个性化文献订阅>文章检索

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13条记录   ASYMMETRIC INTERMOLECULAR N-H INSERTION REACTION OF PHENYLDIAZOACETATES WITH ANILINES CATALYZED BY ACHIRAL DIRHODIUM(II) CARBOXYLATES AND CINCHONA ALKALOIDS [作者：SAITO HIROAKI; UCHIYAMA TAKETO; MIYAKE MUNEHARU; ANADA MASAHIRO; HASHIMOTO SHUNICHI; TAKABATAKE TOHRU; MIYAIRI SHINICHI,期刊：Heterocycles, 页码：1149-1155 , 文章类型： Article，,卷期：2010年81-5] Asymmetric N-H insertion of phenyldiazoacetates with anilines catalyzed cooperatively by achiral dirhodium(II) carboxylates and cinchona alkaloids is described. A new catalytic system of dirhodium(II) tetrakis(triphenyla... SYNTHESIS OF DIAZA-ANALOGUE OF FLUORENONE AND SPIROBIFLUORENE [作者：WU GUOHONG; LIU QIANCAI; TANG JIE,期刊：Heterocycles, 页码：1157-1168 , 文章类型： Article，,卷期：2010年81-5] The effective syntheses of diaza-analogue of fluorenone and spirobifluorene with N=N bond has been conducted with the using of ninhydrin and corresponding acetyl derivatives of arenes. Single-crystal X-ray diffraction of... L-FRUCTO- AND D-PSICOFURANOSYLATION REACTIONS CATALYZED BY SCANDIUM TRIFLATE [作者：YAMANOI TAKASHI; ISHIYAMA TOSHIAKI; ODA YOSHIKI; MATSUDA SHO; WATANABE MIKIO,期刊：Heterocycles, 页码：1141-1147 , 文章类型： Article，,卷期：2010年81-5] This paper describes the formation of L-fructo- and D-psicofuranosidic bonds by the scandium triflate catalyzed glycosidation. The reaction of the benzoylated L-fructofuranosyl acetate with an alcohol in the presence of ... REGIOSELECTIVE SYNTHESIS OF 3-INDOLYL(ALKOXY)ACETATES [作者：SUAREZCASTILLO OSCAR R; MELENDEZRODRIGUEZ MYRIAM; CANOESCUDERO INDIRA C; LUZ DE ITAGUTIERREZ SANDRA; SANCHEZZAVALA MARICRUZ; MORALESRIOS MARTHA S; JOSEPHNATHAN PEDRO,期刊：Heterocycles, 页码：1169-1182 , 文章类型： Article，,卷期：2010年81-5] The regioselective synthesis of N-carbomethoxy-2-alkoxyindolenines and alpha-alkoxyindoles is reported. Bromination of indole 5 with NBS/AIBN/CCl4 gave alpha-bromoindole 6 which after treatment with ROH/3 angstrom molecu... SYNTHESIS, SPECTRAL CHARACTERIZATION AND ANTIMICROBIAL ACTIVITY OF NOVEL 5-[(SUBSTITUTED) METHYL]-5-OXO-1, 3, 2 lambda(4), 5 lambda(5)-DIOXASELENA PHOSPHINAN-2-ONES [作者：REDDY S SUBBA; KRISHNA B SATHEESH; RAO V KOTESWARA; RAJU C NAGA,期刊：Heterocycles, 页码：1183-1192 , 文章类型： Article，,卷期：2010年81-5] A series of novel 5-[(substituted) methyl]-5-oxo-1,3,2 lambda(4),5 lambda(5)-dioxa selenaphosphinan-2-ones (4-17) were successfully synthesized from tris(bromomethyl)phosphine oxide (I) and sodium selenite (2) to form th... ANTITUMORAL ALKALOIDS FROM CLAUSEA LANSIUM [作者：MANEERAT WISANU; LAPHOOKHIEO SURAT,期刊：Heterocycles, 页码：1261-1269 , 文章类型： Article，,卷期：2010年81-5] Three new carbazole alkaloids, mafaicheenamine A-C (1-3), along with five know compounds (4-8) were isolated from the twitzs of Clausena lansium. All compounds were characterized by the analysis of spectroscopic methods.... GERANYL DERIVATIVES OF ISOQUINOLINE ALKALOIDS SHOW INCREASED BIOLOGICAL ACTIVITIES [作者：NISHIYAMA YUMI; IWASA KINUKO; OKADA SUGURU; TAKEUCHI SOUSUKE; MORIYASU MASATAKA; KAMIGAUCHI MIYOKO; KOYAMA JUNKO; TAKEUCHI ATSUKO; TOKUDA HARUKUNI; KIM HYESOOK; WATAYA YUSUKE; TAKEDA