129266-47-3Relevant academic research and scientific papers
Enantioselective allylic hydroxylation of w-alkenoic acids and esters by P450 BM3 monooxygenase
Neufeld, Katharina,Henssen, Birgit,Pietruszka, J?rg
, p. 13253 - 13257 (2014)
Chiral allylic alcohols of w-alkenoic acids and derivatives thereof are highly important building blocks for the synthesis of biologically active compounds. The direct enantioselective C-H oxidation of linear terminal olefins offers the shortest route toward these compounds, but known synthetic methods are limited and suffer from low selectivities. Described herein is an enzymatic approach using the P450 BM3 monooxygenase mutant A74G/L188Q, which catalyzes allylic hydroxylation with high to excellent chemo- and enantioselectivities providing the desirable secondary alcohols.
Olefination via Cu-Mediated Dehydroacylation of Unstrained Ketones
Dong, Guangbin,Xu, Yan,Zhou, Xukai
supporting information, p. 20042 - 20048 (2021/12/03)
The dehydroacylation of ketones to olefins is realized under mild conditions, which exhibits a unique reaction pathway involving aromatization-driven C-C cleavage to remove the acyl moiety, followed by Cu-mediated oxidative elimination to form an alkene between the α and β carbons. The newly adopted N′-methylpicolinohydrazonamide (MPHA) reagent is key to enable efficient cleavage of ketone C-C bonds at room temperature. Diverse alkyl- and aryl-substituted olefins, dienes, and special alkenes are generated with broad functional group tolerance. Strategic applications of this method are also demonstrated.
Allylation of aldehydes by dual photoredox and nickel catalysis
Gualandi, Andrea,Rodeghiero, Giacomo,Faraone, Adriana,Patuzzo, Filippo,Marchini, Marianna,Calogero, Francesco,Perciaccante, Rossana,Jansen, Thomas Paul,Ceroni, Paola,Cozzi, Pier Giorgio
supporting information, p. 6838 - 6841 (2019/06/18)
Here we report the application of dual nickel/photoredox catalysis to the allylation of aliphatic, aromatic and heteroaromatic aldehydes by using commercially available reagents. The process utilizes the combination of a Ni(ii) complex, [Ru(bpy)3]2+ as a photoredox catalyst, and allylacetate under blue LED irradiation, and allows the synthesis of a large variety of homoallylic alcohols.
Nickel-Catalyzed Barton Decarboxylation and Giese Reactions: A Practical Take on Classic Transforms
Qin, Tian,Malins, Lara R.,Edwards, Jacob T.,Merchant, Rohan R.,Novak, Alexander J. E.,Zhong, Jacob Z.,Mills, Riley B.,Yan, Ming,Yuan, Changxia,Eastgate, Martin D.,Baran, Phil S.
supporting information, p. 260 - 265 (2016/12/30)
Two named reactions of fundamental importance and paramount utility in organic synthesis have been reinvestigated, the Barton decarboxylation and Giese radical conjugate addition. N-hydroxyphthalimide (NHPI) based redox-active esters were found to be conv
Catalyst-Controlled Diastereoselective Synthesis of Cyclic Amines via C-H Functionalization
Munnuri, Sailu,Adebesin, Adeniyi Michael,Paudyal, Mahesh P.,Yousufuddin, Muhammed,Dalipe, Alfonso,Falck, John R.
supporting information, p. 18288 - 18294 (2017/12/27)
Reliable regio- and stereochemical techniques applicable to nonactivated aliphatic systems remain largely elusive due to the challenges of discriminating between multiple, relatively strong sp3 C-H bonds whose chemical behavior often differ onl
Targeting the heat shock protein 90 dimer with dimeric inhibitors
Kusuma, Bhaskar Reddy,Peterson, Laura B.,Zhao, Huiping,Vielhauer, George,Holzbeierlein, Jeffrey,Blagg, Brian S. J.
experimental part, p. 6234 - 6253 (2011/10/31)
The design, synthesis, and biological evaluation of conformationally constrained coumermycin A1 analogues are reported. Compounds were evaluated against both breast cancer (SKBr3 and MCF7) and prostate cancer (PC3 mm2, A549, and HT29) cell lines. Non-noviosylated coumermycin A1 analogues that manifest potent antiproliferative activity resulting from Hsp90 inhibition are provided, wherein replacement of the stereochemically complex noviose sugar with readily available piperidine rings resulted in ü100 fold increase in antiproliferative activities as compared to coumermycin A1, producing small molecule Hsp90 inhibitors that exhibit nanomolar activities.
