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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66条记录   SYNTHESIS OF HIGHLY SUBSTITUTED NITROPYRROLIDINES, NITROPYRROLIZINES AND NITROPYRROLES VIA MULTICOMPONENT-MULTISTEP SEQUENCES WITHIN A FLOW REACTOR [作者：BAUMANN MARCUS; BAXENDALE IAN R; KIRSCHNING ANDREAS; LEY STEVEN V; WEGNER JENS,期刊：Heterocycles, 页码：1297-+ , 文章类型： Article，,卷期：2011年82-2] We expand upon recent results concerning dipolar cycloaddition reactions of unstabilized azomethine ylids with nitro alkenes to generate 3-nitropyrrolidines via a flow chemistry sequence. This new work describes the deve... SYNTHESIS AND PROPERTIES OF N-1-(3-METHOXYPROPYL)-N-3-METHYLIMIDAZOLIUM SALTS [作者：MIYAZAKI EIGO; ISHINE NOZOMI; TAKIMIYA KAZUO; KAI HIROYUKI,期刊：Heterocycles, 页码：1317-+ , 文章类型： Article，,卷期：2011年82-2] N-1-(3-Methoxypropyl)-N-3-methylimidazolium salts (1c-1f) were synthesized and characterized. The N(SO2CF3)(2)(-) salt (1c) exhibited the lowest viscosity (51 cP) among the salts (1c-1f). The 1(-) salt (1d) was tested as... EFFICIENT PHENOLIC OXIDATIONS TO CONSTRUCT ORTHO-SPIROLACTONE STRUCTURES USING OXO-BRIDGED HYPERVALENT IODINE(III) COMPOUND [作者：TAKENAGA NAOKO; UCHIYAMA TERUYOSHI; KATO DAISHI; FUJIOKA HIROMICHI; DOHI TOSHIFUMI; KITA YASUYUKI,期刊：Heterocycles, 页码：1327-+ , 文章类型： Article，,卷期：2011年82-2] The intramoleular ortho-spirocyclization of naphthols 1 bearing carboxylic acid moieties as internal nucleophiles using hypervalent iodine reagents is described. The use of the mu-oxo-bridged hypervalent iodine(III) comp... A MOLECULAR ORBITAL CALCULATION STUDY ON THE INTERESTING REACTIVITY OF FLUORINE-CONTAINING 3,4-DIHYDRO-2H-PYRANS WITH AROMATIC COMPOUNDS IN THE PRESENCE OF TRIFLUOROACETIC ACID [作者：OTA NORIO; KAMITORI YASUHIRO; NISHIGUCHI EISUKE; ISHII MAKOTO; OKADA ETSUJI,期刊：Heterocycles, 页码：1337-+ , 文章类型： Article，,卷期：2011年82-2] The reaction of 6-trifluoromethyl-3,4-dihydro-2H-pyrans (1) with aromatic compounds in trifluoroacetic acid gave 4-arylated dihydropyrans (3) selectively, whereas that of 5-trifluoroacetyl-6-trifluoromethyl-3,4-dihydro-2... DESIGN AND SYNTHESIS OF TELOMESTATIN DERIVATIVES CONTAINING METHYL OXAZOLE AND THEIR G-QUADRUPLEX STABILIZING ACTIVITIES [作者：MAJIMA SATOKI; TERA MASAYUKI; IIDA KEISUKE; SHINYA KAZUO; NAGASAWA KAZUO,期刊：Heterocycles, 页码：1345-+ , 文章类型： Article，,卷期：2011年82-2] Telomestatin derivatives of L2A2-6M(2)OTD (3b) and L2A2-6M(4)OTD (3c), which have a macrocyclic hexaoxazole skeleton (6OTD) containing bis- and tetra-methyl oxazoles, were synthesized as a novel G-quadruplex ligand. This... STRUCTURAL REEVALUATIONS OF AMPHIDINOL 3, A POTENT ANTIFUNGAL COMPOUND FROM DINOFLAGELLATE [作者：SWASONO RESPATI T; KANEMOTO MITSUNORI; MATSUMORI NOBUAKI; OISHI TOHRU; MURATA MICHIO,期刊：Heterocycles, 页码：1359-+ , 文章类型： Article，,卷期：2011年82-2] Among other homologues, amphidinol 3 (AM3) is the most potent antifungal compound isolated from the dinoflagellate Amphidinium klebsii. AM3 undergoes conformational changes in organic solvents while it takes relatively f... THE PREPARATION OF KETENE DITHIOACETALS AND THIOPHENES FROM CHLOROPYRIDINES CONTAINING AN ACTIVE METHYLENE GROUP [作者：STURROCK KEITH R; BREMNER DAVID H; WISHART GRANT,期刊：Heterocycles, 页码：1657-+ , 文章类型： Article，,卷期：2011年82-2] The base catalysed reaction of carbon disulphide with the active methylene groups of chloropyridines 4 and 7, followed by alkylation with reagents which also contain active methylene groups, lead to ketene dithioacetals.... SYNTHESIS OF POLYCYCLIC AROMATICS FROM A DIIODOSULTINE BY SUZUKI-MIYAURA CROSS-COUPLING AND DIELS-ALDER REACTION [作者：KOTHA SAMBASIVARAO; MESHRAM MILIND,期刊：Heterocycles, 页码：1663-+ , 文章类型： Article，,卷期：2011年82-2] A convergent synthesis of polycyclic aromatic compounds by the application