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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   HIGH BINDING AFFINITY OF DABCO WITH PORPHYRIN IN A PORPHYRIN-CIS-STILBENE-PORPHYRIN TRIAD [作者：WAHADOSZAMEN MD; YAMAMURA TAKASHI; MOMOTAKE ATSUYA; NISHIMURA YOSHINOBU; ARAI TATSUO,期刊：Heterocycles, 页码：331-337 , 文章类型： Article，,卷期：2009年79-1] Porphyrin-stilbene-porphyrin triad (mZnPst) where a central cis-stilbene unit is connected to zinc-tetraphenylporphyrin (ZnTPP) was synthesized and its binding ability with a selected guest ligand DABCO was investigated.... MEMORY OF CHIRALITY IN THE ELECTROCHEMICAL OXIDATION OF N-o-PHENYLBENZOYLATED PROLINOLS [作者：WANYOIKE GEORGE NGANGA; MATSUMURA YOSHIHIRO; ONOMURA OSAMU,期刊：Heterocycles, 页码：339-345 , 文章类型： Article，,卷期：2009年79-1] Memory of chirality in electrochemical carbon-carbon bond cleavage of N-o-phenylbenzoylated (S)-prolinol derivatives was observed. Substituents of the alpha-position affected the ee of the products. The reaction of alpha... REGIOSELECTIVE RING EXPANSION OF 3,3-DIMETHYLAZIRIDIN-2-CARBOXYLATE AND A PHOTOCHEMICAL ENTRY TO THE PENEM NUCLEUS [作者：WHITE JAMES D; FURUTA TAKUYA,期刊：Heterocycles, 页码：347-352 , 文章类型： Article，,卷期：2009年79-1] 3,3-Dimethylaziridin-2-carboxylates undergo ring expansion with thiocyanates to give a 4,4-dimethylthiazolidin-5-carboxylate as the major product. Irradiation of a N-cysteinyl-3,3-dimethylaziridin-2-carboxylate was found... STEREOSELECTIVE SYNTHESIS OF 5-SUBSTITUTED 2-ALLYL-3-OXOTETRAHYDROFURAN-2-CARBOXYLATES USING RHODIUM(II)-CATALYZED OXONIUM YLIDE FORMATION-[2,3] SHIFT [作者：YAKURA TAKAYUKI; MATSUI KATSUAKI; MATSUZAKA KAZUMASA; YAMASHITA MASAYUKI,期刊：Heterocycles, 页码：353-358 , 文章类型： Article，,卷期：2009年79-1] Reaction of 5-allyloxy-2-diazo-3-ketoesters 1 with catalytic amount of dirhodium(II) tetraacetate in dichloromethane proceeded in high yields with excellent stercoselectivities to give methyl 5-substituted 2-allyl-3-oxot... EFFECTIVE SYNTHESIS OF OPTICALLY ACTIVE 3-PHENYL-3-(3-TRIFLUOROMETHYL) DIAZIRINYL BISHOMOPHENYLALANINE DERIVATIVES [作者：MURAI YUTA; HATANAKA YASUMARU; KANAOKA YULICHI; HASHIMOTO MAKOTO,期刊：Heterocycles, 页码：359-364 , 文章类型： Article，,卷期：2009年79-1] Effective incorporation of phenyldiazirine moiety on the acyl residue of (L)- and (D)- glutamic acid by Friedel-Crafts reactions with triflic acid developed simple preparation of bishomophenylalanine (bhPhe) for aromatic... TITANIUM TETRAIODIDE INDUCED CYCLIZATION OF 2-(2-CYANOALK-1-ENYL)-beta-KETO ESTERS INTO 2-IODOPYRIDINES [作者：HACHIYA IWAO; MINAMI YUSHI; SHIMIZU MAKOTO,期刊：Heterocycles, 页码：365-371 , 文章类型： Article，,卷期：2009年79-1] Highly substituted 2-iodopyridines were synthesized from 2-(2-cyanoalk-1-enyl)-beta-keto esters under the influence of titanium tetraiodide that worked efficiently for iodination-cyclization. SYNTHETIC STUDIES TOWARD (+)-LYSERGIC ACID: CONSTRUCTION OF THE TETRACYCLIC ERGOLINE SKELETON [作者：INOUE TOHRU; YOKOSHIMA SATOSHI; FUKUYAMA TOHRU,期刊：Heterocycles, 页码：373-378 , 文章类型： Article，,卷期：2009年79-1] We have successfully constructed the tetracyclic skeleton of lysergic acid, which features an acylation at the C3 position of the indole as well as an intramolecular Heck reaction. The optically active D ring unit could ... SYNTHESES OF N-ACYLISOXAZOLIDINE DERIVATIVES, RELATED TO A PARTIAL STRUCTURE FOUND IN ZETEKITOXIN AB, A GOLDEN FROG POISON [作者：NISHIKAWA TOSHIO; URABE DAISUKE; ISOBE MINORU,期刊：Heterocycles, 页码：379-385 , 文章类型： Article，,卷期：2009年79-1] Syntheses of four N-acylisoxazolidine derivatives related to a partial structure of zetekitoxin AB were described. C-13 NMR spectra of