Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Design and synthesis of a reagent for solid-phase incorporation of the phosphothreonine mimetic (2S,3R)-2-amino-3-methyl-4-phosphonobutyric acid (Pmab) into peptides in a bio-reversible phosphonyl-bis-pivaloyloxymethyl (POM) prodrug form.

ABSTRACT: Reported herein are the synthesis and solid-phase peptide incorporation of N-Fmoc-(2S,3R)-2-amino-3-methyl-4-phosphonobutyric acid bis-pivaloyloxymethyl phosphoryl ester [Fmoc-Pmab(POM)2-OH, 2] as a phosphatase-stable phosphothreonine (pThr) mimetic bearing orthogonal protection suitable for the synthesis of Pmab-containing peptides having bio-reversible protection of the phosphonic acid moiety. This represents the first report of a bio-reversibly protected pThr mimetic in a form suitable for facile solid-phase peptide synthesis.

SUBMITTER: Qian WJ

PROVIDER: S-EPMC3800486 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature

ACCESS DATA

Json Xml

Publications

Design and synthesis of a reagent for solid-phase incorporation of the phosphothreonine mimetic (2S,3R)-2-amino-3-methyl-4-phosphonobutyric acid (Pmab) into peptides in a bio-reversible phosphonyl-bis-pivaloyloxymethyl (POM) prodrug form.

Qian Wen-Jian WJ Burke Terrence R TR

Amino acids 20130802 5

Reported herein are the synthesis and solid-phase peptide incorporation of N-Fmoc-(2S,3R)-2-amino-3-methyl-4-phosphonobutyric acid bis-pivaloyloxymethyl phosphoryl ester [Fmoc-Pmab(POM)2-OH, 2] as a phosphatase-stable phosphothreonine (pThr) mimetic bearing orthogonal protection suitable for the synthesis of Pmab-containing peptides having bio-reversible protection of the phosphonic acid moiety. This represents the first report of a bio-reversibly protected pThr mimetic in a form suitable for fa ...[more]

PMID: 23907438

Similar Datasets

Gliocidin is a nicotinamide mimetic prodrug that targets glioblastoma

Project description:Glioblastoma is incurable and in urgent need of improved therapeutics. We identify a small compound, Gliocidin, that kills glioblastoma cells while sparing nontumor replicative cells. Gliocidin activity targets a de novo purine synthesis vulnerability in glioblastoma through indirect inhibition of inosine monophosphate dehydrogenase 2 (IMPDH2). IMPDH2 blockade reduces intracellular guanine nucleotide levels causing nucleotide imbalance, replication stress, and tumor cell death. Gliocidin is a prodrug anabolized into its tumoricidal metabolite, Gliocidin-adenine dinucleotide (GAD), by the enzyme nicotinamide nucleotide adenylyltransferase (NMNAT1) of the NAD+ salvage pathway. The cryo-EM structure of GAD together with IMPDH2 demonstrates its entry, deformation, and blockade of the NAD+ pocket. In vivo, Gliocidin penetrates the blood brain barrier and extends orthotopic murine glioblastoma mouse survival. The DNA alkylating agent, temozolomide, induces Nmnat1 expression causing synergistic tumor killing and additional survival benefit in orthotopic patient-derived xenograft models. This study brings Gliocidin to light as a prodrug with potential to improve the survival of glioblastoma patients.

2024-10-30 | GSE277301 | GEO

Asymmetric synthesis of ?-alkenyl homoallylic primary amines via 1,2-addition of Grignard reagent to ?,?-unsaturated phosphonyl imines.

Project description:A series of chiral N-phosphonyl protected ?-alkenyl homoallylic primary amines were synthesized by asymmetric addition of allylmagnesium bromide Grignard reagent towards chiral ?,?-unsaturated imines. Only 1,2-adduct was obtained for all the imines with good yields and excellent diastereoselectivities. The chiral auxiliary could be easily removed under simple conditions, giving free multiple functionalized primary amines.

| S-EPMC3804338 | biostudies-literature

Enantioselective synthesis of (2R, 3S)- and (2S, 3R)-4,4,4-trifluoro-N-Fmoc-O-tert-butyl-threonine and their racemization-free incorporation into oligopeptides via solid-phase synthesis.

Project description:An efficient method for the enantioselective synthesis of (2R, 3S)- and (2S, 3R)-4,4,4-trifluoro-N-Fmoc-O-tert-butyl-threonine on multigram scales was developed. Absolute configurations of the two stereoisomers were ascertained by X-ray crystallography. Racemization-free coupling conditions for the incorporation of tfT into oligopeptides were then explored. For solution-phase synthesis, tfT racemization was not an issue under conventional coupling conditions. For solid-phase synthesis, the following conditions were identified to achieve racemization-free synthesis: if tfT (3.0 equiv) was not the first amino acid to be linked to the resin (1.0 equiv), the condition is 2.7 equiv DIC/3.0 equiv HOBt as the coupling reagent at 0 degrees C for 20 h; if tfT (3.0 equiv) was the first amino acid to be linked to the resin (1.0 equiv), then 1.0 equiv of CuCl(2) needs to be added to the coupling reagent.

| S-EPMC2892391 | biostudies-literature

Crystal structure of (2S/2R,3S/3R)-3-hydroxy-2-phenyl-chroman-4-one.

