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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97条记录   Exploration of the molecular origin of the azinomycin epoxide: Timing of the biosynthesis revealed. [作者：Sharma, Vasudha;Kelly, Gilbert T.;Watanabe, Coran M. H.;,期刊：Organic Letters, 页码：4815-4818 , 文章类型： 研究论文，,卷期：2008年10-21] Streptomyces sahachiroi whole cell feeding expts., utilizing putative precursors labeled with stable isotopes, established that the epoxide unit of the DNA crosslinked agents, azinomycin A and B, proceeds via a valine-de... Premalbrancheamide: Synthesis, Isotopic Labeling, Biosynthetic Incorporation, and Detection in Cultures of Malbranchea aurantiaca. [作者：Ding, Yousong;Greshock, Thomas J.;Miller, Kenneth A.;Sherman, David H.;Williams, Robert M.;,期刊：Organic Letters, 页码：4863-4866 , 文章类型： 研究论文，,卷期：2008年10-21] An advanced metabolite, named premalbrancheamide, involved in the biosynthesis of malbrancheamide (1) and malbrancheamide B (2) has been synthesized in double 13C-labeled form and was incorporated into the indole alkaloi... Biosynthesis of Baccharis Oxide, a Triterpene with a 3,10-Oxide Bridge in the A-Ring. [作者：Shibuya, Masaaki;Sagara, Aya;Saitoh, Ai;Kushiro, Tetsuo;Ebizuka, Yutaka;,期刊：Organic Letters, 页码：5071-5074 , 文章类型： 研究论文，,卷期：2008年10-21] of Stevia rebaudiana. Functional expression in yeast and spectral analyses of the products established that the obtained OSC yields baccharis oxide as the major product. This is the first identification of an OSC yield... Ratiometric Sensing of Hg2+ Based on the Calix[4]arene of Partial Cone Conformation Possessing a Dansyl Moiety. [作者：Dhir, Abhimanew;Bhalla, Vandana;Kumar, Manoj;,期刊：Organic Letters, 页码：4891-4894 , 文章类型： 研究论文，,卷期：2008年10-21] A new fluorescent chemosensor based on the calix[4]arene of partial cone conformation possessing a dansyl moiety was synthesized. The chemosensor demonstrates selective optical recognition of Hg2+ and Cu2+ in two contra... First Triazole-Linked Porphyrin-Fullerene Dyads. [作者：Fazio, Michael A.;Lee, Olivia P.;Schuster, David I.;,期刊：Organic Letters, 页码：4979-4982 , 文章类型： 研究论文，,卷期：2008年10-21] A general procedure for the synthesis of 1,2,3-triazole-linked porphyrin-fullerene dyads (I, II; Ar = 3,5-di-tert-butylphenyl) is described. The synthesis involves the prepn. of zinc porphyrins with a meso-appended [(for... Synthesis of 5- and 6-carboxy-X-rhodamines. [作者：Uddin, Md. Jashim;Marnett, Lawrence J.;,期刊：Organic Letters, 页码：4799-4801 , 文章类型： 研究论文，,卷期：2008年10-21] Fluorescent Brighteners, and Photographic Sensitizers) Section An efficient route is reported to 5- and 6-carboxy-X-rhodamines that contain multiple n-propylene or g,g-dimethylpropylene groups bridging terminal nitrogen ... Regioselective Protection of Sugars Catalyzed by Dimethyltin Dichloride. [作者：Demizu, Yosuke;Kubo, Yuki;Miyoshi, Hiroko;Maki, Toshihide;Matsumura, Yoshihiro;Moriyama, Noriaki;Onomura, Osamu;,期刊：Organic Letters, 页码：5075-5077 , 文章类型： 研究论文，,卷期：2008年10-21] has been developed. Highly regioselective protection was accomplished along with high chem. yield. The regioselectivity of the benzoylation was realized as an intrinsic character of sugars based on a stereorelationship... Iron-Mediated Intramolecular Metalative Cyclization of a,b-Unsaturated Esters and Amides. Versatile One-Pot Preparation of Bicyclic Ketoesters. [作者：Hata, Takeshi;Hirone, Naoki;Sujaku, Shiro;Nakano, Kirihiro;Urabe, Hirokazu;,期刊：Organic Letters, 页码：5031-5033 , 文章类型： 研究论文，,卷期：2008年10-21] 2-Nonen-7-ynedioic or 2-decen-8-ynedioic acid derivs. were treated with an iron reagent generated from FeCl2 and t-BuMgCl in a ratio of 1:4 to give cyclized products