Category: 71989-31-6

Wang, Siyao published the artcileSite-selective itaconation of complex peptides by photoredox catalysis, Recommanded Product: Fmoc-Pro-OH, the publication is Angewandte Chemie, International Edition (2022), 61(5), e202111388, database is CAplus and MEDLINE.

Site-selective peptide functionalization provides a straightforward and cost-effective access to diversify peptides for biol. studies. Among many existing non-invasive peptide conjugations methodologies, photoredox catalysis has emerged as one of the powerful approaches for site-specific manipulation on native peptides. Herein, we report a highly N-termini-specific method to rapidly access itaconated peptides and their derivatives through a combination of transamination and photoredox conditions. This strategy exploits the facile reactivity of peptidyl-dihydropyridine in the complex peptide settings, complementing existing approaches for bioconjugations with excellent selectivity under mild conditions. Distinct from conventional methods, this method utilizes the highly reactive carbamoyl radical derived from a peptidyl-dihydropyridine. In addition, this itaconated peptide can be further functionalized as a Michael acceptor to access the corresponding peptide-protein conjugate.

Angewandte Chemie, International Edition published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C8H6ClF3, Recommanded Product: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Peng published the artcileRational design of dual-functional peptide-based chemosensor for sequential detection of Ag⁺ (AgNPs) and S^2- ions by fluorescent and colorimetric changes and its application in live cells, real water samples and test strips, Application of Fmoc-Pro-OH, the publication is Microchemical Journal (2022), 107326, database is CAplus.

A novel bifunctional chemosensor L with excellent fluorescent group FITC labeled at tetrapeptide (CysProGlyHis-NH₂) was designed and developed. L exhibited fluorescent quenching response and unique visual color change for Ag⁺ and AgNPs in aqueous solution The stoichiometry between L and Ag⁺ was confirmed to be 1:1 based on fluorescent titration, Job¡äs plot, ESI-HRMS and theor. calculation studies. In particular, the limit of detection (LOD) of L for the detection of Ag⁺ and AgNPs were calculated as 3.35 nM and 4.57 nM, resp. In addition, the L-Ag complex as a new relay chemosensor could be highly selective detection of S2-via obvious color and fluorescence changes, which could be monitored by the naked eye. The LOD for S^2- was as low as to be 28.17 nM with high sensitivity. Furthermore, L indicated a rapid response (within 50 s), exciting circularity (more than 10 times) and wide pH response range (6 ? 12). Moreover, in view of excellent stability, low cytotoxicity and biocompatibility, we further successfully applied L for Ag⁺, AgNPs and S^2- detection and imaging in living cells, real water samples and test strips.

Microchemical Journal published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C9H21NO3, Application of Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sun, Xue-Yi published the artcileReliable folding of hybrid tetrapeptides into short ¦Â-hairpins, Synthetic Route of 71989-31-6, the publication is Chinese Chemical Letters (2022), 33(1), 257-261, database is CAplus.

Five hybrid tetrapeptides, each consisting a central dipeptide segment of ¦Á-amino acid residues flanked by two aromatic ¦Ã-amino acid residues, are found to fold into well-defined ¦Â-hairpin conformations as shown by NMR, computational study, and X-ray structures. The turn loop of this ¦Â-hairpin motif accommodates different two-residue ¦Á-amino acid sequences from the highly flexible Gly-Gly, to the more restricted D-Pro-Gly. The presence of ¦Á-amino acid side chains enhances the stabilities of the ¦Â-hairpins with the exception of D-Pro-Gly-which results in destabilization. Based on this hairpin/turn motif, a variety of different dipeptide sequences of ¦Á-amino acids which rarely occur in ¦Â-turns can be introduced and presented as two-residue loops.

Chinese Chemical Letters published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C3H7NO2, Synthetic Route of 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wu, Bo published the artcileA dual-targeting peptide facilitates targeting anti-inflammation to attenuate atherosclerosis in ApoE^-/- mice, Quality Control of 71989-31-6, the publication is Chemical Communications (Cambridge, United Kingdom) (2022), 58(62), 8690-8693, database is CAplus and MEDLINE.

