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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94条记录   RUTHENIUM TETROXIDE OXIDATION OF N,N '-DIBOC HEXAHYDROPYRIDAZINES [作者：KANAME MAMORU; YOSHIFUJI SHIGEYUKI; SASHIDA HARUKI,期刊：Heterocycles, 页码：647-658 , 文章类型： Article，,卷期：2009年79-1] The ruthenium tetroxide (RuO4) oxidation of the 3-substituted N,N'-diBochexahydropyridazines gave the 6-oxohexahydropyridazines in good to high yields, whereas the oxidation of the unsubstituted ones also gave the 3,6-di... SYNTHESIS AND THERMAL STABILITY OF 3-SUBSTITUTED 3-BENZOSTIBEPINES [作者：YASUIKE SHUJI; IKOMA MASAAKI; KAKUSAWA NAOKI; TSUCHIYA TAKASHI; KURITA JYOJI,期刊：Heterocycles, 页码：659-667 , 文章类型： Article，,卷期：2009年79-1] Fully unsaturated 3-benzostibepines having various aryl groups on antimony have been prepared by a ring closure reaction of an appropriate antimony dihalide (ArSbBr2) with (Z,Z)-1,2-bis(2-lithiovinyl)benzene generated by... IODOBENZENE DIACETATE-PROMOTED N-N AND N-O BOND FORMATION FOR PYRAZOLO- AND ISOXAZOLOPYRIMIDINE SYNTHESES [作者：MONGUCHI YASUNARI; HATTORI KAZUYUKI; MAEGAWA TOMOHIRO; HIROTA KOSAKU; SAJIKI HIRONAO,期刊：Heterocycles, 页码：669-680 , 文章类型： Article，,卷期：2009年79-1] Pyrazolo[3,4-d]pyrimidine-4,6-dione derivatives were efficiently synthesized via the intramolecular N-N bond coupling of 5-iminomethyl-6-aminouracil derivatives using iodobenzene diacetate. The oxidative coupling was als... FACILE SYNTHESES OF THREE AHP-TYPE BUILDING BLOCKS WITH COMPLEMENTARY REACTIVITIES [作者：CHEN WEN; ZHENG XIAO; RUAN YUANPING; HUANG PEIQIANG,期刊：Heterocycles, 页码：681-693 , 文章类型： Article，,卷期：2009年79-1] Two protected 3-amino-6-hydroxy-2-piperidone derivatives (Ahp, 12 and 6), as well as a thioether analogue (7) were synthesized starting from L-glutamic acid in four, five, and six steps respectively. The Ahp derivatives ... ASSEMBLY OF SUBSTITUTED HOMOPHTHALIMIDES VIA CuI-CATALYZED COUPLING OF 2-BROMOBENZAMIDES WITH beta-KETO ESTER [作者：WANG HEXIANG; GAO KUN; JIANG YONGWEN; MA DAWEI,期刊：Heterocycles, 页码：695-702 , 文章类型： Article，,卷期：2009年79-1] CuI catalyzed coupling of 2-bromobenzamides and beta-keto esters takes place at 90 degrees C in i-PrOH to afford substituted homophthalimides in good yields. This transformation undergoes a cascade coupling/intramolecula... 5,5 '-BIPYRIDYL-2,4,6,2 ',4 ',6 '-HEXAONE DERIVATIVES (HYDURILIC ACIDS): SYNTHESES, MECHANISM OF C-C-BOND FORMATION AND PROPERTIES OF THE DIMERIC BARBITURIC ACID DERIVATIVES [作者：MUELLER CHRISTA E; ROEGLER CAROLIN; HOCKEMEYER JOERG,期刊：Heterocycles, 页码：703-720 , 文章类型： Article，,卷期：2009年79-1] A series of hydurilic acid derivatives (5,5'-bipyrimidinyl-2,4,6,2',4',6'-hexaones) including several new derivatives was synthesized from 5,6-diaminouracils. Mechanisms for their formation are proposed and discussed. Fu... STEREOCONTROLLED TOTAL SYNTHESIS OF (+/-)-FR901483 [作者：IEDA SHIGERU; ASOH YUSUKE; FUJIMOTO TEPPEI; KITAOKA HARUKA; KAN TOSHIYUKI; FUKUYAMA TOHRU,期刊：Heterocycles, 页码：721-738 , 文章类型： Article，,卷期：2009年79-1] The total synthesis of potent immunosuppressant FR901483 (1) is reported. The remarkable feature of our convergent synthesis is the p-methoxybenzyl and methylamino groups