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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42条记录   First Total Synthesis of Tubulysin B [作者：PANDO ORLANDO; DOERNER SIMON; PREUSENTANZ RAINER; DENKERT ANNIKA; PORZEL ANDREA; RICHTER WOLFGANG; WESSJOHANN LUDGER,期刊：Organic Letters, 页码：5567-5569 , 文章类型： Article，,卷期：2009年11-24] The first total synthesis of tubulysin B is described. The aziridine route to tubuphenylalanine (Tup) of the tubulysin D/U-series could not be transferred to the synthesis of tubutyrosine (blue moiety). Therefore, tubuty... Novel Nucleophilic Heterocyclic Carbene Mediated Stereoselective Conjugate Addition of Enals to Nitrostyrenes via Homoenolate [作者：NAIR VIJAY; SINU C R; BABU BENEESH P; VARGHESE VIMAL; JOSE ANU; SURESH ERINGATHODI,期刊：Organic Letters, 页码：5570-5573 , 文章类型： Article，,卷期：2009年11-24] A stereoselective Michael addition of homoenolate, generated from enals by nucleophilic heterocyclic carbene (NHC) catalysis, to beta-nitrostyrenes is reported for the first time. The products of this reaction obtained i... Synthesis and Biological Activity of Oxa-Lacticin A2, a Lantibiotic Analogue with Sulfur Replaced by Oxygen [作者：LIU HONGQIANG; PATTABIRAMAN VIJAYA R; VEDERAS JOHN C,期刊：Organic Letters, 页码：5574-5577 , 文章类型： Article，,卷期：2009年11-24] An oxidatively stable analogue 3 of lacticin 3147 A2 (2), wherein the sulfur atoms are replaced with oxygens, was synthesized using solution phase peptide synthesis and sequential on-resin cyclizations. Biological evalua... Highly Catalytic Asymmetric Addition of Deactivated Alkyl Grignard Reagents to Aldehydes [作者：DA CHAOSHAN; WANG JUNRUI; YIN XIAOGANG; FAN XINYUAN; LIU YI; YU SHENGLI,期刊：Organic Letters, 页码：5578-5581 , 文章类型： Article，,卷期：2009年11-24] Generally used and highly reactive RMgBr reagents were effectively deactivated by bis[2-(N,N-dimethylamino)ethyl] ether and then were employed in the highly enantioselective addition of Grignard reagents to aldehydes. Th... Microwave-Assisted Synthesis of 2 '-O-Aryluridine Derivatives [作者：OEDA YUSUKE; IIJIMA YOSHIHIRO; TAGUCHI HARUHIKO; OHKUBO AKIHIRO; SEIO KHOJI; SEKINE MITSUO,期刊：Organic Letters, 页码：5582-5585 , 文章类型： Article，,卷期：2009年11-24] A new method for the synthesis of 2'-O-aryluridines was developed via the microwave-mediated reaction of 2,2'-anhydrouridine with aromatic alcohols. Aminophenol and aminonaphthol derivatives underwent selective 2'-O-aryl... A Serendipitous C-C Bond Formation Reaction between Michael Donors and Diiminoquinoid Ring Assisted by Quaternary Ammonium Fluoride [作者：PAIKE VIJAYKUMAR V; BALAKUMAR R; CHEN HSINYU; SHIH HONGPIN; HAN CHIENCHUNG,期刊：Organic Letters, 页码：5586-5589 , 文章类型： Article，,卷期：2009年11-24] An efficient C-C bond formation reaction assisted by a fluoride ion has been identified for N,N'-diphenyl-1,4-phenylenediimine with the compounds having an active methylene group. The reaction follows the typical Michael... Phorbaketals A, B, and C, Sesterterpenoids with a Spiroketal of Hydrobenzopyran Moiety Isolated from the Marine Sponge Phorbas sp. [作者：RHO JUNGRAE; HWANG BUYNG SU; SIM CHUNG JA; JOUNG SEEWON; LEE HEEYOON; KIM HYEONJIN,期刊：Organic Letters, 页码：5590-5593 , 文章类型： Article，,卷期：2009年11-24] Three new sesterterpenoids, phorbaketals A (1), B (2), and C (3) which,have a spiroketal of the hydrobenzopyran moiety, were isolated from the Korean marine sponge Phorbas sp. Their complete structures were elucidated by... Ambient Temperature Hydrophosphination of Internal, Unactivated Alkynes and Allenyl Phosphineoxides with Phosphine Borane Complexes [作者：BUSACCA CARL A; FARBER ELISA; DEYOUNG JAY; CAMPBELL SCOT; GONNELLA NINA C; GRINBERG NELU; HADDAD NIZAR; LEE HEEWON; MA SHENGLI; REEVES DIANA; SHEN SHERRY; SENANAYAKE CHRIS H,期刊：Organic Letters, 页码：5594-5597 , 文章类型： Article，,卷期：2009年11-24] Phosphine