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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62条记录   A Novel One-Pot Approach of Hexahydropyrrolo[2,3-b]indole Nucleus by a cascade addition/cyclization strategy: Synthesis of (+/-)-Esermethole [作者：LUCARINI SIMONE; BARTOCCINI FRANCESCA; BATTISTONI FLAVIA; DIAMANTINI GIUSEPPE; PIERSANTI GIOVANNI; RIGHI MARIKA; SPADONI GILBERTO,期刊：Organic Letters, 页码：3844-3847 , 文章类型： Article，,卷期：2010年12-17] A practical and efficient synthesis of 3-substituted hexahydropyrrolo[2,3-b]indole is described. The addition/cyclization of 3-substituted indoles with alpha,beta-dehydroamino esters in the presence of a Lewis acid provi... An Efficient Approach to Functionalized Benzo[a]xanthones through Reactions of 2-Methyl-3-(1-alkynyl)chromones with Electron-Deficient Chromone-Fused Dienes [作者：GONG JIAN; XIE FUCHUN; CHEN HONG; HU YOUHONG,期刊：Organic Letters, 页码：3848-3851 , 文章类型： Article，,卷期：2010年12-17] An efficient tandem process was developed to synthesize diversified benzo[a]xanthones from 2-methyl-3-(1-alkynyl)chromones with electron-deficient chromone-fused dienes. This unusual reaction, involving multiple steps an... Naphthalimide Modified Rhodamine Derivative: Ratiometric and Selective Fluorescent Sensor for Cu2+ Based on Two Different Approaches [作者：ZHANG JUN FENG; ZHOU YING; YOON JUYOUNG; KIM YOUNGMEE; KIM SUNG JIN; KIM JONG SEUNG,期刊：Organic Letters, 页码：3852-3855 , 文章类型： Article，,卷期：2010年12-17] A new rhodamine-based derivative bearing a 1,8-naphthalimide group (1) was synthesized as a dual-mode Cu2+-selective sensor via the rhodamine ring-opening approach and ratiometric displacement. A colorimetric and "off on... Double Diastereoselective, Nucleophile-Catalyzed Aldol Lactonizations (NCAL) Leading to beta-Lactone Fused Carbocycles and Extensions to beta-Lactone Fused Tetrahydrofurans [作者：MORRIS KAY A; ARENDT KEVIN M; OH SEONG HO; ROMO DANIEL,期刊：Organic Letters, 页码：3764-3767 , 文章类型： Article，,卷期：2010年12-17] A double diastereoselective variant of the nucleophile-catalyzed aldol lactonization (NCAL) process is described. This strategy delivers beta-lactone-fused carbocycles with good to excellent diastereoselectivities using ... Phosphine-Catalyzed Domino Reaction: Highly Stereoselective Synthesis of trans-2,3-Dihydrobenzofurans from Salicyl N-Thiophosphinyl Imines and Allylic Carbonates [作者：XIE PEIZHONG; HUANG YOU; CHEN RUYU,期刊：Organic Letters, 页码：3768-3771 , 文章类型： Article，,卷期：2010年12-17] A novel phosphine-catalyzed domino reaction of salicyl N-thiophosphinyl imines and allylic carbonates was developed. The allylic carbonate, in this reaction, serves as a new kind of 1,1-dipolar synthon. This method offer... Resolution of 2,2-Disubstituted Epoxides via Biocatalytic Azidolysis [作者：MOLINARO CARMELA; GUILBAULT AUDREYANNE; KOSJEK BIRGIT,期刊：Organic Letters, 页码：3772-3775 , 文章类型： Article，,卷期：2010年12-17] A practical procedure for the enzymatic resolution of 2-alkyl-2-aryl-disubstituted epoxides using the Codex HHDH P2E2 enzyme and sodium azide is reported. This method allowed the synthesis of novel regio- and enantiosele... Preparation of Translationally Competent tRNA by Direct Chemical Acylation [作者：DUFFY NOAH H; DOUGHERTY DENNIS A,期刊：Organic Letters, 页码：3776-3779 , 文章类型： Article，,卷期：2010年12-17] Nonsense codon suppression for unnatural amino acid incorporation requires the preparation of a suppressor aminoacyl-tRNA. Chemical acylation strategies are