KAZUYOSHI; LIU YINAN; WU PEICHI; BASTOW KENNETH F; AKIYAMA TOSHIYUKI; LEE KUOHSIUNG,期刊：Heterocycles, 页码：1193-1229 , 文章类型： Article，,卷期：2010年81-5] Three types of isoquinoline alkaloids were tested for antimicrobial, cytotoxic, anti-malarial, anti-oxidant, and anti-HIV activities, as well as inhibitory activity against Epstein-Barr virus early antigen (EBV-EA) activ... PALMARIOLS A AND B, TWO NEW CHLORINATED DIBENZO-alpha-PYRONES FROM DISCOMYCETE LACHNUM PALMAE [作者：MATUMOTO TAKUNORI; HOSOYA TSUYOSHI; SHIGEMORI HIDEYUKI,期刊：Heterocycles, 页码：1231-1237 , 文章类型： Article，,卷期：2010年81-5] Two new chlorinated dibenzo-alpha-pyrones, palmariols A (1) and B (2), together with alternariol 9-methyl ether (3), were isolated from the mycelial extract of discomycete Lachnum palmae (NRBC-106495), and the structures... SYNTHESIS OF (3S)-2,5-DIETHOXY-3,6-DIHYDRO-3-ISOPROPYL-6-METHYLSULFANYLPYRAZINES AND STEREOSELECTIVITY IN ALKYLATION OF THE ANIONS [作者：USAMI YOSHIHIDE; ARIMOTO MASAO; KIOKA CHISAKA; YAMANAKA MASAKO; MATSUDA NAOKO; ICHIKAWA HAYATO,期刊：Heterocycles, 页码：1239-1251 , 文章类型： Article，,卷期：2010年81-5] The introduction of a sulfur function into Schollkopf's bislactim ether was carried out to synthesize the diastereomers of (3S)-2,5-diethoxy-3,6-dihydro-3-isopropyl-6-methylsulfanylpyrazine. Stereoselectivity in the alky... SYNTHESIS OF 4-ALKYLIDENE-2-(DIMETHYLAMINO)METHYL-4H-3,1-BENZOXAZINES BY THE REACTION OF ALKYL 2-ISOCYANOPHENYL KETONES WITH ESCHENMOSER'S SALT [作者：KOBAYASHI KAZUHIRO; OKAMURA YUTA; FUKAMACHI SHUHEI; KONISHI HISATOSHI,期刊：Heterocycles, 页码：1253-1259 , 文章类型： Article，,卷期：2010年81-5] 4-Alkylidene-2-(dimethylamino)methyl-4H-3,1-benzoxazines could be prepared in one-pot by simply treating alkyl 2-isocyanophenyl ketones with dimethyl(methylene)ammonium iodide (Eschenmoser's salt) in dichloromethane at 0... AN EFFICIENT ONE-POT AND SOLVENT-FREE SYNTHESIS OF CHROMENO[2,3-d]PYRIMIDINE DERIVATIVES: MICROWAVE ASSISTED REACTION [作者：ZONOUZI AFSANEH; BINIAZ MOJTABA; MIRZAZADEH ROGHIEH; TALEBI MERZIEH; NG SEIK WENG,期刊：Heterocycles, 页码：1271-1278 , 文章类型： Article，,卷期：2010年81-5] An efficient synthesis of sonic new chromeno[2,3-d]pyrimidine derivatives has been described by a solvent-free, multi-component reaction in fairly high yields. DEVELOPMENT OF NOVEL ASYMMETRIC REACTIONS AND THEIR APPLICATION TO THE SYNTHESIS OF NATURAL PRODUCTS [作者：NODE MANABU; KAJIMOTO TETSUYA; OZEKI MINORU,期刊：Heterocycles, 页码：1061-1092 , 文章类型： Review，,卷期：2010年81-5] Asymmetric Michael addition of zinc enolate to a chiral nitroolefin was improved and the method was applied to the synthesis of (-)-Delta(9(12))-Capnellene [(-)-6], (-)-aphanorphine [(-)-7], and (-)-eptazocine [(-)-8]. W... RECENT PROGRESS OF NEW CATALYTIC SYNTHETIC METHODS FOR NITROGEN HETEROCYCLES BASED ON HYDROGEN TRANSFER REACTIONS [作者：YAMAGUCHI RYOHEI; FUJITA KENICHI; ZHU MINGWEN,期刊：Heterocycles, 页码：1093-1140 , 文章类型： Review，,卷期：2010年81-5] This review summarizes a variety of synthetic methods for nitrogen heterocycles based on hydrogen transfer reactions catalyzed by transition metals in a past decade. Most of them employ iridium and ruthenium complexes as...