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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71条记录   FORMAL SYNTHESIS OF (+/-)-CLAUSENAMIDE BY NHC-CATALYZED gamma-LACTAM FORMATION [作者：HE MING; ROMMEL MICHAEL; BODE JEFFREY W,期刊：Heterocycles, 页码：1689-1696 , 文章类型： Article，,卷期：2012年86-2] (+/-)-Clausenamide is a biologically active gamma-lactam isolated as a racemic mixture from Clausena lansium. Reported medicinal properties include hepatoprotective effects as well as neuroprotective and nootropic activi... CROSS-COUPLING REACTIONS FOR THE SYNTHESIS OF C-GLYCOSIDES AND RELATED COMPOUNDS [作者：MERINO PEDRO; TEJERO TOMAS; MARCA EDUARDO; GOMOLLONBEL FERNANDO; DELSO IGNACIO; MATUTE ROSA,期刊：Heterocycles, 页码：791-820 , 文章类型： Review，,卷期：2012年86-2] Cross-coupling reactions provide versatile strategies for preparing hydrolytically stable C-glycosides and C-nucleoside analogues, which are of interest in the search for new biologically active molecules. Several types ... ASYMMETRIC REACTIONS OF A SERIES OF AROMATIC AZINES WITH NUCLEOPHILES [作者：EGOROV ILYA N; TSEITLER TATYANA A; ZYRYANOV GRIGORY V; RUSINOV VLADIMIR L; CHUPAKHIN OLEG N,期刊：Heterocycles, 页码：821-889 , 文章类型： Review，,卷期：2012年86-2] Current review is devoted to the reactions of nucleophilic addition in azine series, leading to the stereoselective formation of optically active products. Three types of reactions are reviewed: the reactions of achiral ... DISTRIBUTION OF CYCLIC AND ACYCLIC BIS-BIBENZYLS IN THE MARCHANTIOPHYTA (LIVERWORTS), FERNS AND HIGHER PLANTS AND THEIR BIOLOGICAL ACTIVITIES, BIOSYNTHESIS, AND TOTAL SYNTHESIS [作者：ASAKAWA YOSHINORI; LUDWICZUK AGNIESZKA,期刊：Heterocycles, 页码：891-917 , 文章类型： Review，,卷期：2012年86-2] The Marchantiophyta (liverworts) are rich sources of cyclic and acyclic bis-bibenzyls which are very rare natural products in the plant kingdom. At present more than 70 of bis-bibenzyls have been found in liverworts. The... SCANDIUM TRIFLATE-CATALYZED D-FRUCTOFURANOSYLATION REACTIONS USING DISACCHARIDE UNITS [作者：YAMANOI TAKASHI; MISAWA NORIKO; MATSUDA SHO; WATANABE MIKIO; ODA YOSHIKI,期刊：Heterocycles, 页码：919-925 , 文章类型： Article，,卷期：2012年86-2] This paper describes efficient D-fructofuranosylation reactions catalyzed by scandium triflate. The reactions used several benzoylated or benzylated glycosyl acylate derivatives from disaccharides containing the D-fructo... SELECTIVE CROSS-DEHYDROGENATIVE COUPLING OF N-PHENYLTETRAHYDROISOQUINOLINES IN AQUEOUS MEDIA USING POLY(ANILINE SULFONIC ACID)/GOLD NANOPARTICLES [作者：AMAYA TORU; ITO TSUBASA; HIRAO TOSHIKAZU,期刊：Heterocycles, 页码：927-932 , 文章类型： Article，,卷期：2012年86-2] Selective cross-dehydrogenative coupling of N-phenyltetrahydroisoquinoline with carbon nucleophiles such as dimethyl malonate, ethyl acetoacetate, and nitromethane was demonstrated in complete aqueous media using poly(2-... A NOVEL THREE-COMPONENT COUPLING REACTION OF ARYNES, ISOCYANIDES, AND CYANOFORMATES: A STRAIGHTFORWARD ACCESS TO CYANO-SUBSTITUTED IMINOISOBENZOFURANS [作者：LI JING; NOYORI SHINTARO; IWASAKI MASAYUKI; NAKAJIMA KIYOHIKO; NISHIHARA YASUSHI,期刊：Heterocycles, 页码：933-940 , 文章类型： Article，,卷期：2012年86-2] Iminoisobenzofuran derivatives have been prepared in moderate yields by the palladium-catalyzed three-component coupling reaction of arynes, isocyanides, and cyanoformates. This paper is dedicated to Professor Ei-ichi Ne... SYNTHESES OF NOVEL DIBENZO[d,f]HETERONINS INCORPORATING GROUP 15 AND 16 HEAVIER ELEMENTS [作者：YASUIKE SHUJI; TSUKADA SATOSHI; KAKUSAWA NAOKI; TSUCHIYA TAKASHI; KURITA JYOJI,期刊：Heterocycles, 页码：941-945 , 文章类型： Article，,卷期：2012年86-2] Fully unsaturated dibenzo[d,f]heteronins incorporating Group 15 (P, As, Sb) and Group 