general but inefficient and arduous. A recent report (J. Am. Ch... Copper-Catalyzed Ficini [2+2] Cycloaddition of Ynamides [作者：LI HONGYAN; HSUNG RICHARD P; DEKORVER KYLE A; WEI YONGGANG,期刊：Organic Letters, 页码：3780-3783 , 文章类型： Article，,卷期：2010年12-17] The Ficini [2 + 2] cycloaddition using N-sulfonyl-substituted ynamides is described, featuring the utility of CuCl2 and AgSbF6 as catalysts. This work represents the first successful example of ynamides participating in ... Stereoselective Spirolactam Synthesis via Palladium Catalyzed Arylative Allene Carbocyclization Cascades [作者：LI MEILING; DIXON DARREN J,期刊：Organic Letters, 页码：3784-3787 , 文章类型： Article，,卷期：2010年12-17] A diastereoselective arylative carbocyclization of pro-nucleophile-linked allenes with aryl and heteroaryl halides to provide spirocyclic lactam products with moderate to high diastereoselectivities and good yields under... Highly Diastereo- and Enantioselective Synthesis of Monodifferentiated syn-1,2-Diol Derivatives through Asymmetric Transfer Hydrogenation via Dynamic Kinetic Resolution [作者：CARTIGNY DAMIEN; PUENTENER KURT; AYAD TAHAR; SCALONE MICHELANGELO; RATOVELOMANANAVIDAL VIRGINIE,期刊：Organic Letters, 页码：3788-3791 , 文章类型： Article，,卷期：2010年12-17] The first enantio- and diastereoselective approach to alpha-alkoxy-substituted syn-beta-hydroxyesters through highly efficient catalytic asymmetric transfer hydrogenation via dynamic kinetic resolution reactions from the... Synthesis, Structure Determination, and Biological Evaluation of Destruxin E [作者：YOSHIDA MASAHITO; TAKEUCHI HISAYUKI; ISHIDA YOSHITAKA; YASHIRODA YOKO; YOSHIDA MINORU; TAKAGI MOTOKI; SHINYA KAZUO; DOI TAKAYUKI,期刊：Organic Letters, 页码：3792-3795 , 文章类型： Article，,卷期：2010年12-17] The total synthesis of destruxin E (1) has been achieved for the first time, and the stereochemistry of its chiral center at the epoxide has been determined to be (S). The cyclization precursor 3a was synthesized by soli... Allylation of Nitrosobenzene with Pinacol Allylboronates. A Regioselective Complement to Peroxide Oxidation [作者：KYNE ROBERT E; RYAN MICHAEL C; KLIMAN LAURA T; MORKEN JAMES P,期刊：Organic Letters, 页码：3796-3799 , 文章类型： Article，,卷期：2010年12-17] Addition of nitrosobenzene to pinacol allylboronates leads to oxidation of the organoboron with concomitant rearrangement of the substrate alkene. This reaction appears to proceed by allylboration of the nitroso group in... Lucknolides A and B, Tricyclic Ketal-lactone Metabolites from a Terrestrial Streptomyces sp [作者：YADAV PREM P; NAIR VIMAL; DITTRICH BIRGER; SCHUEFFLER ANJA; LAATSCH HARTMUT,期刊：Organic Letters, 页码：3800-3803 , 文章类型： Article，,卷期：2010年12-17] In a screening of micro-organisms for new secondary metabolites, two unprecedented tricyclic highly functionalized ketal-lactone metabolites, named lucknolide A (1) and lucknolide B (2), have been isolated, and the compo... Metal-Free Regioselective Oxidative Biaryl Coupling Leading to Head-to-Tail Bithiophenes: Reactivity Switching, a Concept Based on the Iodonium(III) Intermediate [作者：MORIMOTO KOJI; YAMAOKA NOBUTAKA; OGAWA CHIEKO; NAKAE TOMOFUMI; FUJIOKA HIROMICHI; DOHI TOSHIFUMI; KITA YASUYUKI,期刊：Organic Letters, 页码：3804-3807 , 文章类型： Article，,卷期：2010年12-17] A new synthetic concept for obtaining unsymmetrical biaryl coupling products by an oxidative method is reported. Our synthetic strategy casts light on the reaction intermediate for switching the reactivity of 3-substitut...