Results 31 to 40 of about 3,874 (203)

“Head-to-Side-Chain” Cyclodepsipeptides of Marine Origin

open access: yesMarine Drugs, 2013
Since the late 1980s, a large number of depsipeptides that contain a new topography, referred to as “head-to-side-chain” cyclodepsipeptides, have been isolated and characterized.
Marta Pelay-Gimeno   +2 more
doaj   +1 more source

Exploring the selectivity and engineering potential of an NRPS condensation domain involved in the biosynthesis of the thermophilic siderophore fuscachelin

open access: yesFrontiers in Catalysis, 2023
In nonribosomal peptide synthesis, condensation (C) domains are key catalytic domains that most commonly link carrier protein bound substrates to form peptides or depsipeptides.
Y. T. Candace Ho   +28 more
doaj   +1 more source

Phosphonanaloga von Aminosäuren und Peptiden: Synthese der Phosphonanaloga von Depsipeptiden mittels der Passerini-Reaktion.

open access: yesCHIMIA, 1983
Synthesis of phosphorous analogues of tri- and tetra-depsipeptides 4 involving the Passerini reaction of diethylisocyanmethylphosphonate 3 with carbonyl compounds 2 and N-protected glycine 1 is reported.
Janusz Rachoń
doaj   +1 more source

Salinamides, Antiinflammatory Depsipeptides from a Marine Streptomycete

open access: yes, 2016
In addition to the previously reported antiinflammatory agents salinamides A and B from the marine isolate Streptomyces sp. CNB-091, three minor peptides are described.
William Fenical (48035)   +5 more
core   +2 more sources

A New Depsipeptide Antibiotic, Variapeptin [PDF]

open access: yesAgricultural and Biological Chemistry, 1990
A culture similar to Streptomyces variabilis was found to produce a novel cyclic hexadepsipeptide antibiotic named variapeptin. Variapeptin is structurally related to azinothricin, A83586C, and citropeptin. The antibiotic was active against Gram-positive bacteria and showed cytotoxic activity against mammalian cells.
NAKAGAWA, Masaya   +3 more
openaire   +3 more sources

Synthesis of Natural and Unnatural Cyclooligomeric Depsipeptides Enabled by Flow Chemistry. [PDF]

open access: yes, 2015
Flow chemistry has been successfully integrated into the synthesis of a series of cyclooligomeric depsipeptides of three different ring sizes including the natural products beauvericin (1 a), bassianolide (2 b) and enniatin C (1 b).
Zoe E. Wilson   +3 more
core   +3 more sources

Synthetic strategies of phosphonodepsipeptides

open access: yesBeilstein Journal of Organic Chemistry, 2021
Phosphonodepsipeptides are phosphorus analogues of depsipeptides and phosphonate-linked analogues of naturally occurring peptides. They are more stable than phosphonopeptides and have been widely applied as enzyme inhibitors, haptens for the production ...
Jiaxi Xu
doaj   +1 more source

Structural Congeners of Izenamides Responsible for Cathepsin D Inhibition: Insights from Synthesis-Derived Elucidation

open access: yesMarine Drugs, 2023
This study aimed to elucidate the structural congeners of natural izenamides A, B, and C (1–3) responsible for cathepsin D (CTSD) inhibition. Structurally modified izenamides were synthesized and biologically evaluated, and their biologically important ...
Hyun Su Kim   +6 more
doaj   +1 more source

Synthesis of 16-membered cyclic depsipeptides via direct amide cyclization [PDF]

open access: yes, 2000
The 2,2-disubstituted 2H-azirin-3-amines 5 (3-amino-2H-azirines) were used as synthons for alpha,alpha-disubstituted alpha-amino acids in the preparation of 16-membered cyclic depsipeptides 13.
Linden, Anthony; https://orcid.org/   +25 more
core   +1 more source

Total Syntheses of Cathepsin D Inhibitory Izenamides A, B, and C and Structural Confirmation of Izenamide B

open access: yesMolecules, 2019
The first total syntheses of izenamides A, B, and C, which are depsipeptides inhibitor of cathepsin D, were accomplished. In addition, the stereochemistry of izenamide B was confirmed by our syntheses.
Changjin Lim
doaj   +1 more source

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