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84条记录   Total Synthesis of (-)-Histrionicotoxin [作者：ADACHI YOHEI; KAMEI NORIYUKI; YOKOSHIMA SATOSHI; FUKUYAMA TOHRU,期刊：Organic Letters, 页码：4446-4449 , 文章类型： Article，,卷期：2011年13-16] A total synthesis of (-)-histrionicotozin was achieved. Our synthesis features preparation of a pseudosymmetrical dienyne through chirality transfer from an allenylsilane, a dienyne metathesis to produce the bicyclo [5.4... New Chiral Cyclooctatriene-Based Polycyclic Architectures [作者：PIETERS GREGORY; GAUCHER ANNE; MARROT JEROME; MAUREL FRANCOIS; NAUBRON JEANVALERE; JEAN MARION; VANTHUYNE NICOLAS; CRASSOUS JEANNE; PRIM DAMIEN,期刊：Organic Letters, 页码：4450-4453 , 文章类型： Article，,卷期：2011年13-16] The synthesis and properties of new chiral polycycllic. architectures that display both helicity and a saddle-type shape are described. The enantiomers have been separated, and their absolute configuration was determined... Palladium-Catalyzed Approach to Primary Amides Using Nongaseous Precursors [作者：NIELSEN DENNIS U; TAANING ROLF H; LINDHARDT ANDERS T; GOGSIG THOMAS M; SKRYDSTRUP TROELS,期刊：Organic Letters, 页码：4454-4457 , 文章类型： Article，,卷期：2011年13-16] A simple protocol Is reported for the preparation of primary aryl amides under Pd-catalyzed carbonylation chemistry applying a two-chamber system with crystalline and nontransition metal based sources of carbon monoxide ... Oxidative Coupling as a Biomimetic Approach to the Synthesis of Scytonemin [作者：EKEBERGH ANDREAS; KARLSSON ISABELLA; METE RUDI; PAN YE; BORJE ANNA; MARTENSSON JERKER,期刊：Organic Letters, 页码：4458-4461 , 文章类型： Article，,卷期：2011年13-16] The first total synthesis of the dimeric alkaloid pigment scytonemin is described. The key transformations In Its synthesis from 3-indole acetic acid are a Heck carbocyclization and a Suzuki-Miyaura cross-coupling, orche... Copper(I)-Catalyzed Regioselective Propargylic Substitution Involving Si-B Bond Activation [作者：VYAS DEVENDRA J; HAZRA CHINMOY K; OESTREICH MARTIN,期刊：Organic Letters, 页码：4462-4465 , 文章类型： Article，,卷期：2011年13-16] The silicon nucleophile generated by copper(I)-catalyzed Si-B bond activation allows several gamma-selective propargylic substitutions. The regioselectivity (gamma:alpha ratio) Is strongly dependent on the propargylic le... Palladium(II)-Catalyzed Direct Intermolecular Alkenylation of Chromones [作者：KIM DONGHEE; HONG SUNGWOO,期刊：Organic Letters, 页码：4466-4469 , 文章类型： Article，,卷期：2011年13-16] A new efficient method for the direct alkenylation of chromones via a palladium(II)-catalyzed C-H functionalization reaction was developed. The use of pivalic acid with Cu(OAc)(3)/Ag(2)CO(3) provided superior reactivity ... Determination of Absolute Configuration Using Kinetic Resolution Catalysts [作者：WAGNER ALEXANDER J; DAVID JONATHAN G; RYCHNOVSKY SCOTT D,期刊：Organic Letters, 页码：4470-4473 , 文章类型： Article，,卷期：2011年13-16] A new method was developed to assign the absolute configuration of molecules using kinetic resolution catalysts. Secondary alcohols were acylated in the presence of Birman's S-HBTM and R-HBTM catalysts, and the fast-reac... A Palladium-Catalyzed Vinylcyclopropane (3+2) Cycloaddition Approach to the Melodinus Alkaloids [作者：GOLDBERG ALEXANDER F G; STOLTZ BRIAN M,期刊：Organic Letters, 页码：4474-4476 , 文章类型： Article，,卷期：2011年13-16] A palladium-catalyzed (3 + 2) cycloaddition of a vinylcyclopropane and a beta-nitrostyrene is employed to rapidly assemble the cyclopentane