Results 151 to 160 of about 3,824 (213)

Transannular Rearrangement of Activated Lactams: Stereoselective Synthesis of Substituted Pyrrolidine-2,4-Diones From Diketopiperazines

open access: yesAngewandte Chemie - International Edition, 2007
International audienceWe describe herein the unprecedented reactivity of N-carboxy derivatives of 2,5-diketopiperazines (DKPs). The reaction of these derivatives under basic conditions led to novel substituted pyrrolidine-2,4-diones (1)
Isabelle Parrot   +2 more
exaly   +2 more sources

Conformational Studies on Methionyl-Containing Diketopiperazines

open access: yesInternational Journal of Biological Macromolecules, 1982
Circular dichroism measurements on methionyl-containing diketopiperazines have shown that the thioether side chain favours the appearance of fold conformations in the ring.
V Guantieri, A M Tamburro
exaly   +2 more sources
Some of the next articles are maybe not open access.

Related searches:

Oxidation of Tyrosine Diketopiperazine to DOPA Diketopiperazine with Tyrosine Hydroxylase

Journal of Natural Products, 2004
The diketopiperazine of DOPA was synthesized in high yield from the diketopiperazine of tyrosine using PC12 cell lysate, which expresses high levels of tyrosine hydroxylase. This represents the first use of this enzyme to prepare DOPA-containing peptides.
Maysoon B, Saleh, Russell G, Kerr
openaire   +2 more sources

Diketopiperazines in wines

Journal of Wine Research, 2018
ABSTRACTThis study describes the identification of cyclic dipeptides known as diketopiperazines in red, white and sparkling wines from Greek market. Diketopiperazines have been isolated from bottled wines after liquid–liquid extraction and identified using gas chromatography coupled with mass spectrometry.
Eygenia Stamatelopoulou   +6 more
openaire   +1 more source

2,5-Diketopiperazines as Neuroprotective Agents

Mini-Reviews in Medicinal Chemistry, 2012
2,5-diketopiperazines are the simplest cyclic peptides found in nature, commonly biosynthesized from amino acids by different organisms, and represent a promising class of biologically active natural products. Their peculiar heterocyclic structure confers high stability against the proteolysis and constitutes a structural requirement for the active ...
CORNACCHIA, CATIA   +5 more
openaire   +3 more sources

Diketopiperazines from Marine Organisms

Chemistry & Biodiversity, 2010
AbstractDiketopiperazines (DKPs), which are cyclic dipeptides, have been detected in a variety of natural resources. Recently, the interest in these compounds increased significantly because of their remarkable bioactivity. This review deals with the chemical structures, biosynthetic pathways, and biological activities of DKPs from marine ...
Riming, Huang   +4 more
openaire   +2 more sources

Improvements in Aldol Reactions with Diketopiperazines.

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Juan Francisco González   +2 more
openaire   +1 more source

Diketopiperazines in Peptide and Combinatorial Chemistry

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +2 more sources

Microbial hydrolysis of diketopiperazines: Different types of diketopiperazine-assimilating bacteria

Journal of Fermentation and Bioengineering, 1997
Abstract Arthrobacter sp. 1-3-1 and a coryneform rod bacterium, strain T-1-3-Y, which assimilate cyclo(Gly-Gly) and cyclo(Gly- l -Tyr) at high rates, respectively, were isolated from soil. Both bacteria exhibit diketopiperazine-hydrolyzing activity intracellularly in contrast to the extracellular cyclo(Gly-Gly) hydrolase reported previously ...
Hiroshi Kanzaki   +3 more
openaire   +1 more source

Home - About - Disclaimer - Privacy