- Domino Double Michael-Claisen Cyclizations: A Powerful General Tool for Introducing Quaternary Stereocenters at C(4) of Cyclohexane-1,3-diones and Total Synthesis of Diverse Families of Sterically Congested Alkaloids.
[作者:Ishikawa, Teruhiko;Kudo, Kazuhiro;Kuroyabu, Ken;Uchida, Satoshi;Kudoh, Takayuki;Saito, Seiki;,期刊:Journal of Organic Chemistry, 页码:7498-7508 , 文章类型: 研究论文,,卷期:2008年73-19]
- Reactions of substituted acetone derivs., RCH2COMe (R = Me, Et, allyl, PhCH2, etc.), with acrylic acid esters, e.g. H2C:CHCO2CMe3, (>200 mol %) in the presence of t-BuOK (200 mol %) in t-BuOH-THF (1:1 by vol.) turned out...
- Diastereoselective Synthesis of Allosecurinine and Viroallosecurinine from Menisdaurilide.
[作者:Bardaji, Gisela G.;Canto, Mariona;Alibes, Ramon;Bayon, Pau;Busque, Felix;de March, Pedro;Figueredo, Marta;Font, Josep;,期刊:Journal of Organic Chemistry, 页码:7657-7662 , 文章类型: 研究论文,,卷期:2008年73-19]
- A new and versatile synthetic route to Securinega alkaloids is reported. The first synthesis of allosecurinine (I) has been accomplished in seven steps and 40% yield, starting from (+)-menisdaurilide, using a vinylogous ...
- Structural and Spatial Considerations in the N,N'-Diacyl- and Bis(alkoxycarbonyl)bispidinone Series.
[作者:Levinger, Shlomo;Sharabi-Ronen, Yifat;Mainfeld, Alexander;Albeck, Amnon;,期刊:Journal of Organic Chemistry, 页码:7793-7796 , 文章类型: 研究论文,,卷期:2008年73-19]
- Diamidic and dicarbamic bispidinones show trans-cis isomerism, the relative population in soln. of the cis form increasing with solvent polarity. The mutual proximity of the two amide functions in I (R = Ph, R' = Ac)4a ...
- Photolabile Protection of Alcohols, Phenols, and Carboxylic Acids with 3-Hydroxy-2-Naphthalenemethanol.
[作者:Kulikov, Anton;Arumugam, Selvanathan;Popik, Vladimir V.;,期刊:Journal of Organic Chemistry, 页码:7611-7615 , 文章类型: 研究论文,,卷期:2008年73-19]
- Irradn. of alcs., phenols, and carboxylic acids "caged" with the release of the substrates with good quantum (F = 0.17-0.26) and chem. (>90%) yields. The initial byproduct of the photoreaction, 2-naphthoquinone-3-methid...
- Intramolecular 1,8-Hydrogen Atom Transfer. Stereoselectivity of the Hexopyranos-5'-yl Radical Reactions in Hexp-(1?)-Hexp Disaccharide Systems.
[作者:Martin, Angeles;Perez-Martin, Ines;Quintanal, Luis M.;Suarez, Ernesto;,期刊:Journal of Organic Chemistry, 页码:7710-7720 , 文章类型: 研究论文,,卷期:2008年73-19]
- The stereoselective redn. of hexopyranos-5'-yl radicals in a-D-Hexp-(1?)-D-Hexp disaccharide models is described. These radicals are generated from a 6-O-yl radical located in the other monosaccharic unit through a 1,8-...
- First Total Synthesis of (+)-Varitriol.
[作者:Kumar, Vikas;Shaw, Arun K.;,期刊:Journal of Organic Chemistry, 页码:7526-7531 , 文章类型: 研究论文,,卷期:2008年73-19]
- A highly stereoselective total synthesis of (+)-varitriol, an antitumor natural product, has been achieved for the first time from com. available Me a,D-mannopyranoside and 2,6-dihydroxybenzoic acid.
- Structure and Total Synthesis of (-)-Myrionidine and (-)-Schoberine, Antimalarial Alkaloids from Myrioneuron nutans.
[作者:Pham, Van Cuong;Jossang, Akino;Grellier, Philippe;Sevenet, Thierry;Nguyen, Van Hung;Bodo, Bernard;,期刊:Journal of Organic Chemistry, 页码:7565-7573 , 文章类型: 研究论文,,卷期:2008年73-19]
- (5S,9S,10R,13S)-myrionamide II, along with the known schoberine (III), were isolated from the leaves of Myrioneuron nutans (Rubiaceae), and their structures were detd. from spectral anal., including mass spectrometry and...
- Organolithium-Mediated Conversion of b-Alkoxy Aziridines into Allylic Sulfonamides: Effect of the N-Sulfonyl Group and a Formal Synthesis of (?-Perhydrohistrionicotoxin.
[作者:Coote, Susannah C.;Moore, Stephen P.;O'Brien, Peter;Whitwood, Adrian C.;Gilday, John;,期刊:Journal of Organic Chemistry, 页码:7852-7855 , 文章类型: 研究论文,,卷期:2008年73-19]
- In 18 out of 20 examples of the organolithium-mediated conversion of b-alkoxy aziridines into substituted allylic sulfonamides, use of a Bus (Bus = t-BuSO2) substituent on the nitrogen gave higher yields compared to the ...
- Short, Stereoselective Synthesis of the Naturally Occurring Pyrrolidine Radicamine B and a Formal Synthesis of Nectrisine.
[作者:Ribes, Celia;Falomir, Eva;Carda, Miguel;Marco, J. Alberto;,期刊:Journal of Organic Chemistry, 页码:7779-7782 , 文章类型: 研究论文,,卷期:2008年73-19]
- A short, stereoselective synthesis of the naturally occurring pyrrolidine radicamine B (I) is reported. Garner's (R)-aldehyde, prepd. from D-serine, was the chiral starting material. The pyrrolidine ring was stereosele...
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