after hydrolysis, deuteriolysis, or the addn. of carbo... Linking Homogeneous and Heterogeneous Enantioselective Catalysis through a Self-Assembled Coordination Polymer. [作者：Garcia, Jose I.;Lopez-Sanchez, Beatriz;Mayoral, Jose A.;,期刊：Organic Letters, 页码：4995-4998 , 文章类型： 研究论文，,卷期：2008年10-21] enantioselective catalysis is possible through self-supported copper coordination polymers, based on a new kind of ditopic chiral ligand bearing two azabis(oxazoline) moieties. When the coordination polymer is used to c... A New One-Pot, Four-Component Synthesis of 1,2-Amino Alcohols: TiCl3/t-BuOOH-Mediated Radical Hydroxymethylation of Imines. [作者：Clerici, Angelo;Ghilardi, Alessandra;Pastori, Nadia;Punta, Carlo;Porta, Ombretta;,期刊：Organic Letters, 页码：5063-5066 , 文章类型： 研究论文，,卷期：2008年10-21] An amine, an aldehyde, and methanol can be readily assembled in one pot under very mild conditions through a free-radical multicomponent reaction by using an aq. acidic TiCl3/t-BuOOH system to afford 1,2-amino alcs. in f... Studies on the Stereoselective Synthesis of C-Allyl Glycosides. [作者：McGarvey, Glenn J.;LeClair, Christopher A.;Schmidtmann, Bahar A.;,期刊：Organic Letters, 页码：4727-4730 , 文章类型： 研究论文，,卷期：2008年10-21] An investigation was carried out to explore the use of sulfoxide donors as common precursors to stereoisomeric C-glycoconjugates of glycoprotein and glycolipid tumor antigens. A study focusing on the effects of reaction... Is Donor-Acceptor Hydrogen Bonding Necessary for 4,6-O-Benzylidene-directed b-Mannopyranosylation? Stereoselective Synthesis of b-C-Mannopyranosides and a-C-Glucopyranosides. [作者：Crich, David;Sharma, Indrajeet;,期刊：Organic Letters, 页码：4731-4734 , 文章类型： 研究论文，,卷期：2008年10-21] 2,3-Di-O-benzyl-4,6-O-benzylidene-thiohexopyranosides, on activation with 1-benzenesulfinyl piperidine and triflic anhydride, react with allyl silanes and stannanes, and with silyl enolethers to give C-glycosides. In the... Versatile Synthesis of Head Group Functionalized Phospholipids via Oxime Bond Formation. [作者：Furuta, Takumi;Mochizuki, Masayoshi;Ito, Mai;Takahashi, Tadanobu;Suzuki, Takashi;Kan, Toshiyuki;,期刊：Organic Letters, 页码：4847-4850 , 文章类型： 研究论文，,卷期：2008年10-21] frameworks via oxime bond formation has been developed for the synthesis of cyclen-Cu(II), pyrene, naphthalene, and other headgroup functionalized phospholipids that can cleave the membrane protein, hemagglutinin. Total Synthesis of (?-Calcaridine A and (?-epi-Calcaridine A. [作者：Koswatta, Panduka B.;Sivappa, Rasapalli;Dias, H. V. Rasika;Lovely, Carl J.;,期刊：Organic Letters, 页码：5055-5058 , 文章类型： 研究论文，,卷期：2008年10-21] The first total synthesis of the Leucetta alkaloid calcaridine A (I) is described based on a biosynthetic postulate. Application of an oxidative rearrangement of a 4,5-disubstituted imidazole leads to the formation of b... Colorimetric Test Kit for Cu2+ Detection. [作者：Sheng, Ruilong;Wang, Pengfei;Gao, Yunhua;Wu, Yan;Liu, Weimin;Ma, Jingjin;Li, Huaping;Wu, Shikang;,期刊：Organic Letters, 页码：5015-5018 , 文章类型： 研究论文，,卷期：2008年10-21] A coumarin-based colorimetric chemosensor was designed and synthesized. It exhibits good sensitivity and selectivity for the copper cation over other cations such as Zn2+, Cd2+, Pb2+, Co2+, Fe2+, Ni2+, Ag+, and alkali a... Chemoselective Oxygen-Centered Radical Cyclizations onto Silyl Enol Ethers. [作者：Zlotorzynska, Maria;Zhai, Huimin;Sammis, Glenn M.;,期刊：Organic Letters, 页码：5083-5086 , 文章类型： 研究论文，,卷期：2008年10-21] A new O-centered radical cyclization onto silyl enol ethers was developed and used for the synthesis of versatile siloxy-substituted tetrahydrofurans. E.g., reaction of (Z)-2-(5-(tert-butyldimethylsilyloxy)pent-4-enylox...