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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70条记录   Corannulene Subunit Acts as a Diene in a Cycloaddition Reaction: Synthesis of C80H32 Corannulyne Tetramer [作者：YANNEY MICHAEL; FRONCZEK FRANK R; SYGULA ANDRZEJ,期刊：Organic Letters, 页码：4942-4945 , 文章类型： Article，,卷期：2012年14-18] Distortion of six-membered rings in corannulene subunits of corannulyne (1,2-didehydrocorannulene) cyclotrimer activates the system for a cycloaddition reaction with another corannulyne unit. This unprecedented cycloaddi... New WS9326A Congeners from Streptomyces sp 9078 Inhibiting Brugia malayi Asparaginyl-tRNA Synthetase [作者：YU ZHIGUO; VODANOVICJANKOVIC SANJA; KRON MICHAEL; SHEN BEN,期刊：Organic Letters, 页码：4946-4949 , 文章类型： Article，,卷期：2012年14-18] Lymphatic filariasis is caused by the Brugia malayi parasite. Three new congeners of the depsipeptide WS9326A (1), WS9326C (2), WS9326D (3), and WS9326E (4), were isolated from Streptomyces sp. 9078 by using a B. malayi ... Copper-Catalyzed Dehydrogenative Cross-Coupling of Benzothiazoles with Thiazoles and Polyfluoroarene [作者：FAN SHILU; CHEN ZHAO; ZHANG XINGANG,期刊：Organic Letters, 页码：4950-4953 , 文章类型： Article，,卷期：2012年14-18] A copper-catalyzed dehydrogenative cross-coupling of benzothiazoles with thiazoles and polyfluoroarene under mild reaction conditions is described. This protocol provides a straightforward and operationally simple method... De Novo Synthesis of the Bacterial 2-Amino-2,6-Dideoxy Sugar Building Blocks D-Fucosamine, D-Bacillosamine, and D-Xylo-6-deoxy-4-ketohexosamine [作者：LEONORI DANIELE; SEEBERGER PETER H,期刊：Organic Letters, 页码：4954-4957 , 文章类型： Article，,卷期：2012年14-18] The cell-surface glycans on bacteria contain many monosaccharides that cannot be obtained by isolation from natural sources. Availability of differentially protected monosaccharides is therefore often limiting access to ... Efficient Synthesis of gamma-Lactones via Gold-Catalyzed Tandem Cycloisomerization/Oxidation [作者：SHU CHAO; LIU MENGQI; SUN YUZHE; YE LONGWU,期刊：Organic Letters, 页码：4958-4961 , 文章类型： Article，,卷期：2012年14-18] A novel Au-catalyzed tandem cycloisomerization/oxidation of homopropargyl alcohols was developed. Various gamma-lactones can be accessed readily by utilizing this strategy. Notably, the mechanism of this reaction is dist... Enantiodifferentiating Photocyclodimerization of 2-Anthracenecarboxylic Acid via Competitive Binary/Ternary Hydrogen-Bonded Complexes with 4-Benzamidoprolinol [作者：KAWANAMI YUKO; KATSUMATA SHINYA; MIZOGUCHI JUNICHI; NISHIJIMA MASAKI; FUKUHARA GAKU; YANG CHENG; MORI TADASHI; INOUE YOSHIHISA,期刊：Organic Letters, 页码：4962-4965 , 文章类型： Article，,卷期：2012年14-18] Circular dichroism (CD) spectral examinations at various host/guest ratios revealed that 2-anthracenecarboxylic acid (AC) forms not only 1:1 but also novel 2:1 hydrogen-bonded/pi-stacked complexes with a chiral 4-benzami... Palladium-Catalyzed C(sp(2))-H Cyanation Using Tertiary Amine Derived Isocyanide as a Cyano Source [作者：PENG JIANGLING; ZHAO JIAJI; HU ZIWEI; LIANG DONGDONG; HUANG JINBO; ZHU QIANG,期刊：Organic Letters, 页码：4966-4969 , 文章类型： Article，,卷期：2012年14-18] An unprecedented palladium-catalyzed cyanation of aromatic C-H bonds by using tertiary amine derived isocyanide as a novel cyano source was developed. Cu(TFA)(2) was used as a requisite stoichiometric oxidant. Mechanisti... "Extreme" Ugi Reactions With Some Complex alpha-Amino Acids [作者：TURNER CHARLES DYLAN; CIUFOLINI MARCO A,期刊：Organic Letters, 页码：4970-4973 , 文章类型： Article，,卷期：2012年14-18] The Ti(IV)-catalyzed Ugi condensation of alpha-amino acids with electron-rich aromatic aldehydes performs adequately even with