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Construction of Arrays of Stereogenic Centers: The Zhang Synthesis of (+)-Podophyllotoxin

Chemexpress June 2, 2024 0 Comments

Varinder K. Aggarwal of the University of Bristol showed(Angew. Chem. Int. Ed. 2009, 48, 1149.DOI: 10.1002/anie.200805272)that condensation of a boronic ester 2 with a metalatedaziridine 1 led, after oxidation, to…

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Enantioselective C-C Bond Construction: Part Two of Two

Chemexpress June 2, 2024 0 Comments

Enantioselective target-directed synthesis, which is important both for single-enantiomer pharmaceuticals and for natural product total synthesis, depends on the ability to form carbon-carbon bonds with absolute stereocontrol. Ethyl 4-methyl-1H-pyrrole-2-carboxylate Formula…

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Benzene Derivatives: The Tanino-Miyashita Synthesis of Zoanthenol

Chemexpress June 2, 2024 0 Comments

Yuqing Hou of Southern Illinois University found (J. Org. Chem. PMID:24187611 2009, 74, 6362. DOI: 10.1021/jo901086s) that the peroxy ether 2 served effectively to directly transfer a methoxy group to…

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E (FITC), anti B7-H1 mAb (eBioscience, Minneapolis, MN), and anti-mouse

Chemexpress June 1, 2024 0 Comments

E (FITC), anti B7-H1 mAb (eBioscience, Minneapolis, MN), and anti-mouse immunoglobulin conjugated with FITC (Dako Denmark A/S, Glostrup, Denmark). Detection of surface CD80 and CD86 was carried out employing unconjugated…

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Ges in eCB receptors, enzymes or transporters. Anti-depressant drugs had unique

Chemexpress June 1, 2024 0 Comments

Ges in eCB receptors, enzymes or transporters. Anti-depressant drugs had distinct effects in other brain regions. Within the frontal cortex, chronic administration of NAC elevated AEA levels, whilst 2-AG levels…

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Functional Group Protection: The Kraus Synthesis of Bauhinoxepin J

Chemexpress June 1, 2024 0 Comments

Amos B. Smith III of the University of Pennsylvania found (Synlett 2009, 3131. DOI: 10.1055/s-0029-1218352) that the advanced SAMP intermediate 1 could be deprotected to 2 without racemization under mild…

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Transition-Metal Catalyzed Ring Construction: The Yu Synthesis of

Chemexpress June 1, 2024 0 Comments

α-Agorafuran Valery V. Fokin of Scripps/La Jolla extended (J. Am. Chem. Soc. 1279894-35-7 Purity 2010, 132, 2510. DOI: 10.1021/ja910187s) enantioselective Rh-mediated intermolecular cyclopropanation to α-olefins such as 1. Takahiro Nishimura…

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Enantioselective Preparation of Alcohols and Amines

Chemexpress June 1, 2024 0 Comments

Renat Kadyrov of Evonik Degussa and Magnus Rueping of RWTH Aachen developed (Angew. Chem. Int. Ed. 2009, 49, 7556. DOI: 10.1002/anie.200902835) an effective catalyst for the enantioselective hydrogenation of an…

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Stereoselective C-O Ring Construction: The Jamison Synthesis of (-)-Gloeosporone

Chemexpress June 1, 2024 0 Comments

Arene diazonium salts are effective precursors for the Heck reaction. Sandro Cacchi of the Università degli Studi “La Sapienza”, Roma, observed(Synlett 2009, 1277.DOI: 10.1055/s-0028-1088132)that the diazonium salt generated in situ…

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Substituted Benzenes: The Saikawa/Nakata Synthesis of Kendomycin

Chemexpress June 1, 2024 0 Comments

Jianbo Wang of Peking University described (Angew. Chem. Int. Ed. 2010, 49, 2028. DOI: 10.1002/anie.200906699) the Au-promoted bromination of a benzene derivative such as 1 with N-bromosuccinimide. In a one-pot…

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2-Decyn-1-ol (CAS 4117-14-0)

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2-cyano-N,N-dimethylbenzenesulfonamide

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1-(2-Ethoxy-phenyl)-piperazine dihydrochloride (CAS 164009-65-8)

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2-Chlorophenyl Acetate (CAS 4525-75-1)

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