of Suzuki-Miyaura cross-coupling and Die Is-Alder reaction as key steps is described. SYNTHESIS OF C-3 AND C-S SYMMETRIC CYCLIC TRIGLYCEROLS [作者：HAMADA MASAHIRO; FUJIWARA RYOU; KISHIMOTO TAKAO; NAKAJIMA NORIYUKI,期刊：Heterocycles, 页码：1669-+ , 文章类型： Article，,卷期：2011年82-2] Authentic cyclic triglycerol standards have been efficiently synthesized. C-3 and C-S symmetric cyclic glycerols were effectively synthesized using intramolecular cyclization conditions and the stereochemistry of their i... AN EFFICIENT SYNTHESIS OF ANTIBIOTIC SF-2312 (3-DIHYDROXYPHOSPHORYL-1,5-DIHYDROXY-2-PYRROLIDONE) [作者：HANAYA TADASHI; ITOH CHIKA,期刊：Heterocycles, 页码：1675-+ , 文章类型： Article，,卷期：2011年82-2] N-Benzyloxy-2-(diethoxyphosphoryl)pent-4-enamide (6) was prepared from ethyl diethoxyphosphorylacetate in a 3-step sequence. Oxidative cleavage of the terminal olefin of 6 with osmium tetroxide and sodium periodate affor... NEW OXIDATION PRODUCTS FROM (-)-EPIGALLOCATECHIN GALLATE IN NEUTRAL SOLUTION [作者：OHYABU TAKAYO; TANIGUCHI SHOKO; ITO HIDEYUKI; HATANO TSUTOMU,期刊：Heterocycles, 页码：1685-+ , 文章类型： Article，,卷期：2011年82-2] Two new products, EGCG-MOx-D5 (3) and EGCG-MOx-D6 (4), on the oxidation of (-)-epigallocatechin gallate (EGCG) (1) in its aqueous solution were isolated and their structures were elucidated. These structures and those of... POLYMYRIFLINE A, A NEW POLYMETHOXYFLAVONE FROM CITRUS AURANTIUM VAR. MYRTIFOLIA [作者：HIRASAWA YUSUKE; HIRATA MARI; HARUNA KATSUYA; TAKEDA MASAHIRO; OGAWA KAZUNORI; MORITA HIROSHI,期刊：Heterocycles, 页码：1693-+ , 文章类型： Article，,卷期：2011年82-2] A new polymethoxyflavone, polymyrifline A (1) was isolated together with known polymethoxyflavones from the peels of Citrus aurantium var. myrtifolia. Its structure was elucidated by spectroscopic methods and chemical me... SYNTHESIS OF 6-DEOXY-D-ALTROSE USED AS AN AUTHENTIC SAMPLE TO IDENTIFY AN UNKNOWN MONOSACCHARIDE ISOLATED FROM THE FRUITING BODY OF AN EDIBLE MUSHROOM [作者：YAMADA MASASHI; YOSHIDA FUMI; ANDO HIROMUNE; ISHIDA HIDEHARU; KISO MAKOTO; TAKO MASAKUNI,期刊：Heterocycles, 页码：1699-+ , 文章类型： Article，,卷期：2011年82-2] Here, we describe the synthesis of 6-deoxy-D-altrose and its subsequent use as an authentic sample to verify the structure of a monosaccharide newly isolated from the fruiting body of an edible mushroom. D-Rhamnopyranosi... REVERSIBLE DEHYDROGENATION-HYDROGENATION OF TETRAHYDROQUINOLINE-QUINOLINE USING A SUPPORTED COPPER NANOPARTICLE CATALYST [作者：MIKAMI YUSUKE; EBATA KAORI; MITSUDOME TAKATO; MIZUGAKI TOMOO; JITSUKAWA KOICHIRO; KANEDA KIYOTOMI,期刊：Heterocycles, 页码：1371-+ , 文章类型： Article，,卷期：2011年82-2] Copper nanoparticles synthesized on a titania surface (Cu/TiO2) act as an efficient heterogeneous catalyst for the reversible dehydrogenation and hydrogenation of tetrahydroquinoline-quinoline under an atmospheric pressu... A CYCLIC ACETAL TETHERED INTRAMOLECULAR DIELS-ALDER CYCLOADDITION. STUDIES DIRECTED TOWARD A TOTAL SYNTHESIS OF (+/-)-FUSIDILACTONE C [作者：GHOSH SUNIL K; WEI YONGGANG; GERASYUTO ALEKSEY I; FELTENBERGER JOHN B; WANG JIASHI; HSUNG RICHARD P,期刊：Heterocycles, 页码：1379-+ , 文章类型： Article，,卷期：2011年82-2] Efforts toward a synthesis of (+/-)-fusidilactone C is described here featuring a novel cyclic acetal tethered intramolecular Diels-Alder strategy. This unique and facile IMDA turned out to be highly endo-selective [endo... ENANTIOSELECTIVE SYNTHESIS OF alpha-METHYLENE-gamma-BUTYROLACTAMS USING N-TERT-BUTANESULFINAMIDES [作者：DEMA HAYTHEM K; FOUBELO FRANCISCO; YUS MIGUEL,期刊：Heterocycles, 页码：1411-+ , 文章类型： Article，,卷期：2011年82-2] Indium-mediated coupling of ethyl 2-(bromomethyl)acrylate (1) and chiral N-tert-butanelsulfinylimines 2 in a saturated sodium bromide aqueous solution leads to N-tert-butanesulfinyl aminoesters 3 in high yields and diast...