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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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Advances in Alkene Metathesis: The Hoveyda Synthesis of (+)-Quebrachamine

Chemexpress June 1, 2024 0 Comments

There are two major impediments to the scaling up of alkene metathesis, reducing the amount of the expensive Ru catalyst required, and minimizing residual Ru in the product. Robert H.…

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Alkaloid Synthesis: (S)-Nicotine (Helmchen), (+)-CP-99,994 (Shi),

Chemexpress June 1, 2024 0 Comments

(-)-Adaline (Yu), (-)-Securinine (Bayón/Figueredo), Alkaloid 223A (Aubé), (-)-Huperzine A (Fukuyama) The recent development of practical methods for the asymmetric preparation of amines has enabled creative approaches to alkaloid construction. Cyclopropylmethyl…

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Strictly consecutive and SA-regulated manner around the SA sensor protein NPR

Chemexpress May 31, 2024 0 Comments

Strictly consecutive and SA-regulated manner on the SA sensor protein NPR1, enabling NPR1 to monitor progressing threat by pathogens and to market appropriate defense gene activation at distinct stages of…

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D on a typical haplotype, probably from a popular AJ founder.

Chemexpress May 31, 2024 0 Comments

D on a frequent haplotype, probably from a frequent AJ founder. Notably, the variant is just not observed inside the publically readily available information on approximately 9,000 folks (ESP 6500…

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Metal-Mediated Carbocyclic Construction: The Kobayashi Synthesis of (+)-Fomitellic Acid B

Chemexpress May 31, 2024 0 Comments

Jin K. Cha of Wayne State University described (J. Org. Chem. 2009, 74, 5528. DOI: 10.1021/jo900823h) the diastereoselective intramolecular cyclopropanation of nitriles with homoallylic alcohols such as 1. Valery V.…

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Functional Group Protection

Chemexpress May 31, 2024 0 Comments

Bekington Myrboh of North-Eastern Hill University reported (Tetrahedron Lett. 2010, 51, 2862. DOI: 10.1016/j.tetlet.2010.03.084) a convenient procedure for the oxidative removal of a 1,3-oxathiolane 1 or a 1,3-dithiolane. Sang-Gyeong Lee…

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From 2.5 nM to 25 uM. As 1 DMSO considerably inhibited development of U-CH

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Of PABPC localization and vhs in the course of lytic EBV infectionThis report describes

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Ive weeks (equivalent for the rats fed a high-fat diet for

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That probably rely on neuron form, the nearby environment plus the

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