16 (S, Se, Te) heavier elements have been prepared via a common 1,8-dilithium intermediate. These heteronins, except for dibenzothioni... INTRAMOLECULAR CYCLIZATION OF gamma-ACETYLENIC ACIDS USING DENDRIMER-ENCAPSULATED Pd2+ CATALYSTS [作者：MAENO ZEN; MITSUDOME TAKATO; MIZUGAKI TOMOO; JITSUKAWA KOICHIRO; KANEDA KIYOTOMI,期刊：Heterocycles, 页码：947-954 , 文章类型： Article，,卷期：2012年86-2] Polyamine dendrimer-encapsulated Pd2+ catalysts were prepared by complexation of PdCl2 with internal tertiary amino groups of the dendrimer. The fifth-generation Pd2+ dendrimer catalyst showed cooperative catalysis betwe... IMPROVEMENT OF HELIX-FORMING ABILITY OF MANNOSIDE-LINKED ETHYNYLPYRIDINE OLIGOMERS CONSTRUCTED BY CONVERGENT SYNTHESIS [作者：ABE HAJIME; MAKIDA HIROKI; INOUYE MASAHIKO,期刊：Heterocycles, 页码：955-963 , 文章类型： Article，,卷期：2012年86-2] The improvement of helix-forming ability of a-D-mannoside-linked 2,6-pyridylene ethynylene "ethynylpyridine" oligomers was made by modification of the linker between the ethynylpyridine and mannoside moieties in the olig... RAPID ASSEMBLY OF POLYCYCLIC STRUCTURES VIA SIGMATROPIC REARRANGEMENT OF S-PROPARGYL XANTHATES [作者：HARRINGTON RYAN M; WRIGHT DAVID; ZARD SAMIR Z,期刊：Heterocycles, 页码：965-971 , 文章类型： Article，,卷期：2012年86-2] Upon heating in chlorobenzene, propargyl xanthates yield the corresponding 4,5-bis(alkylidene)-1,3-dithiolan-2-ones which are trapped by unactivated olefins in an intramolecular Diels-Alder cycloaddition yielding interes... A NEW MAGNETIC NANOPEAPOD: ENCAPSULATION OF MAGNETITE NANOPARTICLES IN POLYTHIOPHENE NANOTUBES [作者：NAKAHODO TSUKASA; YAMAMOTO KATSUYA; FUJIHARA HISASHI,期刊：Heterocycles, 页码：973-977 , 文章类型： Article，,卷期：2012年86-2] Template-based electropolymerization of cyclohexanedioxythiophene (CDOT) gave the corresponding polythiophene nanotubes (PNTs). A new hybrid polymer nanopeapod was constructed by introducing magnetite nanoparticles into ... RAPID TRIFLUOROMETHYLATION OF INDOLE DERIVATIVES [作者：MIYAZAKI AYAKO; SHIMIZU RYO; EGAMI HIROMICHI; SODEOKA MIKIKO,期刊：Heterocycles, 页码：979-983 , 文章类型： Article，,卷期：2012年86-2] Rapid trifluoromethylation of indole derivatives was achieved using trimethylsilyltriflate as the catalyst. Good to high yields were observed within only 5 min at room temperature. This reaction system is able to provide... A NEW ENTRY TO THE SYNTHESIS OF PRIMIN VIA A B-ALKYL SUZUKI-MIYAURA CROSS-COUPLING REACTION [作者：WATANABE KAZUHIRO; SUGIZAKI TOMOHIRO; TOZAWA YUMI; KATOH TADASHI,期刊：Heterocycles, 页码：985-989 , 文章类型： Article，,卷期：2012年86-2] Primin, a biologically active benzoquinone natural product, was efficiently synthesized in 56% overall yield in six steps starting from commercially available 5-iodovanillin. The synthetic method involves crucial steps, ... ISOLATION AND FIRST X-RAY STRUCTURES OF NICKEL COMPLEXES OF 1,2,5-THIADIAZOLE-3,4-DITHIOLATE (TDAS) IN PROTONATED FORMS [作者：MATSUMOTO KOUZOU; NISHIZAWA MAHO; HIRAO YASUKAZU; KURATA HIROYUKI; KUBO TAKASHI,期刊：Heterocycles, 页码：991-996 , 文章类型： Article，,卷期：2012年86-2] Protonated Ni(tdas)(2) complexes, tdas = 1,2,5-thiadiazole-3,4-dithiolate, are isolated and characterized by X-ray crystallography, pH-Dependent absorption measurements reveal high proton donor ability of Ni(Htdas)(2). SYNTHESIS OF THE E RING SEGMENT OF CIGUATOXIN CTX3C VIA THE NEGISHI COUPLING OF CYCLIC KETENE ACETAL TRIFLATES [作者：SHIROMA KENGO; TAKAMURA HIROYOSHI; KADOTA ISAO,期刊：Heterocycles, 页码：997-1001 , 文章类型： Article，,卷期：2012年86-2] Stereocontrolled synthesis of the E ring segment of ciguatoxin CTX3C was performed via the Negishi coupling of cyclic ketene acetal triflates. Transformation of 8-membered lactones to the corresponding ketene acetal trif...