Project description:In the title mol-ecule, C15H12O3, the C atoms bearing the hy-droxy group and the phenyl ring are disordered over two sets of sites with refined occupancies of 0.573?(7) and 0.427?(7). There is also disorder of the phenyl ring but the hy-droxy group was refined as ordered. The dihedral angles between the benzene ring of the chromane ring system and the phenyl ring are 89.7?(2)° for the major component of disorder and 72.1?(3)° for the minor component. Both disorder components of the the di-hydro-pyran ring are in a half-chair conformation. In the crystal, mol-ecules are linked by pairs of O-H?O hydrogen bonds, forming inversion dimers with an R 2 (2)(10) graph-set motif. Weak C-H?? inter-actions link these dimers into ladders along [001].

| S-EPMC4384603 | biostudies-literature

(3R,4S,5S)-4-Hydr-oxy-3-methyl-5-[(2S,3R)-3-methyl-pent-4-en-2-yl]tetra-hydro-furan-2-one.

Project description:The title compound, C(11)H(18)O(3), was synthesized to prove the relative configuration of the corresponding acyclic C1-C8 stereopentade. It crystallizes with two mol-ecules in the asymmetric unit, which show only slight differences. The mol-ecules are linked via O-H⋯O hydrogen bonds, resulting in two crystallographically independent chains of mol-ecules propagating in the a-axis direction. The absolute configuration was known from the synthesis.

| S-EPMC2962143 | biostudies-literature

(2S,3R,4R,5R)-3,4-Dihydr-oxy-5-(hydroxy-meth-yl)pyrrolidine-2-carboxylic acid [(2S,3R,4R,5R)-3,4-dihydr-oxy-5-(hydroxy-meth-yl)proline].

Project description:The crystal structure of the title compound, C(6)H(11)NO(5), establishes the relative configuration at the four stereogenic centres; the absolute configuration is determined by the use of d-glucuronolactone as the starting material for the synthesis. Mol-ecules are linked by inter-molecular O-H?O and N-H?O hydrogen bonds into a three-dimensional network, with each mol-ecule acting as a donor and acceptor for five hydrogen bonds.

| S-EPMC2970405 | biostudies-other

Crystal structure of [(2S,3R)-3-hy-droxy-3-phenyl-butan-2-yl]pyrrolidinium chloride.

Project description:In the title mol-ecular salt, C14H22NO(+)·Cl(-), the pyrrolidinium ring adopts a twisted conformation about one of the N-C bonds. It is oriented at a dihedral angle of 42.0 (1)° with respect to the benzene ring. The torsion angle for the central N-C-C-Car (ar = aromatic) linkage is 163.74 (15)°. In the crystal, the components are linked via N-H⋯Cl and O-H⋯Cl hydrogen bonds, forming zigzig chains along the b-axis direction. These chains are connected along the c axis by very weak C-H⋯π inter-actions, forming a two-dimensional supra-molecular network.

| S-EPMC4647393 | biostudies-literature

(3R,4R,5S)-4-Hydr-oxy-3-methyl-5-[(2S,3R)-3-methyl-pent-4-en-2-yl]-4,5-dihydro-furan-2(3H)-one.

Project description:The relative configuration of the title compound, C(11)H(18)O(3), which was synthesized using a catalytic asymmetric Gosteli-Claisen rearrangement, a diastereoselective reduction with K-Selectride and an Evans aldol addition, was corroborated by single-crystal X-ray diffraction analysis. The five-membered ring has an envelope conformation with a dihedral angle of 29.46 (16)° between the coplanar part and the flap (the hydr-oxy-bearing ring C atom). In the crystal, mol-ecules are connected via bifurcated O-H⋯(O,O) hydrogen bonds, generating [010] chains.

| S-EPMC2971977 | biostudies-literature

(2S,3R)-2-[(4-Ethyl-2,3-dioxopiperazin-1-yl)carbonyl-amino]-3-hydroxy-butyric acid monohydrate.

Project description:In the title compound, C(11)H(17)N(3)O(6)·H(2)O, an important building block of the medicine cefbuperazone sodium, the piperazine ring adopts a screw-boat conformation. Inter-molecular O-H?O and intra-molecular N-H?O hydrogen bonds are observed. The water mol-ecule participates as both donor and acceptor in this framework.

| S-EPMC2961655 | biostudies-literature

(S,2S,3R)-2-(2-Methyl-propane-2-sulfin-amido)-3-phenyl-butyronitrile.

Project description:The absolute configuration has been determined for the title compound, C(14)H(20)N(2)OS. Inter-molecular N-H?O hydrogen bonds are observed in the crystal packing, forming infinitive one-dimensional chains with the base vector [100].

| S-EPMC2971194 | biostudies-other

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