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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72条记录   Practical Synthesis of a Renin Inhibitor via a Diastereoselective Dieckmann Cyclization [作者：GAUVREAU DANNY; HUGHES GREG J; LAU STEPHEN Y W; MCKAY DANIEL J; OSHEA PAUL D; SIDLER RICK R; YU BING; DAVIES IAN W,期刊：Organic Letters, 页码：5146-5149 , 文章类型： Article，,卷期：2010年12-22] A scalable synthesis of a potent renin inhibitor (1) is described. The absolute stereochemistry is set via an unprecedented diastereoselective Dieckmann cyclization directed by a remote chiral protecting group. This tran... A De Novo Approach to the Synthesis of Glycosylated Methymycin Analogues with Structural and Stereochemical Diversity [作者：BORISOVA SVETLANA A; GUPPI SANJEEVA R; KIM HAK JOONG; WU BULAN; PENN JOHN H; LIU HUNGWEN; ODOHERTY GEORGE A,期刊：Organic Letters, 页码：5150-5153 , 文章类型： Article，,卷期：2010年12-22] A divergent and highly stereoselective route to 11 glycosylated methymycin analogues has been developed. The key to the success of this method was the iterative use of the Pd-catalyzed glycosylation reaction and postglyc... One-Pot Synthesis of Chiral alpha-Methylene-gamma-lactams with Excellent Diastereoselectivities and Enantioselectivities [作者：SHEN AN; LIU MIN; JIA ZHENSHAN; XU MINGHUA; LIN GUOQIANG,期刊：Organic Letters, 页码：5154-5157 , 文章类型： Article，,卷期：2010年12-22] An efficient one-pot asymmetric synthesis of highly substituted gamma-lactams containing a-methylene groups has been successfully developed. A wide range of gamma-lactams could be obtained in high yields with excellent d... Heronapyrroles A-C: Farnesylated 2-Nitropyrroles from an Australian Marine-Derived Streptomyces sp. [作者：RAJU RITESH; PIGGOTT ANDREW M; DIAZ LETICIA X BARRIENTOS; KHALIL ZEINAB; CAPON ROBERT J,期刊：Organic Letters, 页码：5158-5161 , 文章类型： Article，,卷期：2010年12-22] Chemical analysis of a marine-derived Streptomyces sp. (CMB-M0423) isolated from beach sand off Heron Island, Australia, yielded three new members of the rare pyrroloterpene biosynthetic structure class. Identified by de... Theoretical Investigation of the Rubicordifolin Cascade [作者：LUMB JEANPHILIP; KRINSKY JAMIN L; TRAUNER DIRK,期刊：Organic Letters, 页码：5162-5165 , 文章类型： Article，,卷期：2010年12-22] The results of a theoretical investigation on the complex cascade reaction leading to the natural product rubicordifolin are reported. These computations analyze the discrete transformations that are required during the ... Total Synthesis of Phytophthora Mating Hormone alpha 1 [作者：WANG SHUNYI; SONG PING; CHAN LIYAN; LOH TECKPENG,期刊：Organic Letters, 页码：5166-5169 , 文章类型： Article，,卷期：2010年12-22] Total synthesis of Phytophthora mating hormone alpha 1 (1) has been demonstrated. The required stereochemistries (methyl) are achieved by applying Cul-(S)-Tol-BINAP-catalyzed conjugate addition of Grignard reagents to al... From Conventional to Microphotochemistry: Photodecarboxylation Reactions Involving Phthalimides [作者：SHVYDKIV OKSANA; GALLAGHER SONIA; NOLAN KIERAN; OELGEMOELLER MICHAEL,期刊：Organic Letters, 页码：5170-5173 , 文章类型： Article，,卷期：2010年12-22] A series of acetone-sensitized photodecarboxylation reactions involving phthalimides have been investigated using conventional and microphotochemistry. Both, intra- and intermolecular transformations were compared. In al... Intramolecular Hydroamination of Dithioketene Acetals: An Easy Route To Cyclic Amino Acid Derivatives [作者：XU HAICHAO; MOELLER KEVIN D,期刊：Organic Letters, 页码：5174-5177 , 文章类型： Article，,卷期：2010年12-22] Catalytic intramolecular hydroamination of dithioketene acetals was developed for the synthesis of cyclic amino acid derivatives. Triggered