Results 221 to 230 of about 18,412 (234)
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Synthesis of mono Nα-trifluoroethylated cyclic dipeptides

Tetrahedron Letters, 2006
Abstract Trifluoroethylated N-termini in linear dipeptides l -TyrXOR [X = Gly, d -Ala, l -Leu, l -Phe, and l -Glu; R = H, Me, Et] exhibit sufficient nucleophilicity to give piperazine-2,5-dione ring formation through intramolecular cyclization reaction in acidic aqueous solutions. The reactions occur in high yield and with absolute configuration
Darryl D. DesMarteau, Changqing Lu
openaire   +1 more source

Synthesis and evaluation of eight-membered cyclic pseudo-dipeptides

Peptides, 2005
In the course of the development of calpain inhibitors, we report the synthesis of eight-membered cyclic pseudo dipeptides closely related to the known inhibitor SJA6017. The ring closure was effected by metathesis of the diallyl-substituted dipeptides 6 and 7. The formation of the dipeptides under kinetic control leads to the preferential formation of
Abell, A.   +7 more
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Breaking Cyclic Dipeptide Prenyltransferase Regioselectivity by Unnatural Alkyl Donors

Organic Letters, 2013
The behavior of five cyclic dipeptide prenyltransferases, responsible for C2-regular, C2-reverse, or C3-reverse prenylation, was investigated in the presence of the unnatural alkyl donors monomethylallyl and 2-pentenyl diphosphate. Both substrates were well accepted by the tested enzymes.
Mike, Liebhold   +2 more
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Dietary cyclic dipeptides, apoptosis and psychiatric disorders: A hypothesis

Medical Hypotheses, 2014
Cyclic dipeptides from food and intestinal yeast cyclic dipeptides may play a role in causing psychiatric disorders such as schizophrenia. From cancer research, cyclic dipeptides such as cyclo (proline-phenylalanine) have been found to activate the pathways of apoptosis and to cause programmed cell death.
openaire   +2 more sources

Cyclic Dipeptides from Streptomyces michiganensis

Chemistry of Natural Compounds, 2015
Jinghua Xue, Min Wu
openaire   +1 more source

CONFORMATION OF CYCLIC DIPEPTIDES

1981
G. KARTHA, K.I. VARUGHESE
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Synthesis of cyclic ketomethylene dipeptides

1991
M. T. GARCIA LOPEZ   +4 more
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Synthesis of cyclic ureas and cyclic thioureas from acyl dipeptides

2005
Adel Nefzi   +5 more
openaire   +1 more source

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