- A Short, Scalable Synthesis of the Carbocyclic Core of the Anti-Angiogenic Cortistatins from (+)-Estrone by B-Ring Expansion.
[作者:Kurti, Laszlo;Czako, Barbara;Corey, E. J.;,期刊:Organic Letters, 页码:5247-5250 , 文章类型: 研究论文,,卷期:2008年10-22]
- A rapid and scalable synthesis of the carbocyclic core of the potent antiangiogenic natural products, the cortistatins, is presented starting from readily available (+)-estrone. Key steps include a regio- and stereosele...
- Total Synthesis of (?-Lysergic Acid, Lysergol, and Isolysergol by Palladium-Catalyzed Domino Cyclization of Amino Allenes Bearing a Bromoindolyl Group.
[作者:Inuki, Shinsuke;Oishi, Shinya;Fujii, Nobutaka;Ohno, Hiroaki;,期刊:Organic Letters, 页码:5239-5242 , 文章类型: 研究论文,,卷期:2008年10-22]
- ergot alkaloids based on palladium-catalyzed domino cyclization of amino allenes was investigated. With this bis-cyclization as the key step, total synthesis of (?-lysergic acid I (R8a = H, R8b = CO2H), (?-lysergol I (R...
- Air-Stable and Phosphine-Free Iridium Catalysts for Highly Enantioselective Hydrogenation of Quinoline Derivatives.
[作者:Li, Zhi-Wei;Wang, Tian-Li;He, Yan-Mei;Wang, Zhi-Jian;Fan, Qing-Hua;Pan, Jie;Xu, Li-Jin;,期刊:Organic Letters, 页码:5265-5268 , 文章类型: 研究论文,,卷期:2008年10-22]
- Enantioselective hydrogenation of quinoline derivs. catalyzed by phosphine-free chiral cationic Cp*Ir(OTf)(CF3TsDPEN) complex (CF3TsDPEN = N-(p-trifluoromethylbenzenesulfonyl)-1,2-diphenylethylene-diamine) afforded the 1...
- Syntheses of Substituted 3-Methyleneisoindolin-1-ones By a Palladium-Catalyzed Sonogashira Coupling-Carbonylation-Hydroamination Sequence in Phosphonium Salt-Based Ionic liquids.
[作者:Cao, Hong;McNamee, Laura;Alper, Howard;,期刊:Organic Letters, 页码:5281-5284 , 文章类型: 研究论文,,卷期:2008年10-22]
- carbonylation-hydroamination reaction of 1-halo-2-alkynylbenzene with amines afforded the substituted 3-methyleneisoindolin-1-ones, e.g., I, in good yields and high selectivities in favor of the Z-isomers. The target mo...
- Synthesis of the 1,5-Polyol System Based on Cross Metathesis: Structure Revision of Amphidinol 3.
[作者:Oishi, Tohru;Kanemoto, Mitsunori;Swasono, Respati;Matsumori, Nobuaki;Murata, Michio;,期刊:Organic Letters, 页码:5203-5206 , 文章类型: 研究论文,,卷期:2008年10-22]
- Synthesis of a 1,5-polyol system corresponding to the C1-C14 unit of amphidinol 3 (AM3) and its diastereomers was achieved via chemoselective cross metathesis as the key step. Comparison of 13C NMR data of the synthetic...
- Resin-Immobilized CuO and Cu Nanocomposites for Alcohol Oxidation.
[作者:Pande, Surojit;Saha, Arindam;Jana, Subhra;Sarkar, Sougata;Basu, Mrinmoyee;Pradhan, Mukul;Sinha, Arun Kumar;Saha, Sandip;Pal, Anjali;Pal, Tarasankar;,期刊:Organic Letters, 页码:5179-5181 , 文章类型: 研究论文,,卷期:2008年10-22]
- Resin immobilized stable, spherical CuO nanoparticles prepd. in the presence of cyclodextrin (CD) act as catalysts for liq. phase alc. oxidn. in air. The catalytic activity of the CuO nanocomposites and its green chem. ...
- Highly Enantioselective Aza-Henry Reaction of Ketoimines Catalyzed by Chiral N,N'-Dioxide-Copper(I) Complexes.
[作者:Tan, Cheng;Liu, Xiaohua;Wang, Liwei;Wang, Jun;Feng, Xiaoming;,期刊:Organic Letters, 页码:5305-5308 , 文章类型: 研究论文,,卷期:2008年10-22]
- The first example of catalytic enantioselective aza-Henry reaction of ketoimines has been realized using a simple chiral N,N'-dioxide-Cu(I) complex as catalyst. It performs well over a range of substrates to give the co...
- Diversity-Oriented Synthesis of Fused Pyran g-Lactones via an Efficient Pd-Thiourea-Catalyzed Alkoxycarbonylative Annulation.
[作者:Li, Zhengtao;Gao, Yingxiang;Jiao, Zhaodong;Wu, Na;Wang, David Zhigang;Yang, Zhen;,期刊:Organic Letters, 页码:5163-5166 , 文章类型: 研究论文,,卷期:2008年10-22]
- We report herein a diversity-oriented synthesis of a range of fused pyran-g-lactones, e.g., I, that was effected through a versatile Pd-thiourea complex-catalyzed intramol. alkoxycarbonylative annulation of ene-diols, e....
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