by the addition of a catalytical amount of n-BuLi, the reaction proceeds to give... Tripyrrolidinophosphoric Acid Triamide as an Activator in Samarium Diiodide Reductions [作者：MCDONALD CHRISS E; RAMSEY JEREMY D; SAMPSELL DAVID G; BUTLER JULIE A; CECCHINI MICHAEL R,期刊：Organic Letters, 页码：5178-5181 , 文章类型： Article，,卷期：2010年12-22] The electrochemical and spectrophotometric characterization of the complex formed from samarium diiodide and 4 equiv of tripyrrolidinophosphoric acid triamide (TPPA) is presented. Kinetic studies indicate that the Sml(2)... One-Step Continuous Flow Synthesis of Highly Substituted Pyrrole-3-carboxylic Acid Derivatives via in Situ Hydrolysis of tert-Butyl Esters [作者：HERATH ANANDA; COSFORD NICHOLAS D P,期刊：Organic Letters, 页码：5182-5185 , 文章类型： Article，,卷期：2010年12-22] The first one-step, continuous flow synthesis of pyrrole-3-carboxylic acids directly from tert-butyl acetoacetates, amines, and 2-bromoketones is reported. The HBr generated as a byproduct in the Hantzsch reaction was ut... Palladium-Catalyzed Reductive ortho-Arylation: Evidence for the Decomposition of 1,2-Dimethoxyethane and Subsequent Arylpalladium(II) Reduction [作者：MARTINS ANDREW; CANDITO DAVID A; LAUTENS MARK,期刊：Organic Letters, 页码：5186-5188 , 文章类型： Article，,卷期：2010年12-22] A palladium-catalyzed crossed biaryl coupling/reduction sequence enables the formation of meta-substituted biaryls via solvent-mediated arylpalladium(II) reduction. Isotope labeling studies determined that the decomposit... Concise Synthesis of Bicyclic Pyridinol Antioxidants [作者：LU JUN; CAI XIAOQING; HECHT SIDNEY M,期刊：Organic Letters, 页码：5189-5191 , 文章类型： Article，,卷期：2010年12-22] The recently reported bicyclic pyridinols 1 and 2 are highly effective antioxidants exhibiting 88- and 28-fold greater potency, respectively, than a-tocopherol when assayed for their ability to suppress the autoxidation ... Switching High Two-Photon Efficiency: From 3,8,13-Substituted Triindole Derivatives to Their 2,7,12-Isomers [作者：JI LEI; FANG QI; YUAN MAOSEN; LIU ZHIQIANG; SHEN YUXIANG; CHEN HONGFENG,期刊：Organic Letters, 页码：5192-5195 , 文章类型： Article，,卷期：2010年12-22] Bridging the triindole core and triarylboryl acceptor by an ethenylene linker at the 3,8,13- or 2,7,12-position, the resultant 3-BET and 2-BET show two-photon absorption (TPA) cross sections of delta = 2100 and 2500 GM (... Enantioselective Total Synthesis of (-)- and (+)-Petrosin [作者：TOYA HIROKI; OKANO KENTARO; TAKASU KIYOSEI; IHARA MASATAKA; TAKAHASHI ATSUSHI; TANAKA HARUO; TOKUYAMA HIDETOSHI,期刊：Organic Letters, 页码：5196-5199 , 文章类型： Article，,卷期：2010年12-22] The enantioselective total synthesis of (-)- and (+)-petrosin is described. The union of two key segments was executed by Suzuki Miyaura coupling. The quinolizidine rings were stereoselectively constructed via a diastere... Triptycene: No Homoconjugation Effect for Extending Optical Properties of pi-Conjugated Oligomers [作者：GU XINGWEI; LAI YEEHING,期刊：Organic Letters, 页码：5200-5203 , 文章类型： Article，,卷期：2010年12-22] 1,5- and 1,8-bis(bifluorenyl)anthracene were synthesized and converted to their corresponding bis(bifluorenyl)triptycenes and bis(bifluorenyl)-9,10-dihydroanthracenes. Analysis of their optical properties shows no featur... Preparation of a Cycloheptane Ring from a 1,2-Diketone with High Stereoselectivity [作者：TAKADA YOSHIAKI; NOMURA KENICHI; MATSUBARA SEIJIRO,期刊：Organic Letters, 页码：5204-5205 , 文章类型： Article，,卷期：2010年12-22] Treatment of 1,6-dialkylhexa-1,5-diene-3,4-diones with bis(iodozincio)methane gave zinc alkoxides of cis-5,6-dialkylcyclohepta-3,7-diene-1,3-diol in good yields at room temperature. The reaction proceeded with high stere...