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The first total synthesis of the highly N-methylated acetylene-containing lipopeptide jahanyne, an apoptosis-inducing natural product from marine cyanobacteria, is reported. A late-stage solution-phase coupling enabled introduction of the C-terminal ketone pyrrolidine moiety. A modified Fmoc solid-phase synthesis strategy was adopted to effectively couple multiple sterically hindered N-methylated amino acids while suppressing epimerization. The total synthesis has enabled confirmation of the proposed absolute configuration of natural jahanyne.
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Name: Organic letters
A counterintuitive freezing-induced peptide ligation was discovered during the total synthesis of human interferon-ε (hIFN-ε) which blocks HIV infection through unique mechanisms. The successful syn...
An improved, modular synthesis of rigid, geometrically well-defined, alkyne-substituted tetracene (1) and pentacene (2) dimers is reported. The synthesis is rooted in sequential Diels-Alder reactions ...
Described here is a concise total synthesis of the highly potent nicotinic acetylcholine receptor antagonist hosieine A in racemic ((±)-2) and enantioenriched ((+)-2) forms. The synthesis requires on...
Acetylene (IUPAC name: ethyne) is a colorless, gaseous hydrocarbon, composed of two triple bonded carbon atoms attached to hydrogens (C2H2). When microbiologists and biogeochemists think of acetylene,...
Described herein is a synthetic strategy for the total synthesis of phomoidride D. This highly efficient and stereoselective approach provides rapid assembly of the carbocyclic core by way of a tandem...
Title: Vaccination with PD-L1 peptide with Montanide against multiple myeloma after high dose chemotherapy with stem cell support. A phase I first-in-human study. Hypothesis: In this tria...
The prognosis of patients with newly diagnosed glioblastoma is dismal despite recent therapeutic improvements Using standard therapy with temozolomide (TMZ) and radiotherapy (60 Gy), the m...
Previous work has shown that gelatin supplementation could increase collagen synthesis in humans. In this study subjects consume placebo, 5 or 15 g of gelatin with a standard amount of vit...
To evaluate the chemical efficacy and safety of intranasally administered peptide T on neurocognitive function in HIV seropositive individuals. Previous studies have shown that treatment ...
Cholesterol is the precursor of glucocorticoids, mineralocorticoids and sex steroids. Both adrenal and non-adrenal (ovarian + testicular) all steroid hormones are primarily synthesized usi...
The simplest two carbon alkyne with the formula HCCH.
A methylated nucleotide base found in eukaryotic DNA. In ANIMALS, the DNA METHYLATION of CYTOSINE to form 5-methylcytosine is found primarily in the palindromic sequence CpG. In PLANTS, the methylated sequence is CpNpGp, where N can be any base.
Compounds which inhibit the synthesis of proteins. They are usually ANTI-BACTERIAL AGENTS or toxins. Mechanism of the action of inhibition includes the interruption of peptide-chain elongation, the blocking the A site of ribosomes, the misreading of the genetic code or the prevention of the attachment of oligosaccharide side chains to glycoproteins.
A highly basic, 28 amino acid neuropeptide released from intestinal mucosa. It has a wide range of biological actions affecting the cardiovascular, gastrointestinal, and respiratory systems and is neuroprotective. It binds special receptors (RECEPTORS, VASOACTIVE INTESTINAL PEPTIDE).
A protein domain of about 70 amino acids in length that folds into a sandwich structure consisting of a beta sheet, alpha helix, and C-terminal hairpin loop which forms a hydrophobic methylated-DNA binding patch. It binds to methylated CPG ISLANDS in eukaryotes and occurs with other DNA and CHROMATIN binding domains such as AT-HOOK MOTIFS in eukaryotic DNA BINDING PROTEINS.