Month: November 2022

Pascual-Alfonso, Eva published the artcileEfficient synthesis of the pyrido[2,3,4-kl]acridin-4-one system common to several cytotoxic marine alkaloids, Application of (2-Pivalamidophenyl)boronic acid, the publication is Tetrahedron Letters (2003), 44(32), 6003-6005, database is CAplus.

An efficient, four-step synthesis of the pyrido[2,3,4-kl]acridin-4-one system is described, using a Suzuki coupling of a 4-iodoquinoline and a oxidative demethylation of a dimethoxyquinoline containing an anilino unit with cobalt trifluoride as the key steps.

Tetrahedron Letters published new progress about 146140-95-6. 146140-95-6 belongs to amides-buliding-blocks, auxiliary class Boronic acid and ester,Amine,Benzene,Amide,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (2-Pivalamidophenyl)boronic acid, and the molecular formula is C11H16BNO3, Application of (2-Pivalamidophenyl)boronic acid.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Vettori, L. Pecori published the artcileSynthesis of 4,9-dimethoxy-5-methyl-7H-furo[3,2-g]-1-benzopyran-7-one-6-carboxylic acid derivatives, COA of Formula: C5H8N2O, the publication is Farmaco, Edizione Scientifica (1975), 30(9), 754-60, database is CAplus.

The title compounds I (X = O, R = CN, CO2Et, CO2H, COCl, H, CONH2, CONEt2, CONH(CH2)4OH, NHCH2CHMe2, NHCH2CH2NEt2, morpholino, 2-pyridylamino, OCH2CH2NMe2, OCHMeCH2NEt2, O(CH2)3NEt2, OCH2CH2NEt2; X = NH, R = CN) were prepared from Khellinone. Thus condensation of Khellinone with NCCH2CONHR1 (R1 = H, Me, Et), CH2(CO2Et)2, CH2(CONH2)2, and CH2(CN)2 gave I (X = O, R = CN, CO2Et, CONH2; X = NH, R = CN). Hydrolysis of the ester gave I (R = CO2H), which was chlorinated and aminated.

Farmaco, Edizione Scientifica published new progress about 15029-36-4. 15029-36-4 belongs to amides-buliding-blocks, auxiliary class Nitrile,Amine,Aliphatic hydrocarbon chain,Amide, name is 2-Cyano-N-ethylacetamide, and the molecular formula is C8H11NO, COA of Formula: C5H8N2O.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Niculescu, S. P. published the artcileUsing fragment chemistry data mining and probabilistic neural networks in screening chemicals for acute toxicity to the fathead minnow, Synthetic Route of 2447-79-2, the publication is SAR and QSAR in Environmental Research (2004), 15(4), 293-309, database is CAplus and MEDLINE.

The paper is illustrating how the general data mining methodol. may be adapted to provide solutions to the problem of high throughput virtual screening of organic chems. for possible acute toxicity to the fathead minnow fish. The present approach involves mining fragment information from chem. structures and is using probabilistic neural networks to model the relationship between structure and toxicity. Probabilistic neural networks implement a special class of multivariate non-linear Bayesian statistical models. The math. principles supporting their use for value prediction purposes are clarified and their peculiarities discussed. As part of the research phase of the data mining process, a dataset consisting of 800 structures and associated fathead minnow (Pimephales promelas) 96-h LC50 acute toxicity endpoint information is used for both the purpose of identifying an advantageous combination of fragment descriptors and for training the neural networks. As a result, two powerful models are generated. Model 1 implements the basic PNN with Gaussian kernel (statistical corrections included) while Model 2 implements the PNN with Gaussian kernel and separated variables. External validation is performed using a sep. dataset consisting of 86 structures and associated toxicity information. Both learning and generalization capabilities of the two models are investigated and their limitations discussed.