sterically demanding alpha-amino carboxylate salts. The reaction occurs diastereoselectively,... A New Route to a 2-Phosphanaphthalene [作者：MAO YANLI; MENG KELVIN; LIM HUI; GANGULY RAKESH; MATHEY FRANCOIS,期刊：Organic Letters, 页码：4974-4975 , 文章类型： Article，,卷期：2012年14-18] The reaction between methylenechlorophosphine-pentacarbonyltungsten and an isobenzofuran affords a [4 + 2] adduct whose oxygen bridge is broken by BBr3, leading to a 2-phosphanaphthalene. Trefolane A, a Sesquiterpenoid with a New Skeleton from Cultures of the Basidiomycete Tremella foliacea [作者：DING JIANHAI; FENG TAO; LI ZHENGHUI; YANG XIAOYAN; GUO HUE; YIN XIA; WANG GANGQIANG; LIU JIKAI,期刊：Organic Letters, 页码：4976-4978 , 文章类型： Article，,卷期：2012年14-18] Trefolane A (1), an unprecedented skeleton with a 5/6/4 tricyclic ring system, was isolated from cultures of the basidiomycete Tremella foliacea. The structure was elucidated by means of spectroscopic methods and further... RuHCl(CO)(PPh3)(3)-Catalyzed alpha-Alkylation of Ketones with Primary Alcohols [作者：KUWAHARA TAKASHI; FUKUYAMA TAKAHIDE; RYU ILHYONG,期刊：Organic Letters, 页码：4703-4705 , 文章类型： Article，,卷期：2012年14-18] The alpha-alkylation reaction of ketones with primary alcohols to give alpha-alkylated ketones was achieved using RuHCl(CO)(PPh3)(3) as a catalyst in the presence of Cs2CO3 as a base. This reaction proceeds via an aldol ... Troger's Base Twisted Amides: Endo Functionalization and Synthesis of an Inverted Crown Ether [作者：ARTACHO JOSEP; ASCIC ERHAD; RANTANEN TONI; WALLENTIN CARLJOHAN; DAWAIGHER SAMI; BERGQUIST KARLERIK; HARMATA MICHAEL; SNIECKUS VICTOR; WAERNMARK KENNETH,期刊：Organic Letters, 页码：4706-4709 , 文章类型： Article，,卷期：2012年14-18] Taking advantage of the unconventional reactivity of twisted mono- and bis-amides of Troger's base (TB), rac-6 and rac-7, respectively, the first synthesis of a 6-endo-monosubstituted TB analogue, rac-9, and the first ra... Total Synthesis of (+)-Aureol [作者：KUAN KEVIN K W; PEPPER HENRY P; BLOCH WITOLD M; GEORGE JONATHAN H,期刊：Organic Letters, 页码：4710-4713 , 文章类型： Article，,卷期：2012年14-18] A total synthesis of the marine sponge meroterpenoid (+)-aureol has been achieved in 12 steps (6% overall yield) from (+)-sclareolide. Key steps of the synthesis include a biosynthetically inspired sequence of 1,2-hydrid... Dynamic Thiol Exchange with beta-Sulfido-alpha,beta-Unsaturated Carbonyl Compounds and Dithianes [作者：JOSHI GURURAJ; ANSLYN ERIC V,期刊：Organic Letters, 页码：4714-4717 , 文章类型： Article，,卷期：2012年14-18] A reversible covalent bond exchange of thiols, beta-sulfido-alpha,beta-unsaturated carbonyls, and dithianes has been studied in DMSO and D2P/DMSO mixtures. The equilibrium between thiols and beta-sulfido-alpha,beta-unsat... Orthogonally Functionalized Naphthodithiophenes: Selective Protection and Borylation [作者：SHINAMURA SHOJI; SUGIMOTO RYUSUKE; YANAI NAOYUKI; TAKEMURA NORIKO; KASHIKI TOMOYA; OSAKA ITARU; MIYAZAKI EIGO; TAKIMIYA KAZUO,期刊：Organic Letters, 页码：4718-4721 , 文章类型： Article，,卷期：2012年14-18] Selective functionalization protocols of naphtho[1,2-b;5,6-b']dithiophene (NDT3) by combining protection of the thiophene alpha-positions and direct borylation on the naphthalene core are described, which allows synthesi... Remarkable Improvement Achieved by Imidazole Derivatives in Ruthenium-Catalyzed Hydroesterification of Alkenes Using Formates [作者：KONISHI HIDEYUKI; UEDA TSUYOSHI; MUTO TAKASHI; MANABE KEI,期刊：Organic Letters, 页码：4722-4725 , 文章类型： Article，,卷期：2012年14-18] Imidazole derivatives are revealed to be effective ligands in the Ru-catalyzed hydroesterification of alkenes using formates, affording one-carbon-elongated esters in high yields. Further, intramolecular hydroesterificat...