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39条记录   Araiosamines A-D: Tris-bromoindole Cyclic Guanidine Alkaloids from the Marine Sponge Clathria (Thalysias) araiosa [作者：WEI XIAOMEI; HENRIKSEN NIEL M; SKALICKY JACK J; HARPER MARY KAY; CHEATHAM THOMAS E III; IRELAND CHRIS M; VAN WAGONER RYAN M,期刊：Journal of Organic Chemistry, 页码：5515-5523 , 文章类型： Article，,卷期：2011年76-14] Four new tris-bromoindole cyclic guanidine alkaloids, araiosamines A-D, were isolated from the methanol extract of a marine sponge, Clathria (Thalysias) araiosa, collected from Vanuatu. Their carbon skeletons delineate a... Chiral Amplification in One-Dimensional Helical Nanostructures Self-Organized from Phenylethynyl Thiophene with Elaborated Long-Chain Dicarboxamides [作者：LI CHUNHSIAN; CHANG KAICHI; TSOU CHIACHEN; LAN YIKANG; YANG HSIAOCHING; SUN SHIHSHENG,期刊：Journal of Organic Chemistry, 页码：5524-5530 , 文章类型： Article，,卷期：2011年76-14] A bis-phenylethynyl thiophene derivative functionalized with long-chain pyridyl biscarboxamides displayed unique helical morphology in the xerogel form via nicely complementary intermolecular interactions. The helical na... Synthesis of Heterocyclic Homotriptycenes [作者：ZHANG HONG; CAO DERONG; LIU WENJIE; JIANG HUANFENG; MEIER HERBERT,期刊：Journal of Organic Chemistry, 页码：5531-5538 , 文章类型： Article，,卷期：2011年76-14] A series of novel heterocyclic homotriptycenes bearing furan, thiophene, and pyridine rings, 7a-f, were synthesized by intramolecular dehydration reactions of 10,10-dihetarylmethyl-9,10-dihydroanthracen-9-ols 6a-f. In th... Reduction of Benzylidene Dibenzo[a,d]cycloheptenes: Over-Reduction of Antiaromatic Dianions to Aromatic Tetraanions [作者：TRESCA BLAKELY; HIGBEE MACDONALD; MILLS NANCY S,期刊：Journal of Organic Chemistry, 页码：5539-5546 , 文章类型： Article，,卷期：2011年76-14] The antiaromaticity of a series of dianions of p-substituted benzylidene dibenzo[a,d]cycloheptenes was examined through calculated measures of antiaromaticity. The nucleus-independent chemical shifts (NICS) and magnetic ... Impregnated Ruthenium on Magnetite as a Recyclable Catalyst for the N-Alkylation of Amines, Sulfonamides, Sulfinamides, and Nitroarenes Using Alcohols as Electrophiles by a Hydrogen Autotransfer Process [作者：CANO RAFAEL; RAMON DIEGO J; YUS MIGUEL,期刊：Journal of Organic Chemistry, 页码：5547-5557 , 文章类型： Article，,卷期：2011年76-14] Various impregnated metallic salts on magnetite have been prepared, including cobalt, nickel, copper, ruthenium, and palladium salts, as well as a bimetallic palladium-copper derivative. Impregnated ruthenium catalyst is... pH-Sensitive C-ON Bond Homolysis of Alkoxyamines of Imidazoline Series with Multiple Ionizable Groups As an Approach for Control of Nitroxide Mediated Polymerization [作者：EDELEVA MARIYA V; KIRILYUK IGOR A; ZHURKO IRINA F; PARKHOMENKO DMITRY A; TSENTALOVICH YURI P; BAGRYANSKAYA ELENA G,期刊：Journal of Organic Chemistry, 页码：5558-5573 , 文章类型： Article，,卷期：2011年76-14] Recently, a new concept of pH-switchable agents for reversible addition-fragmentation chain transfer (RAFT) polymerization has been introduced by Benaglia et al. (J. Am. Chem. Soc. 2009, 131, 6914-6915). In this paper we... Synthesis of 3-Guaninyl- and 3-Adeninyl-5-hydroxymethyl-2-pyrrolidinone Nucleosides [作者：SALEH ABDULLAH; DANGELO JOHN G; MORTON MARTHA D; QUINN JESSE; REDDEN KENDRA; MIELGUZ RAFAL W; PAVLIK CHRISTOPHER; SMITH MICHAEL B,期刊：Journal of Organic Chemistry, 页码：5574-5583 , 文章类型： Article，,卷期：2011年76-14] L- And D-glutamic acids, as well as trans-4-hydroxy-L-proline, are converted to the corresponding 3-guaninyl-5-hydroxymethyl-2-pyrrolidinone (4) or 3-adeninyl-5-hydroxymethyl-2-pyrrolidinone (5) nucleoside analog. The pr... Stepwise "Click" Chemistry for the Template Independent Construction of a Broad Variety of Cross-Linked Oligonucleotides: Influence of Linker Length, Position, and Linking Number on DNA Duplex Stability [作者：XIONG HAI; SEELA FRANK,期刊：Journal of Organic Chemistry, 页码：5584-5597 , 文章类型： Article，,卷期：2011年76-14] Cross-linked DNA was constructed by a "stepwise click" reaction using a bis-azide. The reaction is performed in