SAR and QSAR in Environmental Research published new progress about 2447-79-2. 2447-79-2 belongs to amides-buliding-blocks, auxiliary class Chloride,Amine,Benzene,Amide, name is 2,4-Dichlorobenzamide, and the molecular formula is C7H5Cl2NO, Synthetic Route of 2447-79-2.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Migliorini, Filippo published the artcileA comprehensive update on the pharmacological management of heterotopic ossification following hip arthroplasty: a level I evidenced based expert opinion., Recommanded Product: 4-(5-(p-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)benzenesulfonamide, the publication is Expert opinion on pharmacotherapy (2022), 23(10), 1195-1203, database is MEDLINE.

INTRODUCTION: Heterotopic ossification (HO) of the hip joint may happen accompanying skeletal muscle trauma or surgical procedures. The pharmacological prophylaxis of heterotopic ossification (HO) following total hip arthroplasty (THA) is debated. AREAS COVERED: This expert opinion aims to systematically investigate the efficacy of current pharmacological options as prophylaxis for HO following THA. EXPERT OPINION: The current evidence identified celecoxib, naproxen, and diclofenac as best option for the prevention of HO in patients who undergo primary THA. The most appropriate pharmacotherapy for the prevention of HO is still debated and should be customized according to patients’ comorbidities and medical history. For patients with cardiovascular comorbidities, naproxen, or diclofenac should be considered along with proton pump inhibitors to prevent gastrointestinal complications. For patients with history of gastrointestinal disease, celecoxib can be recommended. These conclusions must be considered within the limitations of the present investigation. Between studies, heterogeneities in the administration protocols were evident. In some RCTs, the length of the follow-up was shorter than 12 months. The current clinical practice would benefit of high-quality recommendations and the development of the shared official guidelines.

Expert opinion on pharmacotherapy published new progress about 169590-42-5. 169590-42-5 belongs to amides-buliding-blocks, auxiliary class Sulfamide,Immunology/Inflammation,COX, name is 4-(5-(p-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)benzenesulfonamide, and the molecular formula is C17H14F3N3O2S, Recommanded Product: 4-(5-(p-Tolyl)-3-(trifluoromethyl)-1H-pyrazol-1-yl)benzenesulfonamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Eckert, Kaitlyn E. published the artcileAroyl Isocyanates as 1,4-Dipoles in a Formal [4 + 1]-Cycloaddition Approach toward Oxazolone Construction, Application of 2,4-Dichlorobenzamide, the publication is Organic Letters (2018), 20(8), 2315-2319, database is CAplus and MEDLINE.

A formal phosphine-mediated [4 + 1]-cycloaddition between a 1,2-dicarbonyl and an aroyl isocyanate to provide oxazolones I (Ar¹ = Ph, 4-MeOC₆H₄, 4-BrC₆H₄, etc.; Ar² = Ph, 4-FC₆H₄, etc.) bearing a disubstituted C5 center is described. By exploiting the carbene-like reactivity of oxyphosphonium enolates as C1 synthons and aroyl isocyanates as formal 1,4-dipoles, oxazolones and spiroooxindole oxazolones II (Ar¹ = Ph, 4-MeOC₆H₄, 4-BrC₆H₄; R¹ = H, 5-Me, 5-Br, etc.; R² = Me, Ac, Boc, Bn, etc.) are constructed in high yields (39-99%).

Organic Letters published new progress about 2447-79-2. 2447-79-2 belongs to amides-buliding-blocks, auxiliary class Chloride,Amine,Benzene,Amide, name is 2,4-Dichlorobenzamide, and the molecular formula is C7H5Cl2NO, Application of 2,4-Dichlorobenzamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Suzuki, Toru published the artcileSwitchable genome editing via genetic code expansion, Safety of H-Lys(Boc)-OH, the publication is Scientific Reports (2018), 8(1), 1-12, database is CAplus and MEDLINE.

