个性化文献订阅>文章检索

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71条记录   Three New Indole Alkaloids from Trigonostemon Iii [作者：TAN CHENGJIAN; DI YINGTONG; WANG YUEHU; ZHANG YU; SI YIKANG; ZHANG QIANG; GAO SUO; HU XUJIA; FANG XIN; LI SHIFEI; HAO XIAOJIANG,期刊：Organic Letters, 页码：2370-2373 , 文章类型： Article，,卷期：2010年12-10] Three unprecedented indole alkaloids, trigonoliimines A-C (1-3) with a unique polycyclic system, were isolated from the leaves of Trigonostemon lii Y. T. Chang. The structures of 1-3 were determined by the spectroscopic,... Direct Functionalization of Polycyclic Aromatics via Radical Perfluoroalkylation [作者：LI YAN; LI CHENG; YUE WAN; JIANG WEI; KOPECEK RALF; QU JIANQIANG; WANG ZHAOHUI,期刊：Organic Letters, 页码：2374-2377 , 文章类型： Article，,卷期：2010年12-10] Direct functionalization of electron-deficient and electron-rich polycyclic aromatics via copper-mediated radical perfluoroalkylation was achieved in high yields. A Chiral Solvent Effect in Asymmetric Organocatalysis [作者：NORTH MICHAEL; VILLUENDAS PEDRO,期刊：Organic Letters, 页码：2378-2381 , 文章类型： Article，,卷期：2010年12-10] Proline-catalyzed aldol reactions between enolizable ketones and aromatic aldehydes can be carried out in propylene carbonate. When enantiomerically pure propylene carbonate is used, the combination of (R)-proline and (R... Tunable Optical Properties of Chromophores Derived from Oligo(p-phenylene vinylene) [作者：GUERLIN AUDREY; DUMUR FREDERIC; DUMAS EDDY; MIOMANDRE FABIEN; WANTZ GUILLAUME; MAYER CEDRIC R,期刊：Organic Letters, 页码：2382-2385 , 文章类型： Article，,卷期：2010年12-10] A series of 11 symmetric push-pull chromophores consisting of electron-accepting groups connected through a central pi-conjugated system derived from oligo(p-phenylene vinylene) (OPV) were designed and synthesized. Elect... Pyridyldithiafulvenes as Precursors of Coordination-Driven Self-Assembled Redox Active Macrocycle [作者：GONTIER ELODIE; BELLEC NATHALIE; BRIGNOU PIERRE; GOHIER ARNAUD; GUERRO MICHEL; ROISNEL THIERRY; LORCY DOMINIQUE,期刊：Organic Letters, 页码：2386-2389 , 文章类型： Article，,卷期：2010年12-10] A novel redox active macrocycle including two vinylogous tetrathiafulvalenes (TTFVs) and two molybdenum tetracarbonyl fragments has been synthezised thanks to the coordination-driven self-assembly of complementary angula... Lysidicins F-H, Three New Phloroglucinols from Lysidice rhodostegia [作者：WU XIANFU; HU YOUCAI; YU SHISHAN; JIANG NAN; MA JING; TAN RENXIANG; LI YONG; LV HAINING; LIU JING; MA SHUANGGANG,期刊：Organic Letters, 页码：2390-2393 , 文章类型： Article，,卷期：2010年12-10] Three new phloroglucinols, named lysidicins F-H (1-3), were isolated from the roots of Lysidice rhodostegia. These compounds have a unprecedented benzyl benzo[b]furo[3,2-d]furan skeleton, and lysidicin F (1) is the first... Enantiospecific, Biosynthetically Inspired Formal Total Synthesis of (+)-Liphagal [作者：GEORGE JONATHAN H; BALDWIN JACK E; ADLINGTON ROBERT M,期刊：Organic Letters, 页码：2394-2397 , 文章类型： Article，,卷期：2010年12-10] A biosynthetically inspired synthesis of (+)-liphagal has been achieved from (+)-sclareolide in 13 steps (9% overall yield). The key step is a biomimetic ring expansion of a highly stabilized benzylic carbocation, which ... Synthesis of a DOTA-Biotin Conjugate for Radionuclide Chelation via Cu-Free Click Chemistry [作者：SCHULTZ MICHAEL K; PARAMESWARAPPA SHARAVATHI G; PIGGE F CHRISTOPHER,期刊：Organic Letters, 页码：2398-2401 , 文章类型： Article，,卷期：2010年12-10] A strain-induced copper-free click reaction mediated by a new and easily prepared cyclooctyne derivative was used to efficiently assemble a DOTA biotin adduct capable of radionuclide (Ga-68) uptake. This synthetic strate... Total Synthesis of Syringolin A and B [作者：PIRRUNG MICHAEL