core of the Melodinus alkaloids. The ABCD ring system of the natural product fam... New Candidaspongiolides, Tedanolide Analogues That Selectively Inhibit Melanoma Cell Growth (vol 13, pg 3518, 2011) [作者：WHITSON EMILY L; PLUCHINO KRISTEN M; HALL MATTHEW D; MCMAHON JAMES B; MCKEE TAWNYA C,期刊：Organic Letters, 页码：4477-4477 , 文章类型： Correction，,卷期：2011年13-16] Ruthenium-Catalyzed Oxidative C-H Bond Alkenylations in Water: Expedient Synthesis of Annulated Lactones [作者：ACKERMANN LUTZ; POSPECH JOLA,期刊：Organic Letters, 页码：4153-4155 , 文章类型： Article，,卷期：2011年13-16] Ruthenium-catalyzed cross-dehydrogenative C-H bond alkenylations occurred efficiently in environmentally benign water, which was exploited for an oxidative phthalide synthesis with ample scope. Mechanistic studies provid... Protection-Free One-Pot Synthesis of 2 '-Deoxynucleoside 5 '-Triphosphates and DNA Polymerization [作者：CATONWILLIAMS JULIANNE; SMITH MATTHEW; CARRASCO NICOLAS; HUANG ZHEN,期刊：Organic Letters, 页码：4156-4159 , 文章类型： Article，,卷期：2011年13-16] By differentiating the functional groups on nucleosides, we have designed and developed a one-pot synthesis of deoxyribonucleoside 5'-triphosphates without any protection on the nucleosides. A facile synthesis is achieve... One- and Two-Photon Live Cell Imaging Using a Mutant SNAP-Tag Protein and Its FRET Substrate Pairs [作者：ZHANG CHONGJING; LI LIN; CHEN GRACE Y J; XU QINGHUA; YAO SHAO Q,期刊：Organic Letters, 页码：4160-4163 , 文章类型： Article，,卷期：2011年13-16] A small molecule-assisted protein labeling strategy based on a mutant SNAP-Tag (mSNAP) and its FRET substrate pairs has been developed. Both one- and two-photon fluorescence microscopic experiments were successfully demo... TPAP-Catalyzed Direct Oxidation of Primary Alcohols to Carboxylic Acids through Stabilized Aldehyde Hydrates [作者：SCHMIDT ANDREAKATHARINA C; STARK CHRISTIAN B W,期刊：Organic Letters, 页码：4164-4167 , 文章类型： Article，,卷期：2011年13-16] We present a simple, mild, and highly effective method for the direct conversion of primary alcohols to carboxylic acids. TPAP serves as the catalyst, and NMO center dot H(2)O plays a dual role, acting as the co-oxidant ... Synthesis and Properties of Novel C(3)-Symmetric Coplanar Chromophores [作者：CHEN JIAHONG; WANG SHAOAN; LIU YIHUNG; WONG KENTSUNG,期刊：Organic Letters, 页码：4168-4171 , 文章类型： Article，,卷期：2011年13-16] New synthetic pathways for novel C(3)-symmetric molecules featured with a thlophene-fused six-five-five carbon-bridged coplanar core structure have been established. The incorporation of thiophene as the constituent of a... Transition-Metal-Free Alkynylation of Aryl Chlorides [作者：THANH TRUONG; DAUGULIS OLAFS,期刊：Organic Letters, 页码：4172-4175 , 文章类型： Article，,卷期：2011年13-16] Two sets of conditions have been developed for a base-mediated, transition-metal-free alkynylation of aryl chlorides that proceeds via benzyne intermediates. The first set of conditions Involves the use of TMPLI base in ... Organocatalytic Asymmetric Michael-Type/Wittig Reaction of Phosphorus Ylides: Synthesis of Chiral alpha-Methylene-delta-Ketoesters [作者：LIN AIJUN; WANG JUNYING; MAO HAIBIN; GE HUIMING; TAN RENXIANG; ZHU CHENGJIAN; CHENG YIXIANG,期刊：Organic Letters, 页码：4176-4179 , 文章类型： Article，,卷期：2011年13-16] An asymmetric Michael-type reaction of phosphorus ylides and alpha,beta-unsaturated ketones under the catalysis of a chiral ion pair catalyst has been described. The ion pair catalyst containing a chiral counteranion was...