Multiple applications of genome editing by CRISPR-Cas9 necessitate stringent regulation and Cas9 variants have accordingly been generated whose activity responds to small ligands, temperature or light. However, these approaches are often impracticable, for example in clin. therapeutic genome editing in situ or gene drives in which environmentally-compatible control is paramount. With this in mind, we have developed heritable Cas9-mediated mammalian genome editing that is acutely controlled by the cheap lysine derivative, Lys(Boc) (BOC). Genetic code expansion permitted non-physiol. BOC incorporation such that Cas9 (Cas9^BOC) was expressed in a full-length, active form in cultured somatic cells only after BOC exposure. Stringently BOC-dependent, heritable editing of transgenic and native genomic loci occurred when Cas9^BOC was expressed at the onset of mouse embryonic development from cRNA or Cas9^BOC transgenic females. The tightly controlled Cas9 editing system reported here promises to have broad applications and is a first step towards purposed, spatiotemporal gene drive regulation over large geog. ranges.

Scientific Reports published new progress about 2418-95-3. 2418-95-3 belongs to amides-buliding-blocks, auxiliary class Chiral,Carboxylic acid,Amine,Aliphatic hydrocarbon chain,Ester,Amino acide derivatives, name is H-Lys(Boc)-OH, and the molecular formula is C9H10O3S, Safety of H-Lys(Boc)-OH.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Deuss, Peter J. published the artcileParallel synthesis and splicing redirection activity of cell-penetrating peptide conjugate libraries of a PNA cargo, HPLC of Formula: 186046-83-3, the publication is Organic & Biomolecular Chemistry (2013), 11(43), 7621-7630, database is CAplus and MEDLINE.

A novel method for the parallel synthesis of peptide-biocargo conjugates was developed that utilizes affinity purification for fast isolation of the conjugates in order to avoid time consuming HPLC purification The methodol. was applied to create two libraries of cell-penetrating peptide (CPP)-PNA705 conjugates from parallel-synthesized peptide libraries. The conjugates were tested for their ability to induce splicing redirection in HeLa pLuc705 cells. The results demonstrate how the novel methodol. can be applied for screening purposes in order to find suitable CPP-biocargo combinations and further optimization of CPPs.

Organic & Biomolecular Chemistry published new progress about 186046-83-3. 186046-83-3 belongs to amides-buliding-blocks, auxiliary class Purine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(2-(((benzhydryloxy)carbonyl)amino)-6-oxo-5H-purin-9(6H)-yl)acetamido)acetic acid, and the molecular formula is C40H35N7O8, HPLC of Formula: 186046-83-3.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Saleh, Amer F. published the artcileSynthesis and Splice-Redirecting Activity of Branched, Arginine-Rich Peptide Dendrimer Conjugates of Peptide Nucleic Acid Oligonucleotides, Synthetic Route of 186046-83-3, the publication is Bioconjugate Chemistry (2010), 21(10), 1902-1911, database is CAplus and MEDLINE.

Arginine-rich cell-penetrating peptides have found excellent utility in cell and in vivo models for enhancement of delivery of attached charge-neutral PNA or PMO oligonucleotides. The authors report the synthesis of dendrimeric peptides containing 2- or 4-branched arms each having one or more R-Ahx-R (R = Arg; Ahx = aminohexanoic acid) motifs and their disulfide conjugation to a PNA705 splice-redirecting oligonucleotide. Conjugates were assayed in a HeLa pLuc705 cell assay for luciferase up-regulation and splicing redirection. Whereas 8-Arg branched peptide-PNA conjugates showed poor activity compared to a linear (R-Ahx-R)₄-PNA conjugate, 2-branched and some 4-branched 12 and 16 Arg peptide-PNA conjugates showed activity similar to that of the corresponding linear peptide-PNA conjugates. Many of the 12- and 16-Arg conjugates retained significant activity in the presence of serum. Evidence showed that biol. activity in HeLa pLuc705 cells of the PNA conjugates of branched and linear (R-Ahx-R) peptides is associated with an energy-dependent uptake pathway, predominantly clathrin-dependent, but also with some caveolae dependence.