boranes have been found to hydrophosphinate internal, unactivated alkynes at room temperature under basic conditions without the need for catalysts or radical initiators, The use of air-sensitive secondary phos... Molecular Machinery: Synthesis of a "Nanodragster" [作者：VIVES GUILLAUME; KANG JUNGHO; KELLY KEVIN F; TOUR JAMES M,期刊：Organic Letters, 页码：5602-5605 , 文章类型： Article，,卷期：2009年11-24] The synthesis and imaging by scanning tunneling microscopy of a mixed wheeled nanovehicle composed of a p-carborane small-wheeled short front axle and a C-60 large-wheeled long rear axle that has been termed a nanodragst... Highly Regioselective Palladium-Catalyzed Oxidative Coupling of Indolizines and Vinylarenes via C-H Bond Cleavage [作者：YANG YUZHU; CHENG KAI; ZHANG YUHONG,期刊：Organic Letters, 页码：5606-5609 , 文章类型： Article，,卷期：2009年11-24] A highly regioselective oxidative coupling reaction between indolizines and vinylarenes has been accomplished in the presence of palladium catalysts to give only the branched a-product in high efficiency. The regioselect... A Gold(III) Ion-Selective Fluorescent Probe and Its Application to Bioimagings [作者：YANG YOUNGKEUN; LEE SUNHO; TAE JINSUNG,期刊：Organic Letters, 页码：5610-5613 , 文章类型： Article，,卷期：2009年11-24] A highly selective and sensitive fluorescent chemosensor for Au3+ has been reported. The system utilizes an irreversible Au3+-promoted cyclization reaction of a rhodamine amide tethered with an alkyne. The probe can sens... Increased Yields and Simplified Purification with a Second-Generation Cobalt Catalyst for the Oxidative Formation of trans-THF Rings [作者：PALMER CORY; MORRA NICHOLAS A; STEVENS ANDREW C; BAJTOS BARBORA; MACHIN BEN P; PAGENKOPF BRIAN L,期刊：Organic Letters, 页码：5614-5617 , 文章类型： Article，,卷期：2009年11-24] The synthesis of a second-generation cobalt catalyst for the formation of trans-THF products via the Mukaiyama aerobic oxidative cyclization is reported. Two procedures have been developed with the new water-soluble cata... General and Functional Group-Tolerable Approach to Allenylsilanes by Rhodium-Catalyzed Coupling between Propargylic Carbonates and a Silylboronate [作者：OHMIYA HIROHISA; ITO HIDETO; SAWAMURA MASAYA,期刊：Organic Letters, 页码：5618-5620 , 文章类型： Article，,卷期：2009年11-24] The Rh-catalyzed coupling reaction between propargylic carbonates and a silylboronate afforded allenylsilanes with different substitution patterns in high yields. The reaction tolerates a variety of functional groups in ... Carbonyldiimidazole-Mediated Lossen Rearrangement [作者：DUBE PASCAL; NATHEL NOAH F FINE; VETELINO MICHAEL; COUTURIER MICHEL; ABOUSSAFY CLAUDE LARRIVEE; PICHETTE SIMON; JORGENSEN MATTHEW L; HARDINK MARK,期刊：Organic Letters, 页码：5622-5625 , 文章类型： Article，,卷期：2009年11-24] Carbonyldiimidazole (CDI) was found to mediate the Lossen rearrangement of various hydroxamic acids to isocyanates. This process is experimentally simple and mild, with imidazole and CO2 being the sole stoichiometric byp... Pd(II)/Bu-t-quinolineoxazoline: An Air-Stable and Modular Chiral Catalyst System for Enantioselective Oxidative Cascade Cyclization [作者：HE WEI; YIP KAITAI; ZHU NIANYONG; YANG DAN,期刊：Organic Letters, 页码：5626-5628 , 文章类型： Article，,卷期：2009年11-24] An air-stable and structurally tunable chiral Bu-t-quinolineoxazoline/Pd(II) catalyst system has been developed for the enantioselective oxidative cascade cyclization of a variety of disubstituted olefinic substrates, wi... Regiospecific Decarboxylative Allylation of Nitriles [作者：RECIO ANTONIO III; TUNGE JON A,期刊：Organic Letters, 页码：5630-5633 , 文章类型： Article，,卷期：2009年11-24] Palladium-catalyzed decarboxylative alpha-allylation of nitriles readily occurs with use of Pd-2(dba)(3) and rac-BINAP. This catalyst mixture also allows the highly regiospecific alpha-allylation of nitrites in the prese...