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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56条记录   Synthesis and Antifungal Activity of (-)-(Z)-Dysidazirine. [作者：Skepper, Colin K.;Dalisay, Doralyn S.;Molinski, Tadeusz F.;,期刊：Organic Letters, 页码：5269-5271 , 文章类型： 研究论文，,卷期：2008年10-22] (Biomolecules and Their Synthetic Analogs) Section A short, flexible synthesis of the marine natural product shows significant antifungal activity across a panel of seven human pathogens, whereas the structural analog (-... Stereocontrolled Total Synthesis of Amphidinolide X via a Silicon-Tethered Metathesis Reaction. [作者：Rodriguez-Escrich, Carles;Urpi, Felix;Vilarrasa, Jaume;,期刊：Organic Letters, 页码：5191-5194 , 文章类型： 研究论文，,卷期：2008年10-22] Two esterifications and an RCM to create the challenging trisubstituted C12-C13 double bond were required in the total synthesis of amphidinolide X (I) reported here. Assembling the three fragments in this order, no RCM... Total Synthesis of Wasabidienones B1 and B via SIBX-Mediated Hydroxylative Phenol Dearomatization. [作者：Pouysegu, Laurent;Marguerit, Melanie;Gagnepain, Julien;Lyvinec, Gildas;Eatherton, Andrew J.;Quideau, Stephane;,期刊：Organic Letters, 页码：5211-5214 , 文章类型： 研究论文，,卷期：2008年10-22] The first total synthesis of the natural nondimerizing o-quinol (+)-wasabidienone B1 (I) was achieved from com. available 1,3,5-trimethoxybenzene. The key dearomatizing transformation was efficiently accomplished via a ... Carbonylative Cross-Coupling of ortho-Disubstituted Aryl Iodides. [作者：Convenient Synthesis of Sterically Hindered Aryl Ketones. O'Keefe, B. Michael;Simmons, Nicholas;Martin, Stephen F.;,期刊：Organic Letters, 页码：5301-5304 , 文章类型： 研究论文，,卷期：2008年10-22] A mild and general protocol for the carbonylative cross-coupling of sterically hindered ortho-disubstituted aryl iodides is reported. Carbonylative Suzuki-Miyaura couplings of a variety of aryl boronic acids provide an a... Regiocontrolled Addition of Arylboronic Acids to Allenes Using Palladium and Platinum Catalysts. [作者：Yoshida, Masahiro;Matsuda, Kennosuke;Shoji, Yasunobu;Gotou, Takahiro;Ihara, Masataka;Shishido, Kozo;,期刊：Organic Letters, 页码：5183-5186 , 文章类型： 研究论文，,卷期：2008年10-22] Studies about the regiocontrolled addn. of arylboronic acids to allenes using a palladium or a platinum catalyst have been described. The selectivity of the reaction can be altered by the choice of the metal reagent and... Manganese-Catalyzed Cross-Coupling Reaction between Aryl Grignard Reagents and Alkenyl Halides. [作者：Cahiez, Gerard;Gager, Olivier;Lecomte, Fabien;,期刊：Organic Letters, 页码：5255-5256 , 文章类型： 研究论文，,卷期：2008年10-22] 23, 27, 29 Aryl Grignard reagents react stereoselectively with alkenyl halides in the presence of manganese(II) chloride (10 mol%) to afford good yields of cross-coupling products. Cu(I)-Catalyzed Intramolecular C-C Coupling of Activated Methylene Compounds with Vinyl Halides: Efficient Synthesis of Functionalized Alkylidenecyclobutanes. [作者：Chen, Liqun;Shi, Min;Li, Chaozhong;,期刊：Organic Letters, 页码：5285-5288 , 文章类型： 研究论文，,卷期：2008年10-22] 2-(3-bromobut-3-enyl)malonates underwent efficient intramol. C-vinylation leading to the synthesis of functionalized alkylidenecyclobutanes. Competition expts. revealed that this four-membered ring closure is fundamenta... Ring opening of methylenecycloalkenes via the C-C bond cleavage. [作者：Necas, David;Kotora, Martin;,期刊：Organic Letters, 页码：5261-5263 , 文章类型： 研究论文，,卷期：2008年10-22] 3-Methylenecycloalkene-1,1-dicarboxylates underwent facile ring opening via the cleavage of the unactivated C-C bond to yield aliph. alkenes. The reaction (intramol. deallylation) was catalyzed by "Ni-H" species