PREPARATION OF ALKENES BY MILD THERMOLYSIS OF SULFOXIDES
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Page/Page column 5, (2010/07/02)
Embodiments of this disclosure, among others, encompass methods for generating alkenes under mild thermolytic conditions that can provide almost total conversion of a precursor compound to an alkene without isomerization or the need to chromatographically purify the final product By selectively blocking the amino and carboxy groups of the depvatized amino acid, the methods of the disclosure provide for the synthesis of a peptide having the vinylglycine moiety at either the carboxy or the amino terminus of the peptide The mild conditions for the thermolytic removal of an o-NO2-phenyl substituted aryl group ensure that there is minimal if any damage to thermally sensitive conjugates such as a peptide bearing the vinylglycine The methods of the present disclosure have practical applications for the preparation of unsaturated compounds under mild, thermolytic conditions.
IMMUNOMODULATORY COMPOUNDS AND TREATMENT OF DISEASES RELATED TO AN OVERPRODUCTION OF INFLAMMATORY CYTOKINES
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, (2009/07/02)
Method of using immunomodulatory compounds for treating diseases related to an overproduction of inflammatory cytokines, including diseases selected from asthma, atopic dermatitis, allergic rhinitis, prostatitis, inflammatory bowel disease, diabetes, and rhumatoid arthritis, the compounds being of general formula (I): wherein: m and n, independently from each other, are an integer ranging from 1 to 4,X and Y represent —COOH, —O—P(O)(OH)2, —O—SO2(OH), —NH2, —OH, —CONH(CH2)n1—NH2, —CO—NH—CH(COOH)—(CH2)n1—COOH, —CO—NH—CH(COOH)—(CH2)n1—NH2, —O—CO—(CH2)n1—NH2, —O—CO—(CH2)n1—CHOH—CH2OH, —O—CO—(CH2)n1—OH, O—CO—(CH2)n1—COOH, —O—CO—(CH2)n1—CHO, —O—CO—(CH2)n1—NH—CO—(CH2)n2—COOH,R1 and R2 each designate an acyl group derived from a saturated or unsaturated, straight- or branched-chain carboxylic acid having from 2 to 18 carbon atoms, which is unsubstituted or bears one to three substituents selected among hydroxyl, dihydroxyphosphoryloxy, alkyl of 2 to 10 carbon atoms, alkoxy of 2 to 10 carbon atoms, acyloxy of 2 to 18 carbon atoms in the acyl moiety, amino, acylamino.
Partial hydrogenation of alkynes to cis-olefins by using a novel Pd 0-polyethyleneimine catalyst
Sajiki, Hironao,Mori, Shigeki,Ohkubo, Tomoyuki,Ikawa, Takashi,Kume, Akira,Maegawa, Tomohiro,Monguchi, Yasunari
supporting information; experimental part, p. 5109 - 5111 (2009/05/07)
The creation and application of a new Pd0-polyethyleneimine complex catalyst (Pd0-PEI) was investigated. The 55 Pd 0-PEI catalyst was prepared by introduction of Pd(OAc)2 directly in the MeOH solution of deaerated PEI under Ar atmosphere. Reactions were carried out using 10 weight % versus substrate of 5% Pd0-PEI in 2mL solvent under H2 atmosphere at room temperature. The generality of the process was shown by disubstituting alkynes. Even for the substrate bearing a conjugated ketone on the alkyne, the serious over-reduction was not observed while significant cistrans isomerization of methyl styryl ketone accompanied the partial hydrogenation on the basis of keto-enol tautomerism. Pd0-PEI catalyst is also applicable to the partial hydrogenation of monosubstituted alkynes to monosubstituted olefins.