these compounds could not explain an unusual chemical shift observed in the N-acyliso... CONVERGENT SYNTHESIS OF FLUORESCENCE LABELED SOLAMIN [作者：KOJIMA NAOTO; MORIOKA TAKEKUNI; YANO MASAHIRO; SUGA YUKI; MAEZAKI NAOYOSHI; TANAKA TETSUAKI,期刊：Heterocycles, 页码：387-393 , 文章类型： Article，,卷期：2009年79-1] The convergent synthesis of dansyl-labeled solamin, an antitumor Annonaceous acetogenin, has been achieved. The carbon skeleton was assembled from three fragments: the THF ring fragment, the fluorescent fragment, and the... AN EFFICIENT AND SELECTIVE SYNTHETIC METHOD FOR FLUORINE-CONTAINING BENZO[h]QUINOLINES AND 1H-BENZO[h]QUINOLIN-2-ONES FROM N-PROPARGYL-2,4-BIS(TRIFLUOROACETYL)-1-NAPHTHYLAMINE [作者：OKADA ETSUJI; SHIBATA DAI; TSUKUSHI NORIKADO; DOHURA MASATO; MEDEBIELLE MAURICE,期刊：Heterocycles, 页码：395-401 , 文章类型： Article，,卷期：2009年79-1] N-Propargyl-2,4-bis(trifluoroacetyl)-1-naphthylamine (3) underwent nitrogen-containing heterocyclic ring-formation reactions with active methylene compounds such as dialkyl malonates in the presence of sodium alkoxides. ... TOTAL SYNTHESIS AND THE CONFIRMATION OF THE REVISED STRUCTURES OF BOTCININS A AND B [作者：FUKUI HIROKI; TSUJI KEISUKE; UMEZAKI YUMA; SHIINA ISAMU,期刊：Heterocycles, 页码：403-410 , 文章类型： Article，,卷期：2009年79-1] The stereoselective total syntheses of botcinins A (1) and B (2), and homobotcinin E (4), a homologue of botcinin E (3), have been achieved starting from a polyoxygenated tetrahydropyran intermediate 15 via formation of ... PHOTO- AND ELECTROCHEMICAL PROPERTIES OF NOVEL 7-SUBSTITUTED NAPHTHYRIDINE DERIVATIVES [作者：CHIBA JUNYA; DOI YASUHIRO; INOUYE MASAHIKO,期刊：Heterocycles, 页码：411-415 , 文章类型： Article，,卷期：2009年79-1] Here we report a new class of 1,8-naphthyridine derivatives, 2-amino-7-(3,4-di methoxyphenyl)-1,8-naphthyridine, 2-amino-7-(3,4-dihydroxy phenyl)-1,8-naphthyridine, 2-amino-(5,6-dimethoxy-1H-indenyl[2,3-b])-1,8-naphthyri... STEREOSELECTIVE SYNTHESIS OF 2,3,5-TRISUBSTITUTED PYRROLIDINES USING METATHESIS-DERIVED beta-AMINOALLYLSILANES [作者：MCELHINNEY ALISON D; MARSDEN STEPHEN P,期刊：Heterocycles, 页码：417-422 , 文章类型： Article，,卷期：2009年79-1] Amine-functionalised allylsilanes, readily prepared by olefin cross metathesis of protected homoallylamines with allyltrimethylsilane, undergo stereoselective condensation with aldehydes to yield trisubstituted pyrrolidi... STRUCTURE STUDIES OF THE METABOLITES OF PAXILLUS INVOLUTUS [作者：MIKOLAJCZYK LUCYNA; ANTKOWIAK WIESLAW Z,期刊：Heterocycles, 页码：423-426 , 文章类型： Article，,卷期：2009年79-1] The chemical components of Paxillus involutus were isolated from the freshly collected fruit bodies. Mainly on the basis of the NMR and ESI-MS data, the structures of the unknown pigments were determined as 4-(3,4-dihydr... SYNTHETIC STUDIES ON THE FLUORINATED ANALOGS FOR THE PUTATIVE OXINDOLE-TYPE METABOLITES OF 5-HALOTRYPTAMINES [作者：FUJIWARA TOMOYA; SEKI TAKAYUKI; MIURA MASARU; TAKEUCHI YOSHIO,期刊：Heterocycles, 页码：427-432 , 文章类型： Article，,卷期：2009年79-1] The suitably protected precursors for direct fluorination, N-b-Boc di-protected 5-fluorotryptamine (13), N-b-acetyl-N-b-Boc protected 5-halotryptamines (15a-c), were treated with Selectfluor (TM) in MeCN/water in the pre... NEW ENTRY TO THE ASYMMETRIC SYNTHESIS OF (-)-LASUBINE I AND (+)-SUBCOSINE I [作者：YAMAZAKI NAOKI; ATOBE MASAKAZU; KIBAYASHI CHIHIRO; AOYAGI SAKAE,期刊：Heterocycles, 页码：433-439 , 文章类型： Article，,卷期：2009年79-1] A new synthetic entry to (-)-lasubine I and (+)-subcosine I has been established by employing the (S)-allylalkoxy benzylamine as a chiral synthon. The synthesis involves the formation of an alpha,beta-unsaturated lactone...