Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Synthesis and bioactivity of nobilamide B.

ABSTRACT: An alternative and facile solution/solid-phase approach is reported for the total synthesis of neuroactive peptide, nobilamide B. Z-Dhb was formed in solution via EDC/CuCl induced elimination. The solid-phase synthesis employed HBTU/Oxyma Pure™ coupling using Barlos resin. Synthetic nobilamide B was also found to be neuroactive in primary cultures of dorsal root ganglion (DRG) neurons.

SUBMITTER: Jacinto MP

PROVIDER: S-EPMC4497583 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Synthesis and bioactivity of nobilamide B.

Jacinto M P V MP Flores M S MS Lin Z Z Concepcion G P GP Schmidt E W EW Faulkner S S Villaraza A J L AJ

RSC advances 20140101 71

An alternative and facile solution/solid-phase approach is reported for the total synthesis of neuroactive peptide, nobilamide B. <i>Z</i>-Dhb was formed in solution via EDC/CuCl induced elimination. The solid-phase synthesis employed HBTU/Oxyma Pure™ coupling using Barlos resin. Synthetic nobilamide B was also found to be neuroactive in primary cultures of dorsal root ganglion (DRG) neurons. ...[more]

PMID: 26167276

Similar Datasets

Synthesis and bioactivity of Luffarin I.

Project description:The first synthesis of Luffarin I, sesterterpenolide isolated from sponge Luffariella geometrica, has been accomplished from commercially available sclareol. The key strategy involved in this synthesis is the diastereoselective reduction of an intermediate ketone. Luffarin I against human solid tumor cell lines showed antiproliferative activities (GI50) in the range 12-17 ?M.

| S-EPMC4413218 | biostudies-literature

Synthesis and Bioactivity of Thiosemicarbazones Containing Adamantane Skeletons.

Project description:Reaction of 4-(1-adamantyl)-3-thiosemicarbazide (1) with numerous substituted acetophenones and benzaldehydes yielded the corresponding thiosemicarbazones containing adamantane skeletons. The synthesized compounds were evaluated for their in vitro activities against some Gram-positive and Gram-negative bacteria, and the fungus Candida albicans, and cytotoxicity against four cancer cell lines (Hep3B, HeLa, A549, and MCF-7). All of them showed good antifungal activity against Candida albicans. Compounds 2c, 2d, 2g, 2j and 3a, 3e, 3g displayed significant inhibitory activity against Enterococcus faecalis. Compounds 2a, 2e, 2h, 2k and 3j had moderate inhibitory potency against Staphylococcus aureus. Compounds 2a, 2e and 2g found so good inhibitory effect on Bacillus cereus. Compounds 2d and 2h, which contain (ortho) hydroxyl groups on the phenyl ring, were shown to be good candidates as potential agents for killing the tested cancer cell lines, i.e., Hep3B, A549, and MCF-7. Compounds 2a-c, 2f, 2g, 2j, 2k, 3g, and 3i were moderate inhibitors against MCF-7.

| S-EPMC7024387 | biostudies-literature

Design, synthesis and bioactivity of novel glycosylthiadiazole derivatives.

Project description:A series of novel glycosylthiadiazole derivatives, namely 2-phenylamino-5-glycosyl-1,3,4-thiadiazoles, were designed and synthesized by condensation between sugar aldehydes A/B and substituted thiosemicarbazide C followed by oxidative cyclization by treating with manganese dioxide. The original fungicidal activities results showed that some title compounds exhibited excellent fungicidal activities against Sclerotinia sclerotiorum (Lib.) de Bary and Pyricularia oryzae Cav, especially compounds F-5 and G-8 which displayed better fungicidal activities than the commercial fungicide chlorothalonil. At the same time, the preliminary studies based on the Elson-Morgan method indicated that many compounds exhibited some inhibitory activity toward glucosamine-6-phosphate synthase (GlmS). The structure-activity relationships (SAR) are discussed in terms of the effects of the substituents on both the benzene and the sugar ring.

| S-EPMC6271630 | biostudies-literature

Total Synthesis and Bioactivity Mapping of Geodiamolide H.

Project description:The first total synthesis of the actin-stabilizing marine natural product geodiamolide H was achieved. Solid-phase based peptide assembly paired with scalable stereoselective syntheses of polyketide building blocks and an optimized esterification set the stage for investigating the key ring-closing metathesis. Geodiamolide H and synthetic analogues were characterized for their toxicity and for antiproliferative effects in cellulo, by characterising actin polymerization induction in vitro, and by docking on the F-actin target and property computation in silico, for a better understanding of structure-activity relationships (SAR). A non-natural analogue of geodiamolide H was discovered to be most potent in the series, suggesting significant potential for tool compound design.

| S-EPMC8453818 | biostudies-literature

5-oxo-15-HETE: total synthesis and bioactivity.

Project description:The first total synthesis of 6(E),8(Z),11(Z),13(E) 5-oxo-15-HETE 4 was accomplished. The synthetic material was evaluated with calcium mobilization assay and compared with 5-oxo-ETE the natural ligand for the OXE receptor.

| S-EPMC3052199 | biostudies-literature

Synthesis and Bioactivity Characterization of Scutellarein Sulfonated Derivative.

Project description:Scutellarin (1) has been widely used to treat acute cerebral infarction in clinic, but poor aqueous solubility decreases its bioavailability. Interestingly, scutellarin (1) could be metabolized into scutellarein (2) in vivo. In this study, a sulfonic group was introduced at position C-8 of scutellarein (2) to enhance the aqueous solubility of the obtained derivative (3). DPPH (1,1-diphenyl-2-picrylhydrazyl)-radical scavenging ability and antithrombic activity were also conducted to determine its bioactivity. The result showed that scutellarein derivate (3) could be a better agent for ischemic cerebrovascular disease treatment.

| S-EPMC6152701 | biostudies-literature

Efficient Synthesis and Bioactivity of Novel Triazole Derivatives.