We report a peptidic dual-targeting drug delivery platform (integrins targeting and self-assembly instructed by matrix metalloproteinases) towards inflamed endothelial cells, which improved the anti-inflammatory ability of the loaded drug (i.e., puerarin) in vitro and thus improved the antiatherogenic effect of the loaded drug (i.e., puerarin) in vivo.

Chemical Communications (Cambridge, United Kingdom) published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C13H10O2, Quality Control of 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Lin, Nai-Pin published the artcileSynthesis and characterization of phenylboronic acid-modified insulin with glucose-dependent solubility, Application In Synthesis of 71989-31-6, the publication is Frontiers in Chemistry (Lausanne, Switzerland) (2022), 859133, database is CAplus and MEDLINE.

Glucose-responsive insulin represents a promising approach to regulate blood glucose levels. We previously showed that attaching two fluorophenylboronic acid (FPBA) residues to the C-terminal B chain of insulin glargine led to glucose-dependent solubility Herein, we demonstrated that relocating FPBA from B chain to A chain increased the baseline solubility without affecting its potency. Furthermore, increasing the number of FPBA groups led to increased glucose-dependent solubility

Frontiers in Chemistry (Lausanne, Switzerland) published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Application In Synthesis of 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Chen, Yaoxia published the artcileSupramolecular nanofibers with superior anti-angiogenesis and antitumor properties by enzyme-instructed self-assembly (EISA), Product Details of C20H19NO4, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2021), 130531, database is CAplus.

Currently, combination therapy has become a popular research topic in cancer therapy. However, the outcome of the current combination therapy strategy does not satisfy the demand for clin. applications because of factors such as their overlapping toxicities, poor drug payload, and inevitable therapy resistance. Supramol. self-assembly of peptides holds great potential for solving relevant problems and achieving superior therapeutic effects. In this study, we aimed to propose supramol. self-assemblies based on a combination therapy strategy, consisting of a heptapeptide A7R for the inhibition of angiogenesis, the chemotherapeutic drug HCPT for treating numerous tumors with high efficacy, and an efficient self-assembling mol. FFY to improve drug loading and cell permeability. We regulated the secondary structure of nanomaterials by optimizing the pathways of self-assembly and significantly improved the affinity of A7R peptide to NRP-1. Endothelial tube formation in Matrigel and a tumor mouse model (in vivo) were then performed to demonstrate the superior antitumor effects of our supramol. self-assemblies both in vitro and in vivo. In summary, this work not only provides a promising platform for the development of effective combination therapy, but also offers a useful strategy to prepare self-assembled nanomaterials with optimized performance.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Product Details of C20H19NO4.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Kang, Ziyao published the artcileTransferrin receptor targeting segment T7 containing peptide gene delivery vectors for efficient transfection of brain tumor cells, Safety of Fmoc-Pro-OH, the publication is Drug Delivery (2022), 29(1), 2375-2385, database is CAplus and MEDLINE.

Successful gene therapy for brain tumors are often limited by two important factors, the existence of blood brain barrier (BBB) and inefficient transfection of brain tumor cells. In this study, we designed a series of peptide-based gene delivery vectors decorated with T7 segment for binding the transferrin (Tf) receptors which were highly expressed on brain tumor cells, and evaluated their ability of gene delivery. The physicochem. properties of peptide vectors or peptide/DNA complexes were studied as well. The in vitro transfection efficiency was investigated in normal and glioma cell lines. Among these complexes, PT-02/DNA complexes showed the highest transfection efficiency in glioma cells and low cytotoxicity in normal cell lines, and it could transport DNA across the BBB model in vitro. Furthermore, PT-02/DNA could deliver pIRES2-EGFP into the brain site of zebrafish in vivo. The designed peptide vectors offered a promising way for glioma gene therapy.

Drug Delivery published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Safety of Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wang, Guo-Qiao published the artcileConformational Transition-Triggered Disassembly of Therapeutic Peptide Nanomedicine for Tumor Therapy, Safety of Fmoc-Pro-OH, the publication is Advanced Healthcare Materials (2021), 10(24), 2100333, database is CAplus and MEDLINE.

