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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66条记录   An Efficient Intramolecular 1,3-Dipolar Cycloaddition Involving 2-(1,2-Dichlorovinyloxy)aryldiazomethanes: A One-Pot Synthesis of Benzofuropyrazoles from Salicylaldehydes. [作者：Sales, Zachary S.;Mani, Neelakandha S.;,期刊：Journal of Organic Chemistry, 页码：891-894 , 文章类型： 研究论文，,卷期：2009年74-2] A novel intramol. 1,3-dipolar cycloaddn. strategy for a rapid entry into benzofuropyrazoles is described. In a three-step sequence, (E)-2-(1,2-dichlorovinyloxy)aryldiazomethanes were generated in situ from the correspon... Magnesiation of Pyridine N-Oxides via Iodine or Bromine-Magnesium Exchange: A Useful Tool for Functionalizing Pyridine N-Oxides. [作者：Duan, Xin-Fang;Ma, Zi-Qian;Zhang, Fang;Zhang, Zhan-Bin;,期刊：Journal of Organic Chemistry, 页码：939-942 , 文章类型： 研究论文，,卷期：2009年74-2] Iodo- or 2-bromopyridine N-oxides were readily magnesiated with i-PrMgCl譒iCl via the iodine or bromine-magnesium exchange. The bromine adjacent to pyridine N-oxide (at the 2- or 6-position) can be regioselectively magne... An efficient Ullmann-type C-O bond formation catalyzed by an air-stable copper(I)-bipyridyl complex. [作者：Niu, Jiajia;Zhou, Hua;Li, Zhigang;Xu, Jingwei;Hu, Shaojing;,期刊：Journal of Organic Chemistry, 页码：950-950 , 文章类型： 研究论文，,卷期：2009年74-2] On page 7814, Ref. 5g is incorrect. Ref. 5g should read: "(g) Cristau, H.J.; Cellier, P.P.; Hamada, S.; Spindler, J.F.; Taillerfer, M. Org. Lett. 2004, 6, 913-916.". On page 7814, Refs. 5n and 5o were omitted; the corr... Iron(III) Chloride Catalyzed Oxidative Coupling of Aromatic Nuclei. [作者：Wang, Kailiang;Lu, Maoyun;Yu, Ao;Zhu, Xiaoqing;Wang, Qingmin;,期刊：Journal of Organic Chemistry, 页码：935-938 , 文章类型： 研究论文，,卷期：2009年74-2] Easily available and nontoxic FeCl3 catalyzes intramol. oxidative coupling for the direct construction of the phenanthrene ring using m-chloroperbenzoic acid as sole oxidant at room temp. in excellent yields. The mechan... Synthesis of Isopeptide Epoxide Peptidomimetics. [作者：Majumdar, Debatosh;Alexander, Matthew D.;Coward, James K.;,期刊：Journal of Organic Chemistry, 页码：617-627 , 文章类型： 研究论文，,卷期：2009年74-2] Two epoxide-contg. peptidomimetics I and II of the isopeptide glutamyl-g-glutamate have been synthesized via a route that should be generally applicable to the synthesis of isopeptide analogs in which an oxirane replaces... Synthesis and Biological Evaluation of a Chitobiose-Based Peptide N-Glycanase Inhibitor Library. [作者：Witte, Martin D.;Horst, Danielle;Wiertz, Emmanuel J. H. J.;van der Marel, Gijsbert A.;Overkleeft, Herman S.;,期刊：Journal of Organic Chemistry, 页码：605-616 , 文章类型： 研究论文，,卷期：2009年74-2] Peptide N-glycanase (PNGase), the enzyme responsible for the deglycosylation of N-linked glycoproteins, has an active site related to that of cysteine proteases. Chitobiose was equipped with electrophilic traps often us... One-Step Synthesis of Pyrido[1,2-a]benzimidazole Derivatives by a Novel Multicomponent Reaction of Chloroacetonitrile, Malononitrile, Aromatic Aldehyde, and Pyridine. [作者：Yan, Chao Guo;Wang, Qi Fang;Song, Xiao Kai;Sun, Jing;,期刊：Journal of Organic Chemistry, 页码：710-718 , 文章类型： 研究论文，,卷期：2009年74-2] Polysubstituted pyrido[1,2-a]benzimidazole derivs., e.g. I, are efficiently produced in moderate yields in a novel one-pot, four-component reaction from pyridine or 3-picoline, chloroacetonitrile, malononitrile, and arom... Conformation of Oligocholate Foldamers with 4-Aminobutyroyl Spacers. [作者：Zhao, Yan;,期刊：Journal of Organic Chemistry, 页码：834-843 , 文章类型： 研究论文，,卷期：2009年74-2] Extended oligocholates with 4-aminobutyroyl groups in between the cholate units were labeled with a naphthyl and a dansyl at the chain ends. Fluorescence resonance energy