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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113条记录   Concise, Stereocontrolled Synthesis of the Citrinadin B Core Architecture [作者：GUERRERO CARLOS A; SORENSEN ERIK J,期刊：Organic Letters, 页码：5164-5167 , 文章类型： Article，,卷期：2011年13-19] A concise, stereocontrolled synthesis of the citrinadin B core architecture from scalemic, readily available starting materials is disclosed. Highlights include ready access to both cyclic tryptophan tautomer and trans-2... Synthesis of alpha-S-Glycosphingolipids Based on Uronic Acids [作者：OREILLY CIARAN; MURPHY PAUL V,期刊：Organic Letters, 页码：5168-5171 , 文章类型： Article，,卷期：2011年13-19] The synthesis of S-glycosphingolipids based on uronic acids is described. These compounds are analogous to the highly immunostimulatory antigens isolated from the cell walls of bacteria of the Sphingomonas family. Key to... Catalytic Intermolecular Hetero-Dehydro-Diels-Alder Cycloadditions: Regio- and Diasteroselective Synthesis of 5,6-Dihydropyridin-2-ones [作者：MANUEL FERNANDEZGARCIA JESUS; FERNANDEZRODRIGUEZ MANUEL A; AGUILAR ENRIQUE,期刊：Organic Letters, 页码：5172-5175 , 文章类型： Article，,卷期：2011年13-19] A novel catalyzed intermolecular heterodehydro-Diels-Alder reaction between push pull 1,3-dien-5-ynes and aldimines or silylaldimines is reported. The sequence is promoted both by gold(I) or silver(I) catalysts and leads... Tandem Thiol Switch Synthesis of Peptide Thioesters via N-S Acyl Shift on Thiazolidine [作者：SHARMA ROHIT K; TAM JAMES P,期刊：Organic Letters, 页码：5176-5179 , 文章类型： Article，,卷期：2011年13-19] An efficient "thiol switch" approach for the synthesis of peptide thioesters via an acid-catalyzed N-S acyl shift and a thioester exchange reaction in tandem with concurrent removal of protecting groups is described. Thi... Suzuki-Miyaura Cross-Coupling of Heteroaryl Halides and Arylboronic Acids in Continuous Flow [作者：NOEL TIMOTHY; MUSACCHIO ANDREW J,期刊：Organic Letters, 页码：5180-5183 , 文章类型： Article，,卷期：2011年13-19] General continuous-flow conditions for the Suzuki-Miyaura cross-coupling of heteroaryl halides and (hetero)arylboronic acids have been developed. A wide range of heterobiaryl products is obtained in excellent yields (20 ... Enantioselective Synthesis of Sphingadienines and Aromatic Ceramide Analogs [作者：MORENO MARIA; MURRUZZU CATERINA; RIERA ANTONI,期刊：Organic Letters, 页码：5184-5187 , 文章类型： Article，,卷期：2011年13-19] A new approach to the synthesis of sphingoid bases has been developed. The strategy is based on Sonogashira coupling of a chiral acetylenic carbamate that can be prepared in enantiomerically enriched form from 2,3-epoxy-... Oxazolidine Synthesis by Complementary Stereospecific and Stereoconvergent Methods [作者：SHAGHAFI MICHAEL B; GROTE ROBIN E; JARVO ELIZABETH R,期刊：Organic Letters, 页码：5188-5191 , 文章类型： Article，,卷期：2011年13-19] Complementary stereospecific and stereoconvergent reactions for enantioselective synthesis of 1,3-oxazolidines are reported. In the presence of a rhodium catalyst, reaction of enantioenriched butadiene monoxide with aryl... Desymmetrization of Cyclohexadienones via Asymmetric Michael Reaction Catalyzed by Cinchonine-Derived Urea [作者：GU QING; YOU SHULI,期刊：Organic Letters, 页码：5192-5195 , 文章类型： Article，,卷期：2011年13-19] Desymmetrization of cyclohexadienones bearing a bisphenylsulfonyl methylene group via asymmetric Michael reaction catalyzed by cinchonine-derived urea was realized to afford a series of highly enantioenriched polycyclic ... Efficient Assembly of Chromone Skeleton from 2,3-Allenoic Acids and Benzynes [作者：CHAI GUOBI; QIU