Project description:Triazole pesticides are organic nitrogen-containing heterocyclic compounds, which contain 1,2,3-triazole ring. In order to develop potential glucosamine-6-phosphate synthase (GlmS) inhibitor fungicides, forty compounds of triazole derivatives were synthesized in an efficient way, thirty nine of them were new compounds. The structures of all the compounds were confirmed by high resolution mass spectrometer (HRMS), ¹H-NMR and 13C-NMR. The fungicidal activities results based on means of mycelium growth rate method indicated that some of the compounds exhibited good fungicidal activities against P. CapasiciLeonian, Sclerotinia sclerotiorum (Lib.) de Bary, Pyricularia oryzae Cav. and Fusarium oxysporum Schl. F.sp. vasinfectum (Atk.) Snyd. & Hans. at the concentration of 50 µg/mL, especially the inhibitory rates of compounds 1-d and 1-f were over 80%. At the same time, the preliminary studies based on the Elson-Morgan method indicated that the compounds exhibited some inhibitory activity toward glucosamine-6-phosphate synthase (GlmS). These compounds will be further studied as potential antifungal lead compounds. The structure-activity relationships (SAR) were discussed in terms of the effects of the substituents on both the benzene and the sugar ring.

| S-EPMC6017136 | biostudies-other

Total synthesis and bioactivity of 18(R)-hydroxyeicosapentaenoic acid.

Project description:Resolvins are family of lipid mediators derived from omega-3 polyunsaturated fatty acids, which are generated during the resolution phase of acute inflammation. Resolvin E1 is biosynthesized from eicosapentaenoic acid via 18(R)-hydroxyeicosapentaenoic acid (18R-HEPE) in the Cox-2 and lipoxygenase mediated pathway and has proven to exhibit potent anti-inflammatory activity. We report herein the first total chemical synthesis of 18R-HEPE and demonstrate that this compound displays in vivo bioactivity by blocking neutrophil infiltration in a murine model of zymosan-induced peritonitis.

| S-EPMC3253701 | biostudies-literature

Synthesis, bioactivity, and enzymatic modification of antibacterial thiotetromycin derivatives.

Project description:Thiotetronate-containing natural products, including thiolactomycin, thiotetromycin, and thiotetroamide, are potent, broad-spectrum antibacterial compounds that target fatty acid synthesis in bacteria. Natural modifications at the C-5 dialkyl position in this molecular series result in pronounced bioactivity differences. The C-5 acetamide-containing thiotetroamide, which is the more potent antibacterial agent in this family, is biosynthesized from the C-5 ethyl analogue thiotetromycin via a unique two-enzyme process involving the cytochrome P450-amidotransferase enzyme pair TtmP-TtmN. Herein we synthesized a focused library of 17 novel thiotetromycin derivatives differing at the 5-position alkyl substituent to investigate their biological activities and their reactivity towards the hydroxylase TtmP. Although we observed marginal anti-tuberculosis activity, select thiotetromycin analogues showed antibacterial activity against an Escherichia coli ?tolC strain with IC50 values in a range of 1.9-36 ?g mL-1. Additional screening efforts highlighted select thiotetronate analogues as inhibitors of the cancer-associated enzyme nicotinamide N-methyltransferase (NNMT), with a unique scaffold compared to previously identified NNMT inhibitors. In vitro assays further showed that the TtmP P450 was capable of resolving racemic substrate mixtures and had modest promiscuity to hydroxylate derivatives with variable alkyl chains; however triple oxidation to a carboxylic acid remained specific for the natural thiotetromycin substrate. The tendency of TtmP to accept a range of unnatural substrates for hydroxylation makes it an interesting target for P450 engineering towards broader applications.

| S-EPMC6437001 | biostudies-literature

Novel Trifluoromethylcoumarinyl Urea Derivatives: Synthesis, Characterization, Fluorescence, and Bioactivity.

Project description:A series of novel trifluoromethylcoumarinyl urea derivatives were designed, synthesized, and characterized by ¹H-NMR, 13C-NMR, and HR-ESI-MS. The fluorescence spectra of the target compounds were recorded. The spectra show that most of the title compounds glow green with ?maxem of 500-517 nm, while compounds 5r, 5s, 5u, and 5l (compounds named by authors) glow violet with ?maxem of 381-443 nm. Moreover, the herbicidal and antifungal activities of the synthesized compounds were evaluated for their potential use as pesticides. The results indicate that compound 5f against the caulis of Amaranthusretroflexus and compounds 5j and 5l against the taproot of Digitariasanguinalis are equivalent to the commercial herbicide Acetochlor. Nine of the title compounds are more antifungal than commercial fungicide Carbendazim against Botrytis cinerea.

| S-EPMC6017327 | biostudies-literature

OmicsDI is part of the ELIXIR infrastructure

OmicsDI is an Elixir interoperability service. Learn more ›

Tweets

OmicsDI Databases

PRIDE
PeptideAtlas
MassIVE
JPOST Repository
Physiome Model Repository

EGA
EVA
ENA
LINCS
PAXDB
Cell Collective

MetaboLights
Metabolomics Workbench
MetabolomeExpress
GNPS
BioModels
FAIRDOMHub

ArrayExpress
dbGaP
ExpressionAtlas
GEO
NODE

Information

Databases
Help
API
Contact us
Code on GitHub
Terms of use
Submit Data