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文章名     作者     期刊名     摘要     卷     期         如果没有找到您所需要的文献，请点击 ——此处申请     共57条记录   Codinaeopsin, an antimalarial fungal polyketide. [作者：Kontnik, Renee;Clardy, Jon;,期刊：Organic Letters, 页码：4149-4151 , 文章类型： 研究论文，,卷期：2008年10-18] A new tryptophan-polyketide hybrid, codinaeopsin, was isolated from an endophytic fungus collected in Costa Rica. The structure of codinaeopsin, which was deduced from NMR and mass spectral data, contains an unusual het... Design of a Fluorescent Dye for Indicator Displacement from Cucurbiturils: A Macrocycle-Responsive Fluorescent Switch Operating through a pKa Shift. [作者：Praetorius, Antonia;Bailey, David M.;Schwarzlose, Thomas;Nau, Werner M.;,期刊：Organic Letters, 页码：4089-4092 , 文章类型： 研究论文，,卷期：2008年10-18] anchor affords a fluorescent dye (I) suitable for indicator displacement from cucurbituril macrocycles. The novel compd. I shows, due to a complexation-induced pKa shift, a large and predictable dual fluorescence respon... Enantioselective Synthesis of anti-b-Substituted g,d-Unsaturated Amino Acids: A Highly Selective Asymmetric Thio-Claisen Rearrangement. [作者：Liu, Zhihua;Qu, Hongchang;Gu, Xuyuan;Min, Byoung J.;Nyberg, Joel;Hruby, Victor J.;,期刊：Organic Letters, 页码：4105-4108 , 文章类型： 研究论文，,卷期：2008年10-18] A novel synthesis of optically active anti-b-substituted g,d-unsatd. amino acids I (R1 = R2 = R3 = H; R1 = H, R2 = R3 = Me; R1 = Me, R2 = R3 = H; R1 = R2 = H, R3 = Me, Et, Ph) via a thio-Claisen rearrangement has been ac... Unusually Stable, Versatile, and Pure Arenediazonium Tosylates: Their Preparation, Structures, and Synthetic Applicability. [作者：Filimonov, Victor D.;Trusova, Marina;Postnikov, Pavel;Krasnokutskaya, Elena A.;Lee, Young Min;Hwang, Ho Yun;Kim, Hyunuk;Chi, Ki-Whan;,期刊：Organic Letters, 页码：3961-3964 , 文章类型： 研究论文，,卷期：2008年10-18] A new, simple, and effective method for the diazotization of a wide range of arylamines has been developed by using a polymer-supported diazotization agent in the presence of p-toluenesulfonic acid. Various pure arenedi... Synthesis and Application of Alkenylstannanes Derived from Base-Sensitive Cyclopropenes. [作者：Fordyce, Euan A. F.;Luebbers, Thomas;Lam, Hon Wai;,期刊：Organic Letters, 页码：3993-3996 , 文章类型： 研究论文，,卷期：2008年10-18] In the presence of stoichiometric potassium fluoride, a range of base-sensitive cyclopropenes undergo direct stannylation using (pentafluoroethyl)tributylstannane. The resulting stannylcyclopropenes serve as precursors ... A General One-Step Synthesis of b-Nitronitriles. [作者：Anderson, James C.;Blake, Alexander J.;Mills, Matthew;Ratcliffe, Paul D.;,期刊：Organic Letters, 页码：4141-4143 , 文章类型： 研究论文，,卷期：2008年10-18] The unusual b-nitronitrile functionality, e.g. RCH(CYN)CHR1NO2 (R = iso-Pr, cyclohexyl, tert-Bu, R1 = H; R = iso-Pr, n-pentyl, R1 = Et), was prepd. by a simple one-step hydrocyanation of nitroalkenes. These compds. were... Practical Heck-Mizoroki Coupling Protocol for Challenging Substrates Mediated by an N-Heterocyclic Carbene-Ligated Palladacycle. [作者：Kantchev, Eric Assen B.;Peh, Guang-Rong;Zhang, Chi;Ying, Jackie Y.;,期刊：Organic Letters, 页码：3949-3952 , 文章类型： 研究论文，,卷期：2008年10-18] A highly active, N-heterocyclic carbene-palladacycle precatalyst I for the Heck-Mizoroki reaction was rationally designed. The complex can be synthesized on a large scale in excellent yield by a novel, one-pot, three-co... A Sensitive and Selective Ratiometric Near IR Fluorescent Probe for Zinc Ions Based on the Distyryl-Bodipy Fluorophore. [作者：Atilgan, Serdar;Ozdemir, Tugba;Akkaya, Engin U.;,期刊：Organic Letters, 页码：4065-4067 , 文章类型： 研究论文，,卷期：2008年10-18] A novel distyryl-substituted boradiazaindacene (bodipy) dye with an ion binding seems to be promising as one of the very few water-sol. fluorescent chemosensors emitting in the near IR