- 2-Arylhydroxytyrosol Derivatives via Suzuki-Miyaura Cross-Coupling.
[作者:Bernini, Roberta;Cacchi, Sandro;Fabrizi, Giancarlo;Filisti, Eleonora;,期刊:Organic Letters, 页码:3457-3460 , 文章类型: 研究论文,,卷期:2008年10-16]
- 2-Arylhydroxytyrosol derivs., a new class of hydroxytyrosol derivs., have been prepd. in high to excellent yields from the corresponding 2-chloro precursors via Suzuki-Miyaura cross-coupling with arylboronic acids contg....
- A Highly Stereoselective Synthesis of Chiral a-Amino-b-lactams via the Kinugasa Reaction Employing Ynamides.
[作者:Zhang, Xuejun;Hsung, Richard P.;Li, Hongyan;Zhang, Yu;Johnson, Whitney L.;Figueroa, Ruth;,期刊:Organic Letters, 页码:3477-3479 , 文章类型: 研究论文,,卷期:2008年10-16]
- A highly stereoselective synthesis of chiral a-amino-b-lactams through an ynamide-Kinugasa reaction is described. For example, reacting ynamide I with N-phenyl-a-phenylnitrone gave b-lactam II in 80% yield favoring the ...
- Highly Direct a-Selective Glycosylations of 3,4-O-Carbonate-Protected 2-Deoxy- and 2,6-Dideoxythioglycosides by Preactivation Protocol.
[作者:Lu, Yin-Suo;Li, Qin;Zhang, Li-He;Ye, Xin-Shan;,期刊:Organic Letters, 页码:3445-3448 , 文章类型: 研究论文,,卷期:2008年10-16]
- A new efficient pre-activation method for the highly a-stereoselective glycosylation of 2-deoxysugars and 2,6-dideoxysugars has been developed using 2-deoxy- and 2,6-dideoxythioglycosides as glycosyl donors. The approac...
- Expedient synthesis of pyrrolo[1,2-a]indoles: preparation of the core of yuremamine.
[作者:Johansen, Michael B.;Kerr, Michael A.;,期刊:Organic Letters, 页码:3497-3500 , 文章类型: 研究论文,,卷期:2008年10-16]
- tetrahydro-1,2-oxazines, which in turn are generated through the reaction of nitrones with 1,1-cyclopropanediesters. The synthetic route proves to be highly diastereoselective and provides access to the core I of the re...
- Catalytic Enantioselective Intermolecular Cycloaddition of 2-Diazo-3,6-diketoester-Derived Carbonyl Ylides with Alkynes and Styrenes Using Chiral Dirhodium(II) Carboxylates.
[作者:Shimada, Naoyuki;Anada, Masahiro;Nakamura, Seiichi;Nambu, Hisanori;Tsutsui, Hideyuki;Hashimoto, Shunichi;,期刊:Organic Letters, 页码:3603-3606 , 文章类型: 研究论文,,卷期:2008年10-16]
- Dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate], Rh2(S-TCPTTL)4, is an exceptionally effective catalyst for enantioselective tandem carbonyl ylide formation-cycloaddn. reactions of 2-diazo-3,6-diketoest...
- New MCR-Heck-Isomerization Cascade toward Indoles.
[作者:El Kaim, Laurent;Gizzi, Marion;Grimaud, Laurence;,期刊:Organic Letters, 页码:3417-3419 , 文章类型: 研究论文,,卷期:2008年10-16]
- The use of ortho-iodonitrophenol in Ugi-Smiles reaction to afford adducts such as I, coupled with Heck cyclization gives new access to indole scaffolds, e.g., II. The sequence can be performed in a one-pot reaction if t...
- A New Case of Induced Helical Chirality in a Bichromophoric System: Absolute Configuration of Transparent and Flexible Diols from the Analysis of the Electronic Circular Dichroism Spectra of the Corresponding Di(1-naphthyl)ketals.
[作者:Tartaglia, Sabina;Pace, Francesca;Scafato, Patrizia;Rosini, Carlo;,期刊:Organic Letters, 页码:3421-3424 , 文章类型: 研究论文,,卷期:2008年10-16]
- Di(1-naphthyl)ketals of 1,n-diols show couplet effects allied to the 1B naphthalene transition in their CD spectra. This means that they assume a conformation with a prevailing sense of twist of the naphthalene rings, i...
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