Bioconjugate Chemistry published new progress about 186046-83-3. 186046-83-3 belongs to amides-buliding-blocks, auxiliary class Purine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(2-(((benzhydryloxy)carbonyl)amino)-6-oxo-5H-purin-9(6H)-yl)acetamido)acetic acid, and the molecular formula is C40H35N7O8, Synthetic Route of 186046-83-3.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Ban, Jozef published the artcileSuppression of Deacetylase SIRT1 Mediates Tumor-Suppressive NOTCH Response and Offers a Novel Treatment Option in Metastatic Ewing Sarcoma, Recommanded Product: 4-(tert-Butyl)-N-((4-(5-(dimethylamino)pentanamido)phenyl)carbamothioyl)benzamide, the publication is Cancer Research (2014), 74(22), 6578-6588, database is CAplus and MEDLINE.

These findings offer a mechanistic rationale for the use of pharmacol. inhibitors of a p53 deacetylase to treat cancers in which NOTCH acts a tumor suppressor. The developmental receptor NOTCH plays an important role in various human cancers as a consequence of oncogenic mutations. Here we describe a novel mechanism of NOTCH-induced tumor suppression involving modulation of the deacetylase SIRT1, providing a rationale for the use of SIRT1 inhibitors to treat cancers where this mechanism is inactivated because of SIRT1 overexpression. In Ewing sarcoma cells, NOTCH signaling is abrogated by the driver oncogene EWS-FLI1. Restoration of NOTCH signaling caused growth arrest due to activation of the NOTCH effector HEY1, directly suppressing SIRT1 and thereby activating p53. This mechanism of tumor suppression was validated in Ewing sarcoma cells, B-cell tumors, and human keratinocytes where NOTCH dysregulation has been implicated pathogenically. Notably, the SIRT1/2 inhibitor Tenovin-6 killed Ewing sarcoma cells in vitro and prohibited tumor growth and spread in an established xenograft model in zebrafish. Using immunohistochem. to analyze primary tissue specimens, we found that high SIRT1 expression was associated with Ewing sarcoma metastasis and poor prognosis. Our findings suggest a mechanistic rationale for the use of SIRT1 inhibitors being developed to treat metastatic disease in patients with Ewing sarcoma. Cancer Res; 74(22); 6578-88. ©2014 AACR.

Cancer Research published new progress about 1011557-82-6. 1011557-82-6 belongs to amides-buliding-blocks, auxiliary class Epigenetics,Sirtuin, name is 4-(tert-Butyl)-N-((4-(5-(dimethylamino)pentanamido)phenyl)carbamothioyl)benzamide, and the molecular formula is C25H34N4O2S, Recommanded Product: 4-(tert-Butyl)-N-((4-(5-(dimethylamino)pentanamido)phenyl)carbamothioyl)benzamide.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics

Venkappayya, D. published the artcile“4-Morpholinyl-(thiocarbonic) acid amide” [thio-4-morpholinecarboxamide], Application In Synthesis of 14294-10-1, the publication is Current Science (1969), 38(7), 155-6, database is CAplus.

The procedure of Henry and Dehn (1950) for the reaction of morpholine HCl salt and KSCN was repeated and gave a compound m. 112.5-15.5°, as previously reported. However, aqueous solutions of this compound gave an intense red color with acidic ferric ion solutions, and ion exchange confirmed the presence of morpholinium and thiocyanate ions. The ir spectrum of the solid compound showed bands characteristic of C-N and C-S stretching modes in ionic thiocyanates. On the basis of these experiments, the compound was thought to be morpholinium thiocyanate rather than thio-4-morpholinecar-boxamide.

Current Science published new progress about 14294-10-1. 14294-10-1 belongs to amides-buliding-blocks, auxiliary class Morpholine,Thiourea,Amine,Amide, name is Morpholine-4-carbothioamide, and the molecular formula is C20H19NO4, Application In Synthesis of 14294-10-1.

Referemce:
https://en.wikipedia.org/wiki/Amide,
Amide – an overview | ScienceDirect Topics