region. Synthesis and Columnar Mesophase of Fluorescent Liquid Crystals Bearing a C2-Symmetric Chiral Core. [作者：Yang, Chia-Wei;Hsia, Tsai-Hua;Chen, Cheng-Chung;Lai, Chung-Kung;Liu, Rai-Shung;,期刊：Organic Letters, 页码：4069-4072 , 文章类型： 研究论文，,卷期：2008年10-18] 25 A chiral and fluorescent columnar mesogen prepd. from chiral binaphthols is reported. This liq. crystal comprises a C2-sym. chiral mesophase was characterized by appropriate phys. methods. Preparation of highly photosensitizing liposomes with fullerene-doped lipid bilayer using dispersion-controllable molecular exchange reactions. [作者：Ikeda, Atsushi;Sue, Tatsuya;Akiyama, Motofusa;Fujioka, Katsuyoshi;Shigematsu, Tamami;Doi, Yuki;Kikuchi, Jun-ichi;Konishi, Toshifumi;Nakajima, Riichiro;,期刊：Organic Letters, 页码：4077-4080 , 文章类型： 研究论文，,卷期：2008年10-18] Photochemistry, and Photographic and Other Reprographic Fullerene-contg. liposomes with high photosensitization ability were prepd. Disaggregated fullerenes were efficiently injected into the bilayer of liposomes by a p... Synthesis and Activity of Largazole Analogues with Linker and Macrocycle Modification. [作者：Ying, Yongcheng;Liu, Yanxia;Byeon, Seong Rim;Kim, Hyoungsu;Luesch, Hendrik;Hong, Jiyong;,期刊：Organic Letters, 页码：4021-4024 , 文章类型： 研究论文，,卷期：2008年10-18] To characterize largazole's structural requirements for histone deacetylase (HDAC) inhibitory and antiproliferative activities, a series of analogs with modifications to the side chain or 16-membered macrocycle were prep... Diazonamide Support Studies: Stereoselective Formation of the C10 Chiral Center in both the CDEFG and AEFG Fragments. [作者：Lin, Jinzhen;Gerstenberger, Brian S.;Stessman, Nhu Y. T.;Konopelski, Joseph P.;,期刊：Organic Letters, 页码：3969-3972 , 文章类型： 研究论文，,卷期：2008年10-18] The substituted core of the originally proposed core of diazonamide A and the AEFG macrocycle I (Boc = tert-butoxycarbonyl) and the CDEFG ring system of the correct structure of diazonamide A are prepd. using the stereos... Stereoselective Iterative One-Pot Synthesis of N-Glycolylneuraminic Acid-Containing Oligosaccharides. [作者：Crich, David;Wu, Baolin;,期刊：Organic Letters, 页码：4033-4035 , 文章类型： 研究论文，,卷期：2008年10-18] thiosialoside allows the highly stereoselective, one-pot multi-component synthesis of a-sialoside-based oligosaccharides. Short Synthesis of (-)-Cephalotaxine Using a Radical Cascade. [作者：Taniguchi, Tsuyoshi;Ishibashi, Hiroyuki;,期刊：Organic Letters, 页码：4129-4131 , 文章类型： 研究论文，,卷期：2008年10-18] The short total synthesis of (-)-cephalotaxine (I) is described. The concise construction of the pentacyclic core of this alkaloid was achieved by a radical cascade involving 7-endo and 5-endo cyclizations. N,N-Acetals as N-Acyliminium Ion Precursors: Synthesis and Absolute Stereochemistry of Epiquinamide. [作者：Wijdeven, Marloes A.;Wijtmans, Roel;van den Berg, Rutger J. F.;Noorduin, Wim;Schoemaker, Hans E.;Sonke, Theo;van Delft, Floris L.;Blaauw, Richard H.;Fitch, Richard W.;Spande, Thomas F.;Daly, John W.;Rutjes, Floris P. J. T.;,期刊：Organic Letters, 页码：4001-4003 , 文章类型： 研究论文，,卷期：2008年10-18] combination with detn. of the abs. configuration of the natural product. Key steps in the sequence involved chemoenzymic formation of enantiomerically pure cyanohydrin II, reductive cyclization to the corresponding cycli... Dearomatizing Anionic Cyclization of Phosphonamides. A Route to Phosphonic Acid Derivatives with Antitumor Properties. [作者：Ruiz-Gomez, Gloria;Francesch, Andres;Jose Iglesias, Maria;Lopez-Ortiz, Fernando;Cuevas, Carmen;Serrano-Ruiz, Manuel;,期刊：Organic Letters, 页码：3981-3984 , 文章类型： 研究论文，,卷期：2008年10-18] Deprotonation of bis(N-benzyl-N-methyl)-P-arylphosphonic diamides with s-BuLi in THF at -90?takes place selectively at the benzylic position. The anions undergo intramol. attack to the P-aryl ring leading to dearomatize...