transfer (FRET) from the naphthyl to the dansyl ... Allylic Oxidations Catalyzed by Dirhodium Caprolactamate via Aqueous tert-Butyl Hydroperoxide: The Role of the tert-Butylperoxy Radical. [作者：McLaughlin, Emily C.;Choi, Hojae;Wang, Kan;Chiou, Grace;Doyle, Michael P.;,期刊：Journal of Organic Chemistry, 页码：730-738 , 文章类型： 研究论文，,卷期：2009年74-2] Dirhodium(II) caprolactamate exhibits optimal efficiency for the prodn. of the tert-butylperoxy radical, which is a selective reagent for hydrogen atom abstraction. These oxidn. reactions occur with aq. tert-Bu hydroper... One-Pot Conversion of Thebaine to Hydrocodone and Synthesis of Neopinone Ketal. [作者：Carroll, Robert J.;Leisch, Hannes;Rochon, Lena;Hudlicky, Tomas;Cox, D. Phillip;,期刊：Journal of Organic Chemistry, 页码：747-752 , 文章类型： 研究论文，,卷期：2009年74-2] The ethylene glycol ketal I (R6aR6b = OCH2CH2O, R7 = H, R8R14 = bond) of neopinone was prepd. in a one-pot procedure by the reaction of thebaine (R6a = OMe, R6bR7 = bond, R8R14 = bond) with ethylene glycol in the presenc... Versatile Synthesis of the C3-C14 Domain of 7-Deoxyokadaic Acid. [作者：Trygstad, Timothy M.;Pang, Yucheng;Forsyth, Craig J.;,期刊：Journal of Organic Chemistry, 页码：910-913 , 文章类型： 研究论文，,卷期：2009年74-2] Described is a flexible synthesis of the C3-C14 domain of 7-deoxyokadaic acid that is amenable to facile structural diversification. Treatment of ynone I under acidic conditions led to net bis-conjugate addn. of the lat... Concise Syntheses of (+)-Macrosphelides A and B: Studies on the Macro-Ring Closure Strategy. [作者：Paek, Seung-Mann;Yun, Hwayoung;Kim, Nam-Jung;Jung, Jong-Wha;Chang, Dong-Jo;Lee, Sujin;Yoo, Jakyung;Park, Hyun-Ju;Suh, Young-Ger;,期刊：Journal of Organic Chemistry, 页码：554-561 , 文章类型： 研究论文，,卷期：2009年74-2] Highly concise syntheses of (+)-macrosphelides A and B I (R = OH, R1 = H; RR1 = O, resp.) were accomplished in this study. The key feature of our synthetic route involved the direct three-carbon homologation of the read... Asymmetric Synthesis of the ABC-Ring System of the Antitumor Antibiotic MPC1001. [作者：Peng, Jianbiao;Clive, Derrick L. J.;,期刊：Journal of Organic Chemistry, 页码：513-519 , 文章类型： 研究论文，,卷期：2009年74-2] Trans-4-Hydroxy-L-proline was converted into a tricyclic compd. (I) representing three contiguous rings of the anticancer antibiotic MPC1001. The tricyclic model contains the dihydrooxepin and diketopiperazine subunits,... Remarkable Features of the McMurry Reaction Conditions in Dimerization of Formyl- and 2-Formylvinylpurpurinimides. [作者：Electrochemistry of Monomeric Ni(II) Purpurinimide and the;,期刊：Journal of Organic Chemistry, 页码：568-579 , 文章类型： 研究论文，,卷期：2009年74-2] To study the electrochem. properties of purpurinimide dyads and electron transfer sites for their redn. and oxidn., dimers with variable C-C linkages were synthesized. For the prepn. of these novel structures, the formy... Nonracemizable Isocyanoacetates for Multicomponent Reactions. [作者：Zhdanko, Alexander G.;Nenajdenko, Valentine G.;,期刊：Journal of Organic Chemistry, 页码：884-887 , 文章类型： 研究论文，,卷期：2009年74-2] Chiral ortho esters of a-isocyano acids were synthesized from com. available Cbz-protected a-amino acids. These compds. are stable toward racemization in the Ugi 4CC in contrast to known esters of a-isocyano acids. App... Syntheses of Heterocyclic Ethenyl C-Nucleosides for Recognition of Inverted Base Pairs within the DNA Triple Helix by Stereoselective Intramolecular Cyclization and Olefin Metathesis. [作者：Rothman, Jeffrey H.;,期刊：Journal of Organic Chemistry, 页码：925-928 , 文章类型： 研究论文，,卷期：2009年74-2] Canonical recognition of gene sequences would allow precise means for specific genetic intervention. Unfortunately, specific recognition of two of the four possible base pairs by triplex-forming oligonucleotide (TFO) as...