YOUAI; FU CHUNLING; MA SHENGMING,期刊：Organic Letters, 页码：5196-5199 , 文章类型： Article，,卷期：2011年13-19] Chromone derivatives were synthesized from 2,3-allenoic acids and benzynes in moderate to excellent yields under mild conditions. Instead of the cyclic conjugate addition of the intermediate A formed by the nucleophilic ... Palladium-Catalyzed Approach to Stereodefined Ten-Membered Cycles from 1,5-Bisallenes [作者：CHENG JIAJIA; JIANG XUEFENG; MA SHENGMING,期刊：Organic Letters, 页码：5200-5203 , 文章类型： Article，,卷期：2011年13-19] A three-component Pd(0)-catalyzed reaction of 1,5-bisallenes with organic halides in the presence of primary amines was observed to afford stereodefined not readily available ten-membered cyclic compounds highly chemo- a... Efficient Copper-Catalyzed S-Vinylation of Thiols with Vinyl Halides [作者：KAO HSINLUN; LEE CHINFA,期刊：Organic Letters, 页码：5204-5207 , 文章类型： Article，,卷期：2011年13-19] The synthesis of vinyl sulfides through the coupling reaction of thiols with vinyl iodides, bromides, and chlorides is described. The thiols can couple with aryl iodides in the presence of only 0.5 mol % Cu(2)O without t... Synthesis of Isomerically Pure anti-Anthradithiophene Derivatives [作者：TYLLEMAN BENOIT; VANDE VELDE CHRISTOPHE M L; BALANDIER JEANYVES; STAS SARA; SERGEYEV SERGEY; GEERTS YVES HENRI,期刊：Organic Letters, 页码：5208-5211 , 文章类型： Article，,卷期：2011年13-19] The regiospecific total synthesis and characterization of anti-isomers of 2,8-dialkylanthradithiophenes are described. The "anti" structure of the ADT derivatives is demonstrated by (13)C NMR as well as single crystal X-... Organocatalytic Asymmetric Intermolecular Dehydrogenative alpha-Alkylation of Aldehydes Using Molecular Oxygen as Oxidant [作者：ZHANG BO; XIANG SHIKAI; ZHANG LIHE; CUI YUXIN; JIAO NING,期刊：Organic Letters, 页码：5212-5215 , 文章类型： Article，,卷期：2011年13-19] An organocatalytic enantioselective intermolecular oxidative dehydrogenative alpha-alkylation of aldehydes via benzylic C-H bond activation has been developed. The asymmetric reaction is smoothly fulfilled by using simpl... Regiospecific, Enantiospecific Total Synthesis of C-19 Methyl Substituted Sarpagine Alkaloids Dihydroperaksine-17-al and Dihydroperaksine [作者：EDWANKAR RAHUL V; EDWANKAR CHITRA R; DESCHAMPS JEFFREY; COOK JAMES M,期刊：Organic Letters, 页码：5216-5219 , 文章类型： Article，,卷期：2011年13-19] The optically active tetracyclic ketone 8 was converted into the pentacylic core 14 of the C-19 methyl substituted N(a)-H sarpagine and ajmaline alkaloids via a critical haloboration reaction. The ketone 14 was then empl... A Novel Iodide-Catalyzed Reduction of Nitroarenes and Aryl Ketones with H(3)PO(2) or H(3)PO(3): Its Application to the Synthesis of a Potential Anticancer Agent [作者：WU GEORGE G; CHEN FRANK X; LAFRANCE DANNY; LIU ZHIJIAN; GREENE SCOTT G; WONG YEESHING; XIE JI,期刊：Organic Letters, 页码：5220-5223 , 文章类型： Article，,卷期：2011年13-19] A novel iodide-catalyzed reduction method using hypophosphorous and/or phosphorus acids was developed to reduce both diaryl ketones and nitroarenes chemoselectively in the presence of chloro and bromo substituents in hig... Ligand-Free Copper-Catalyzed Regioselective C-2 Arylation of Imidazo[2,1-b]thiazoles [作者：HUANG GUOLI; SUN HONGSHENG; QIU XIAOJIE; JIN CAN; LIN CHEN; SHEN YINGZHONG; JIANG JULI; WANG LEYONG,期刊：Organic Letters, 页码：5224-5227 , 文章类型： Article，,卷期：2011年13-19] An effective, regioselective C-2 arylation of imidazo[2,1-b]thiazoles catalyzed by Cu(I) has been developed. This arylation proceeded smoothly without promotion of the ligands, and various functional (22 samples) groups ...