generat... Second Generation of Calix[6]aza-Cryptands: Synthesis of Heteroditopic Receptors for Organic Ion Pairs. [作者：Le Gac, Stephane;Menand, Mickael;Jabin, Ivan;,期刊：Organic Letters, 页码：5195-5198 , 文章类型： 研究论文，,卷期：2008年10-22] The efficient syntheses of calix[6]azacryptands decorated with anion-binding groups on the narrow rim have been achieved from an 1,3,5-tris-protected calix[6]hexaamine. These heteroditopic receptors can bind ammonium io... Photolabile Protection of 1,2- and 1,3-Diols with Salicylaldehyde Derivatives. [作者：Kostikov, Alexey P.;Popik, Vladimir V.;,期刊：Organic Letters, 页码：5277-5280 , 文章类型： 研究论文，,卷期：2008年10-22] 1,2- And 1,3-diols, including carbohydrates, can be readily caged as acetals of 5-methoxy- or 5-hydroxysalicylaldehydes. Irradn. of these acetals with 300 nm light results in their efficient (F = 0.2-0.3) cleavage, rege... Relative and absolute stereochemistry of quinadoline B, an inhibitor of lipid droplet synthesis in macrophages. [作者：Koyama, Nobuhiro;Inoue, Yusuke;Sekine, Masae;Hayakawa, Yoichi;Homma, Hiroshi;Oinmura, Satoshi;Tomoda, Hiroshi;,期刊：Organic Letters, 页码：5273-5276 , 文章类型： 研究论文，,卷期：2008年10-22] New fungal metabolites, designated quinadolines A (I) and B (II), were isolated from culture broth of Aspergillus sp. FKI-1746, and their structures were elucidated by NMR spectroscopy. The complete relative and abs. st... Carbocupration-Functionalization of Arynes: Rapid Access to Variably Ortho-Substituted ((E)-3-Phenylprop-1-enyl)silanes. [作者：Ganta, Ashok;Snowden, Timothy S.;,期刊：Organic Letters, 页码：5103-5106 , 文章类型： 研究论文，,卷期：2008年10-22] A consecutive three-component coupling reaction involving a Li bis[3-(prop-1-enyltrimethylsilyl)]cuprate, variably substituted ortho-arynes, and a selection of common electrophiles is described. For example, trimethyl(2-... Intermolecular Silacarbonyl Ylide Cycloadditions: A Direct Pathway to Oxasilacyclopentenes. [作者：Bourque, Laura E.;Woerpel, K. A.;,期刊：Organic Letters, 页码：5257-5260 , 文章类型： 研究论文，,卷期：2008年10-22] Silacarbonyl ylides, generated by metal-catalyzed silylene transfer to carbonyls, participate in formal intermol. 1,3-dipolar cycloaddn. reactions with carbonyl compds. and alkynes to form dioxasilacyclopentane acetals a... Cell-Permeable Esters of Diazeniumdiolate-Based Nitric Oxide Prodrugs. [作者：Chakrapani, Harinath;Maciag, Anna E.;Citro, Michael L.;Keefer, Larry K.;Saavedra, Joseph E.;,期刊：Organic Letters, 页码：5155-5158 , 文章类型： 研究论文，,卷期：2008年10-22] Although O2-(2,4-dinitrophenyl) derivs. of diazeniumdiolate-based nitric oxide (NO) prodrugs bearing a free carboxylic acid group were activated by glutathione to release NO, these compds. were poor sources of intracellu... Chemiluminescence Change of Polyphenol Dendrimers with Different Core Molecules. [作者：Agawa, Hiroki;Nakazono, Manabu;Nanbu, Shinkoh;Zaitsu, Kiyoshi;,期刊：Organic Letters, 页码：5171-5174 , 文章类型： 研究论文，,卷期：2008年10-22] Second generation polyphenol dendrimers (PDs) with different core mols. were synthesized, and their chemiluminescence (CL) was measured by oxidn. of PDs with H2O2 under alk. conditions. All of the PDs showed strong CL, ... Nucleophilic Addition of Potassium Alkynyltrifluoroborates to D-Glucal Mediated by BF3譕Et2: Highly Stereoselective Synthesis of a-C-glycosides. [作者：Vieira, Adriano S.;Fiorante, Pedro F.;Hough, Thomas L. S.;Ferreira, Fernando P.;Ludtke, Diogo S.;Stefani, Helio A.;,期刊：Organic Letters, 页码：5215-5218 , 文章类型： 研究论文，,卷期：2008年10-22] A convenient, mild and highly stereoselective method for C-glycosidation (alkynylation) of D-glucal with various potassium alkynyltrifluoroborates, mediated by BF3譕Et2 and involving oxonium intermediates, preferentially ...