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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75条记录   Columnar Mesomorphism of Fluorescent Board-Shaped Quinoxalinophenanthrophenazine Derivatives with Donor-Acceptor Structure [作者：CHEN SHUAI; READ FARAH S; AHMIDA MOHAMED; KAAFARANI BILAL R; EICHHORN S HOLGER,期刊：Organic Letters, 页码：558-561 , 文章类型： Article，,卷期：2013年15-3] Quinoxalino[2',3':9,10]phenanthro[4,5-abc]phenazine (QPP) dyes have been studied as electron acceptor materials, fluorophores, and building blocks for self-organizing organic semiconductors. Condensation of tetraketopyre... Diastereoselective Synthesis of beta-Heteroaryl syn-alpha-Methyl-beta-Amino Acid Derivatives via a Double Chiral Auxiliary Approach [作者：BIAN JIANWEI; BLAKEMORE DAVID; WARMUS JOSEPH S; SUN JIANMIN; CORBETT MATTHEW; ROSE COLIN R; BECHLE BRUCE M,期刊：Organic Letters, 页码：562-565 , 文章类型： Article，,卷期：2013年15-3] The addition of the SuperQuat enolate to five- and six-membered heterocyclic tert-butyl sulfinimines led to a high syn-selectivity of up to 99:1 in good to excellent yields. The reaction Is tentatively proposed to procee... Model Studies on the First Enzyme-Catalyzed Ugi Reaction [作者：KLOSSOWSKI SZYMON; WIRASZKA BARBARA; BERLOZECKI STANISLAW; OSTASZEWSKI RYSZARD,期刊：Organic Letters, 页码：566-569 , 文章类型： Article，,卷期：2013年15-3] Multicomponent reactions are powerful tools for organic chemistry, and among them, the Ugi reaction provides remarkable improvement in many fields of organic chemistry such us combinatorial chemistry, medicinal chemistry... Synthesis of Benzopyrans by Pd(II)- or Ru(II)-Catalyzed C-H Alkenylation of 2-Aryl-3-hydroxy-2-cyclohexenones [作者：CHIDIPUDI SURESH REDDY; WIECZYSTY MARTIN D; KHAN IMTIAZ; LAM HON WAI,期刊：Organic Letters, 页码：570-573 , 文章类型： Article，,卷期：2013年15-3] 2-Aryl-3-hydroxy-2-cyclohexenones are shown to be competent substrates for palladium- and ruthenium-catalyzed C-H alkenylation reactions with terminal alkenes, providing, in most cases, benzopyrans. Molecular Iodine Catalyzed Cross-Dehydrogenative Coupling Reaction between Two sp(3) C-H Bonds Using Hydrogen Peroxide [作者：NOBUTA TOMOYA; TADA NORIHIRO; FUJIYA AKITOSHI; KARIYA ATSUMASA; MIURA TSUYOSHI; ITOH AKICHIKA,期刊：Organic Letters, 页码：574-577 , 文章类型： Article，,卷期：2013年15-3] A useful method for molecular iodine catalyzed oxidative C-C bond formation between tertiary amines and a carbon nucleophile using hydrogen peroxide as the terminal oxidant is reported. This is the first report of a mole... Synthesis of Carbazole-Based Selenaporphyrin via Annulation [作者：MASUDA MOTOKI; MAEDA CHIHIRO; YOSHIOKA NAOKI,期刊：Organic Letters, 页码：578-581 , 文章类型： Article，,卷期：2013年15-3] Cu(I)-mediated alkoxylation of doubly 1,3-butadiyne-bridged carbazole dimer 1, followed by acid-catalyzed cyclization, provided furan-bridged carbazole dimer 3, while annulation reaction of 1 with selenium in the presenc... Increasing the Efficiency of the Transannular Diels-Alder Strategy via Palladium(II)-Catalyzed Macrocyclizations [作者：IAFE ROBERT G; KUO JONATHAN L; HOCHSTATTER DUSTIN G; SAGA TOMOMI; TURNER JONATHAN W; MERLIC CRAIG A,期刊：Organic Letters, 页码：582-585 , 文章类型： Article，,卷期：2013年15-3] Palladium(II)-catalyzed macrocyclizations of bis(vinylboronate ester) compounds are demonstrated to provide a strategically efficient approach to transannular Diels-Alder reaction substrates. In several systems reported,... Sequential Pd(0)-, Rh(I)-, and Ru(II)-Catalyzed Reactions in a Nine-Step Synthesis of Clinprost [作者：NAGY EMMA E; HYATT I F DEMPSEY; GETTYS KRISTEN E; YEAZELL SHAWN T; FREMPONG STEPHEN K JR; CROATT MITCHELL P,期刊：Organic Letters, 页码：586-589 , 文章类型： Article，,卷期：2013年15-3] A step-economical synthesis of clinprost is reported that concludes with 3 different transition metal-catalyzed reactions: Pd-catalyzed decarboxylation with allylic rearrangement, Rh-catalyzed diene-ene [2+2+1] reaction,... Myriberine A, a New Alkaloid with an Unprecedented Heteropentacyclic Skeleton from Myrioneuron faberi [作者：HUANG SHENGDIAN; ZHANG YU; CAO MINGMING; DI YINGTONG; TANG GUIHUA; PENG ZONGGEN; JIANG JIANDONG; HE HONGPING; HAO XIAOJIANG,期刊：Organic Letters, 页码：590-593 , 文章类型： Article，,卷期：2013年15-3] Myriberine A (1) possessing an unprecedented carbon skeleton was Isolated from Myrioneuron faberi The structure and absolute configuration of 1 were elucidated by a combination of spectroscopic data, X-ray crystallograph... Identification of Ophiobolin F Synthase by a Genome Mining Approach: A Sesterterpene Synthase from Aspergillus clavatus [作者：CHIBA RYOTA; MINAMI ATSUSHI; GOMI KATSUYA; OIKAWA HIDEAKI,期刊：Organic Letters, 页码：594-597 , 文章类型： Article，,卷期：2013年15-3] During a screening of putative diterpene synthase genes found in public databases using the Aspergillus oryzae expression system, it was found that a single transformant with the ACLA_76850 gene from A. clavatus produced... Structural Effects of Proline Substitution and Metal Binding on Hexameric Cyclic Peptoids [作者：IZZO IRENE; IANNIELLO GRAZIELLA; DE COLA CHIARA; NARDONE BRUNELLO; ERRA LOREDANA; VAUGHAN GAVIN; TEDESCO CONSIGLIA; DE RICCARDIS FRANCESCO,期刊：Organic Letters, 页码：598-601 , 文章类型： Article，,卷期：2013年15-3] L-Proline and N-methoxyethyl glycine have been included in novel cyclic hexameric peptoids. Supramolecular coordination with Na+ triggered the formation of the first 1D metal-organic framework based on peptoids. N-Methylimidazole-catalyzed Synthesis of Carbamates from Hydroxamic Acids via the Lossen Rearrangement [作者：YOGANATHAN SABESAN; MILLER SCOTT J,期刊：Organic Letters, 页码：602-605 , 文章类型： Article，,卷期：2013年15-3] An efficient, one-pot, N-methylimidazole (NMI) accelerated synthesis of aromatic and aliphatic carbamates via the Lossen rearrangement is reported. NMI is a catalyst for the conversion of isocyanate intermediates to the ... Conversion of Electron Configuration of Iron Ion through Core Contraction of Porphyrin: Implications for Heme Distortion [作者：ZHOU ZAICHUN; LIU QIUHUA; YAN ZIQIANG; LONG GE; ZHANG XI; CAO CHENZHONG; JIANG RONGQING,期刊：Organic Letters, 页码：606-609 , 文章类型： Article，,卷期：2013年15-3] It was demonstrated experimentally that nonplanar iron porphyrins can be induced to undergo a conversion in their electronic configuration to form a cross-hybrid transition by compressing the macrocyclic core size for th... Zamamiphidin A, a New Manzamine Related Alkaloid from an Okinawan Marine Sponge Amphimedon sp. [作者：KUBOTA TAKAAKI; KAMIJYO YUKI; TAKAHASHINAKAGUCHI AZUSA; FROMONT JANE; GONOI TOHRU; KOBAYASHI JUNICHI,期刊：Organic Letters, 页码：610-612 , 文章类型： Article，,卷期：2013年15-3] A manzamine related alkaloid, zamamiphidin A (1), consisting of a new heptacyclic ring system has been isolated from an Okinawan marine sponge Amphimedon sp. The structure of 1 including the relative stereochemistry was ... Total Synthesis of Paracaseolide A [作者：GUNEY TEZCAN; KRAUS GEORGE A,期刊：Organic Letters, 页码：613-615 , 文章类型： Article，,卷期：2013年15-3] The total synthesis of paracaseolide A, a valuable cell-cycle progression inhibitor, was accomplished in 8 steps from known compounds, with 6.6% overall yield. The synthetic strategy creates strong potential for diversif... N-Chlorosuccinimide, an Efficient Reagent for On-Resin Disulfide Formation in Solid-Phase Peptide Synthesis [作者：POSTMA TOBIAS M; ALBERICIO FERNANDO,期刊：Organic Letters, 页码：616-619 , 文章类型： Article，,卷期：2013年15-3] N-Chlorosuccinimide is described as a widely applicable on-resin disulfide-forming reagent. Disulfide bond formation was completed within 15 min in DMF. This strategy was successfully used in the synthesis of oxytocin an...