Results 41 to 50 of about 433,171 (190)

Diarylethene‐Containing Photoswitchable Analogues of Tubulysins—Design, Synthesis, Biological, and Structural Evaluation

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Diarylethene‐containing cyclic tubulysin analogues were designed, synthesized, and evaluated as light‐responsive cytotoxic agents. One analogue showed reversible photoswitching, photoregulated tubulin polymerization inhibition, and photoform‐dependent cytotoxicity.
Anna Iampolska   +9 more
wiley   +1 more source

Total Synthesis and Assignment of the Side Chain Stereochemistry of LI-F04a: An Antimicrobial Cyclic Depsipeptide

open access: yes, 2016
The total synthesis of the potent antifungal and antibiotic cyclic depsipeptide LI-F04a and its side chain epimer was accomplished using macrolactonization to assemble the cyclic peptide core, followed by attachment of the 15-guanidino-3 ...
Katrina A. Jolliffe (401409)   +2 more
core   +1 more source

Bouillonamide: A Mixed Polyketide–Peptide Cytotoxin from the Marine Cyanobacterium Moorea bouillonii

open access: yesMarine Drugs, 2013
The tropical marine cyanobacterium, Moorea bouillonii, has gained recent attention as a rich source of bioactive natural products. Continued chemical investigation of this cyanobacterium, collected from New Britain, Papua New Guinea, yielded a novel ...
Lik Tong Tan   +2 more
doaj   +1 more source

Epigenetic Dysregulation of Somatostatin Receptors (SSTR) 1–5 and Therapeutic Implications in Neuroendocrine and Non‐Neuroendocrine Malignancies

open access: yesInternational Journal of Cancer, EarlyView.
ABSTRACT Somatostatin receptors (SSTR) mediate the antiproliferative, antisecretory, and proapoptotic effects of somatostatin and its synthetic analogs. Their surface expression on neuroendocrine tumor (NET) cells is required for somatostatin analog therapy and radiopharmaceutical therapy (RPT).
Neeraj Kumari   +10 more
wiley   +1 more source

Anti-Parasitic Compounds from Streptomyces sp. Strains Isolated from Mediterranean Sponges

open access: yesMarine Drugs, 2010
Actinomycetes are prolific producers of pharmacologically important compounds accounting for about 70% of the naturally derived antibiotics that are currently in clinical use. In this study, we report on the isolation of Streptomyces sp.
Heidrun Moll   +5 more
doaj   +1 more source

Hydroxamic Acids as HDAC Inhibitor Drug Leads for Malaria

open access: yesMedicinal Research Reviews, EarlyView.
ABSTRACT Malaria is a global health threat, with an estimated 282 million cases and 610,000 malaria‐associated deaths reported in 2024. Most mortality is due to infection by Plasmodium falciparum parasites, with the highest burden occurring in Sub‐Saharan Africa.
Wisam A. Dawood   +7 more
wiley   +1 more source

Cyclic cohomology after the excision theorem of Cuntz and Quillen [PDF]

open access: yes, 2013
The excision theorem of Cuntz and Quillen established the existence of a six term exact sequence in the bivariant periodic cyclic cohomology HP*(–,–) associated with an arbitrary algebra extension 0 ? S ? P ? Q ? 0.
Jacek Brodzki, Brodzki, Jacek
core   +1 more source

Boronic Acid Inhibitors of β‐Lactamases: A Promising Strategy Against Antimicrobial Resistance

open access: yesMedicinal Research Reviews, EarlyView.
ABSTRACT The rise of antimicrobial resistance (AMR) poses a critical threat to global health, mostly due to the proliferation of β‐lactamases, a class of enzymes responsible for the inactivation of β‐lactam antibiotics. Among the most promising strategies to restore β‐lactam efficacy is the use of β‐lactamase inhibitors (BLIs), with boronic acid ...
Nicolò Santi   +4 more
wiley   +1 more source

Georgamide, a New Cyclic Depsipeptide with an Alkynoic Acid Residue from an Australian Cyanobacterium

open access: yes, 2016
A cyclic depsipeptide, georgamide (1), was isolated from an Australian cyanobacterium and characterized by spectroscopic means. The constituent units were five amino acid residues, one each of l-Thr, l-Pro, l-Val, N-Me-l-Val, and N-Me-l-Phe, and two ...
Karen L. Erickson (2254336)   +1 more
core   +1 more source

Octreotide Conjugates for Tumor Targeting and Imaging

open access: yesPharmaceutics, 2019
Tumor targeting has emerged as an advantageous approach to improving the efficacy and safety of cytotoxic agents or radiolabeled ligands that do not preferentially accumulate in the tumor tissue. The somatostatin receptors (SSTRs) belong to the G-protein-
Eduard Figueras   +14 more
doaj   +1 more source

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