the absence of a template, and a monofunctionalized oligonucleotide bearing an azido-function is formed as i... Unexpected Formation of (E)-4-Alkene 1,3-Diketones from the Three-Component Reaction of Lithium Selenolates with 1-(1-Alkynyl)cyclopropyl Ketones and Aldehydes [作者：XU JIANFENG; WU LULING; HUANG XIAN,期刊：Journal of Organic Chemistry, 页码：5598-5605 , 文章类型： Article，,卷期：2011年76-14] A novel three-component stereoselective synthesis of (E)-4-alkene 1,3-diketones from lithium selenolates, 1-(1-alkynyl)cyclopropyl ketones, and aldehydes is reported. This reaction afforded the products in moderate to go... Mechanistic Insights on N-Heterocyclic Carbene-Catalyzed Annulations: The Role of Base-Assisted Proton Transfers [作者：VERMA PRAGYA; PATNI PRIYA A; SUNOJ RAGHAVAN B,期刊：Journal of Organic Chemistry, 页码：5606-5613 , 文章类型： Article，,卷期：2011年76-14] The density functional theory investigation on the mechanism of NHC-catalyzed cycloannulation reaction of the homoenolate derived from butenal with pentenone is studied. The M06-2X/6-31+G** and B3LYP/6-31+G** levels of t... Synthesis and Characterization of Conformationally Preorganized, (R)-Diethylene Glycol-Containing gamma-Peptide Nucleic Acids with Superior Hybridization Properties and Water Solubility [作者：SAHU BICHISMITA; SACUI IULIA; RAPIREDDY SRINIVAS; ZANOTTI KIMBERLY J; BAHAL RAMAN; ARMITAGE BRUCE A; LY DANITH H,期刊：Journal of Organic Chemistry, 页码：5614-5627 , 文章类型： Article，,卷期：2011年76-14] Developed in the early 1990s, peptide nucleic acid (PNA) has emerged as a promising class of nucleic acid mimic because of its strong binding affinity and sequence selectivity toward DNA and RNA and resistance to enzymat... Donor-Substituted Diphenylacetylene Derivatives Act as Electron Donors and Acceptors [作者：ONITSCH CHRISTINE; ROSSPEINTNER ARNULF; ANGULO GONZALO; GRIESSER MARKUS; KIVALA MILAN; FRANK BRIAN; DIEDERICH FRANCOIS; GESCHEIDT GEORG,期刊：Journal of Organic Chemistry, 页码：5628-5635 , 文章类型： Article，,卷期：2011年76-14] Despite the predominant electron donor character of p-phenylenediamine, our studies on extended p-phenylenediamine derivatives show that they can not only be chemically oxidized, giving well-known Wurster-type radical ca... Naphthiporphyrins [作者：LASH TIMOTHY D; YOUNG ALEXANDRA M; RASMUSSEN JANE M; FERRENCE GREGORY M,期刊：Journal of Organic Chemistry, 页码：5636-5651 , 文章类型： Article，,卷期：2011年76-14] Benziporphyrins, cross-conjugated porphyrin analogues with a benzene ring in place of one of the usual pyrrole units, have varying degrees of macrocyclic aromaticity because the 6 pi electron arene needs to give up its a... Assembly of Homolinear alpha(1 -> 2)-Linked Nonamannoside on Ionic Liquid Support [作者：MA LING; SUN SHENG; MENG XIANGBAO; LI QING; LI SHUCHUN; LI ZHONGJUN,期刊：Journal of Organic Chemistry, 页码：5652-5660 , 文章类型： Article，,卷期：2011年76-14] An improved method for the synthesis of large and complex oligosaccharides on ionic liquid (IL) support was developed. A strategy to attach the acceptor on IL using a more stable ether linker was used to prevent undesira... Photoinduced Cyclization of 3-Acyl-2-halo-1-[(omega-phenylethynyl)alkyl]indoles to Azaheterocyclo[1,2,3-lm]-Fused Benzo[c]carbazoles [作者：LU SHENCI; WANG REN; YANG YI; LI YANG; SHI ZONGJUN; ZHANG WEI; TU ZHIFENG,期刊：Journal of Organic Chemistry, 页码：5661-5669 , 文章类型： Article，,卷期：2011年76-14] A one-pot synthesis of azaheterocyclo[1,2,3-lm]-fused benzo[c]carbazoles (2 and 3) has been developed by photocyclization of 3-acyl-2-halo-1-[(omega-phenylethynyl)alkyl] indoles (1) in good to excellent yields. All produ... Synthesis of 5-Iodopyrrolo[1,2-a]quinolines and Indolo[1,2-a]quinolines via Iodine-Mediated Electrophilic and Regioselective 6-endo-dig Ring Closure [作者：VERMA AKHILESH KUMAR; SHUKLA SATYA PRAKASH; SINGH JASPAL; RUSTAGI VINEETA,期刊：Journal of Organic Chemistry, 页码：5670-5684 , 文章类型： Article，,卷期：2011年76-14] The endo-cyclic ring closure of 1-(2-(substituted ethynyl)pheny1)-1H-pyrroles 3a-t and 1-(2-(substituted ethynyl)phenyl)-H-indole 4a-o mediated by Lewis acid (I(2)) under mild conditions afforded substituted 5-iodopyrrol...