Cationic therapeutic peptides have received widespread attention due to their excellent antibacterial and antitumor properties. However, most of these peptides have undesirable delivery efficiency and high hemolytic toxicity due to the pos. charged ¦Á-helix structure containing many lysine and arginine, which may restrict its in vivo applications. Herein, a conformationally transformed therapeutic peptide Pep-HCO₃ modified with bicarbonates on guanidine groups is designed. Such a design allows Pep-HCO₃ ((nap-RAGLQFPVGRLLRRLLRRLLR) nHCO₃) to self-assemble into nanoparticles (NP-Pep) due to disrupting helix folding and the formation of intermol. hydrogen bonding between bicarbonates and guanidine groups. When pH is from 7.4 to 6.5 at the tumor sites, guanidine bicarbonate can be hydrolyzed to form CO₂ and guanidine groups, resulting in the disassembling of the NP-Pep into monomers ¦Á-Pep with a pos. charged ¦Á-helix structure. In vivo, NP-Pep not only inhibits the tumor growth of xenografted mice with a twofold enhanced inhibition rate compared with ¦Á-Pep treatment group, but also significantly reduces the hemolytic toxicity by responding to the pH of tumor microenvironment. Therefore, the strategy of conformational transition-triggered disassembly of nanoparticles allows efficient delivery of cationic therapeutic peptides and lowering the hemolytic toxicity, which may provide an avenue for developing high-performance cationic peptide in vivo applications.

Advanced Healthcare Materials published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H17FO4S, Safety of Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Hattori, Tomohiro published the artcileSynthesis of silacyclic dipeptides: Peptide elongation at both N- and C-termini of dipeptide, Name: Fmoc-Pro-OH, the publication is Journal of the American Chemical Society (2022), 144(4), 1758-1765, database is CAplus and MEDLINE.

A new type of peptide bond formation utilizing silacyclic amino acids or peptides is described. This work has the following advantages: (1) imidazolylsilane is a highly fascinating coupling reagent for dipeptide synthesis from N-,C-terminal unprotected amino acids with amino acid tert-Bu esters; (2) deprotection of the tert-Bu ester at the C-terminus and cyclization sequentially proceed depending on reaction conditions to afford novel silacyclic dipeptides; (3) the cyclized products show a remarkable capacity as substrates of peptide elongation because the silacyclic compounds can act as both nucleophiles and electrophiles, and this capacity lead to one-pot site-selective tetra- and oligopeptide syntheses. These innovative advantages will help to simplify classical peptide synthesis significantly.

Journal of the American Chemical Society published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C20H19NO4, Name: Fmoc-Pro-OH.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wu, Ying published the artcileAxinellasins A-D, immunosuppressive cycloheptapeptide diastereomers, discovered via a precursor ion scanning-supercritical fluid chromatography strategy from the marine sponge Axinella species, SDS of cas: 71989-31-6, the publication is Organic Letters (2022), 24(3), 934-938, database is CAplus and MEDLINE.

The precursor ion scanning-supercritical fluid chromatog. (PI-SFC) method was applied to explore new methionine sulfoxide-containing cycloheptapeptides, axinellasins A-D (1-4), from the marine sponge Axinella sp. Their structures, including absolute configurations, were elucidated by detailed spectroscopic analyses and X-ray crystallog. The total synthesis of axinellasin D was completed via an Fmoc (Fmoc = 9-fluorenylmethoxycarbonyl) solid/solution-phase synthesis. Axinellasins A-D exhibited immunosuppressive effects via inhibition of T and B cell proliferation, and Axinellasin A and D showed better inhibitory activities than their corresponding diastereomers.

Organic Letters published new progress about 71989-31-6. 71989-31-6 belongs to catalysis-chemistry, auxiliary class Amino acide derivatives,pyrrolidine, name is Fmoc-Pro-OH, and the molecular formula is C17H18N2O6, SDS of cas: 71989-31-6.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia