 (17) ◽  
pp. 6319-6328 ◽  
Author(s):  
Karine Alvarez ◽  
Jean-Jacques Vasseur ◽  
Thierry Beltran ◽  
Jean-Louis Imbach
Keyword(s):  
Solid Phase Synthesis ◽  
Solid Phase ◽  
Protecting Groups ◽  
Phase Synthesis
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