C; BISWAS GOUTAM; IBARRARIVERA TANNYA R,期刊：Organic Letters, 页码：2402-2405 , 文章类型： Article，,卷期：2010年12-10] Total syntheses of two recently discovered proteasome inhibitors, syringolin A and B, are reported. The key to our approach was creation of the alpha,beta-unsaturated 12-membered lactam via intramolecular Horner-Wadswort... Synthesis of N-Aryl and N-Alkyl Anthranilic Acids via SNAr Reaction of Unprotected 2-Fluoro- and 2-Methoxybenzoic Acids by Lithioamides [作者：BELAUDROTUREAU MICKAEL; TIN THANH LE; THI HUONG THU PHAN; THI HUU NGUYEN; AISSAOUI REGADIA; GOHIER FREDERIC; DERDOUR AICHA; NOURRY ARNAUD; CASTANET ANNESOPHIE; KIM PHI PHUNG NGUYEN; MORTIER JACQUES,期刊：Organic Letters, 页码：2406-2409 , 文章类型： Article，,卷期：2010年12-10] Substitution of the fluoro or methoxy group in unprotected 2-fluoro- and 2-methoxybenzoic acids to afford N-aryl and N-alkyl anthranilic acids occurs upon reaction with lithioamides under mild conditions in the absence o... Synthesis of Alkyl Alkynyl Ketones by Pd/Light-Induced Three-Component Coupling Reactions of Iodoalkanes, CO, and 1-Alkynes [作者：FUSANO AKIRA; FUKUYAMA TAKAHIDE; NISHITANI SATOSHI; INOUYE TAKAYA; RYU ILHYONG,期刊：Organic Letters, 页码：2410-2413 , 文章类型： Article，,卷期：2010年12-10] Under photoirradiation conditions using xenon light, In the presence of a catalytic amount of PdCl2(PPh3)(2) with triethylamine as a base, a three-component coupling reaction of iodoalkanes, carbon monoxide, and terminal... Chiral Bronsted Acid Catalyzed Enantioselective Addition of alpha-Isocyanoacetamides to Aldehydes [作者：ZENG XIAOFEI; YE KEHAN; LU MIN; CHUA PEI JUAN; TAN BIN; ZHONG GUOFU,期刊：Organic Letters, 页码：2414-2417 , 文章类型： Article，,卷期：2010年12-10] A clean and highly efficient enantioselective addition-of alpha-isocyanoacetamides to aliphatic aldehydes catalyzed by chiral phosphoric acid in the presence of MS 5 angstrom in toluene at -40 degrees C was developed. Ex... Morita-Baylis-Hillman Reaction of Lactams and Lactones with Alkyl Halides and Epoxides Catalyzed by Hydroxysulfides [作者：SUAREZ DEL VILLAR IRENE; GRADILLAS ANA; DOMINGUEZ GEMA; PEREZCASTELLS JAVIER,期刊：Organic Letters, 页码：2418-2421 , 文章类型： Article，,卷期：2010年12-10] A new Morita-Baylis-Hillman reaction methodology in which alkyl halides and epoxides act as electrophiles in their reaction with lactones and lactams is shown. Catalysis is efficiently performed by hydroxy sulfides under... Asymmetric Synthesis of Spiro-3,4-dihydropyrans via a Domino Organocatalytic Sequence [作者：YAO WEIJUN; PAN LIANJIE; WU YIHUA; MA CHENG,期刊：Organic Letters, 页码：2422-2425 , 文章类型： Article，,卷期：2010年12-10] A cinchona alkaloid-catalyzed domino Michael/hemiacetalization reaction of cyclic beta-oxo aldehydes and aromatic beta,gamma-unsaturated a-keto esters, resulting in the formation of spiro-dihydropyran architectures in go... Novel Polyesterified 334-seco-Grayanane Diterpenoids as Antifeedants from Pieris formosa [作者：LI CHUNHUAN; NIU XUEMEI; LUO QIAN; XIE MINGJIN; LUO SHIHONG; ZHOU YANYING; LI SHENGHONG,期刊：Organic Letters, 页码：2426-2429 , 文章类型： Article，,卷期：2010年12-10] Pieris formosa is a poisonous plant to livestock and is used as an insecticide in rural areas of China. Two novel polyesterified 3,4-seco-grayanane diterpenoids, pierisoids A and B (1 and 2),. were isolated from its flow... One-Pot Synthesis of Amine-Substituted Aryl Sulfides and Benzo[b]thiophene Derivatives [作者：DUAN ZHONGYU; RANJIT SADANANDA; LIU XIAOGANG,期刊：Organic Letters, 页码：2430-2433 , 文章类型： Article，,卷期：2010年12-10] A series of amine-substituted aryl sulfides have been synthesized from nitroaryl halides via a simple one-pot procedure involving metal-free C S cross-coupling and in situ nitro group reduction. Various nitroaryl halides...