are stereoselectively incorporated within the tri... Adenosine Receptors: The Contributions by John W. Daly [作者：FREDHOLM BERTIL B; JACOBSON KENNETH A,期刊：Heterocycles, 页码：73-83 , 文章类型： Biographical-Item，,卷期：2009年79-1] John Daly played an important role in defining adenosine receptors as an important target for drug discovery. His systematic work characterized the effects of adenosine analogues on cyclic AMP in the brain that were anta... INTERMOLECULAR CARBON RADICAL ADDITION TO CYCLIC NITRONE [作者：UEDA MASAFUMI; MIYABE HIDETO; NONOGUCHI NAMI; MIYATA OKIKO; TAMURA OSAMU; NAITO TAKEAKI,期刊：Heterocycles, 页码：739-751 , 文章类型： Article，,卷期：2009年79-1] The intermolecular radical addition to chiral glyoxylic nitrone was studied. The ethyl radical addition to nitrone by using triethylborane proceeded smoothly to give the desired ethylated product with moderate diastereos... SYNTHETIC STUDIES ON NATURAL ISOCOUMARINS AND ISOCARBOSTYRIL DERIVATIVES HAVING AN ALKYL SUBSTITUENT AT THE 3-POSITION: TOTAL SYNTHESIS OF SCOPARINES A AND B, AND RUPRECHSTYRIL [作者：RUDYANTO MARCELLINO; KOBAYASHI KOICHI; HONDA TOSHIO,期刊：Heterocycles, 页码：753-764 , 文章类型： Article，,卷期：2009年79-1] Two isocoumarins, scoparines A and B, having n-propyl group at the 3-position, and a new isocarbostyril, ruprechstyril, bearing n-pentyl substituent at the 3-position were synthesized via Sonogashira coupling of the corr... NAUCLEAMIDE F, A NEW MONOTERPENE INDOLE ALKALOID FROM NAUCLEA LATIFOLIA [作者：KAKUGUCHI YUKA; ISHIYAMA HARUAKI; KUBOTA TAKAAKI; KOBAYASHI JUNICHI,期刊：Heterocycles, 页码：765-771 , 文章类型： Article，,卷期：2009年79-1] A new monoterpene indole alkaloid, naucleamide F (1), has been isolated from the bark and wood of Nauclea latifolia, and the structure and stereochemistry were elucidated on the basis of the spectral data. Naucleamide F ... STUDIES TOWARD INTRAMOLECULAR CYCLOADDITION OF o-QUINODIMETHANE WITH AN OXAZOLE MOIETY [作者：MATSUYA YUJI; QIN HONGBO; NEMOTO HIDEO,期刊：Heterocycles, 页码：773-779 , 文章类型： Article，,卷期：2009年79-1] Thermal reaction of benzocyclobutene derivatives having an oxazole moiety was investigated. Intramolecular [4+2] cycloaddition of o-quinodimethane, generated by thermolysis of the benzocyclobutene, with the oxazole did n... USE OF DIKETOPIPERAZINES FOR DETERMINING ABSOLUTE CONFIGURATIONS OF alpha-SUBSTITUTED SERINES BY H-1-NMR SPECTROSCOPY [作者：SANO SHIGEKI; NAKAO MICHIYASU; TAKEYASU MASANORI; KITAIKE SYUJI; YOSHIOKA YASUKO; NAGAO YOSHIMITSU,期刊：Heterocycles, 页码：781-789 , 文章类型： Article，,卷期：2009年79-1] A chiral alpha-substituted serine of interest was transformed into both of the corresponding diastereomers of diketopiperazines utilizing L- and D-phenylalanine methyl ester hydrochloride. The absolute configuration of t... SYNTHESIS OF THE BICYCLO[3.3.1]NONANE CORE OF HUPERZINE A AND NOVEL PYRIDINE-FUSED TRICYCLES BY CYCLISATION OF PYRIDINE-BASED RADICALS [作者：WARD JARROD; CAPRIO VITTORIO,期刊：Heterocycles, 页码：791-804 , 文章类型： Article，,卷期：2009年79-1] The cyclisation of 3-pyridyl radicals and (2-pyridyl)methyl radicals, generated from (pyridyl)cyclohexenols 5 to 8, has been examined as part of a model study directed towards the synthesis of huperzine A. The 3-pyridyl ...