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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13条记录   FORMAL SYNTHESES OF DIHYDROCORYNANTHEINE AND ISORHYNCHOPHYLLINE VIA PROLINE CATALYZED MANNICH-MICHAEL REACTION [作者：NAGATA KAZUHIRO; ISHIKAWA HITOMI; TANAKA AYAKO; MIYAZAKI MICHIKO; KANEMITSU TAKUYA; ITOH TAKASHI,期刊：Heterocycles, 页码：1791-1798 , 文章类型： Article，,卷期：2010年81-8] Proline catalyzed Mannich-Michael reaction of 3-ethyl-3-buten-2-one with 9-tosyl-3,4-dihydro-beta-carboline proceeded in a highly stereoselective manner. The reaction was applied to formal syntheses of dihydrocorynanthei... 2-METHYL- AND 2-DIMETYLAMINOQUINO[4,3-e]-1,2,4-THIADIAZINE 4,4-DIOXIDES - SYNTHESIS, STRUCTURE AND N-METHYLATION [作者：CHROBAK ELWIRA; WLEKLINSKI MICHAL; MASLANKIEWICZ ANDRZEJ; KUSZ JOACHIM; ZUBKO MACIEJ; ZIEBA ANDRZEJ,期刊：Heterocycles, 页码：1799-1810 , 文章类型： Article，,卷期：2010年81-8] Reaction of 4-chloro-3-quinolinesulfonyl chloride (1) with acetamidine or with N,N-dimethyl- and N,N,N'-trimethylquanidine salts led directly or stepwise via 4-chloro-3-quinolinesulfonylguanidine (6a) to the title 2-subs... COPPER-MEDIATED OXIDATIVE CYCLIZATION OF HETEROCYCLICALLY SUBSTITUTED ALDIMINES [作者：PUFKYHEINRICH DANIELA; CIESIELSKI MICHAEL; GHARNATI LOUBNA; WALTER OLAF; DOERING MANFRED,期刊：Heterocycles, 页码：1811-1825 , 文章类型： Article，,卷期：2010年81-8] Copper-mediated cascade reactions were performed with heterocyclically substituted aldimines. These oxidative heterocyclizations include sequences of oxidations and cycloadditions or nucleophilic additions which take pla... ONE-POT TWO-STEP SYNTHESIS OF N3-FUNCTIONALIZED 3,4-DIHYDROPYRIMIDINONES IN THE PRESENCE OF TMSCI [作者：QUAN ZHENGJUN; REN RONGGUO; DA YUXIA; ZHANG ZHANG; JIA XIAODONG; YANG CAIXIA; WANG XICUN,期刊：Heterocycles, 页码：1827-1841 , 文章类型： Article，,卷期：2010年81-8] Novel 3,4-dihydropyrimidinones modified with N3-alkyloxymethyl, aminomethyl, arylsulfonylmethyl, and azidomethyl groups can be regioselectively obtained over their isomeric NI compounds in good yields by reaction of 3,4-... NOVEL SYNTHESIS OF 2-ALKOXY(ARALKOXY)-5-CHLORO[1,2,4]TRIAZOLO[1,5-a]QUINAZOLINES AND THEIR DERIVATIVES [作者：ALSALAHI RASHAD; GEFFKEN DETLEF,期刊：Heterocycles, 页码：1843-1859 , 文章类型： Article，,卷期：2010年81-8] 2-Alkoxy(aralkoxy)-5-chloro[1,2,4]triazolo[1,5-a]quinazolines have been synthesized. The corresponding 2-alkoxy(aralkoxy)[1,2,4]triazolo[1,5-a]quinazolin-5-ones were chlorinated with either oxalyl chloride or phosphorus ... EFFICIENT SYNTHESIS OF 2 '-O-CYANOETHYLATED IMIDAZOLE C-RIBONUCLEOSIDE PHOSPHORAMIDITE: A PRACTICAL BUILDING BLOCK FOR PROBING THE CATALYTIC MECHANISM OF RIBOZYMES [作者：ARAKI LISA; ZHAO ZHENGYUN; LILLEY DAVID M J; HARUSAWA SHINYA,期刊：Heterocycles, 页码：1861-1869 , 文章类型： Article，,卷期：2010年81-8] A high-yielding synthetic route leading to new 2'-O-cyanoethylated imidazole C-ribonucleoside phosphoramidite (PA) 1 has been developed (41% overall yield in ten steps). This has resulted in a marked improvement of yield... EFFICIENT SYNTHESIS OF BIFLAVONES HAVING A RING - A RING OF TWO FLAVONE UNITS USING SUZUKI CROSS-COUPLING REACTIONS [作者：KOHARI YOSHIHITO; HOSHINO YUKIO; MATSUYAMA HARUO; NAKANO HIROTO,期刊：Heterocycles, 页码：1871-1879 , 文章类型： Article，,卷期：2010年81-8] Biflavones having a A ring-A ring of two flavone units were easily prepared by using Suzuki cross-coupling reaction of borylated flavones with bromoflavones or flavone-5-triflate in good to excellent yields. EFFECT OF OXYGEN SUBSTITUENT IN THE ANILINE PART OF BENZANILIDE ON THE REGIOSELECTIVITY IN DIRECT ARYLATION USING PALLADIUM-PHOSPHINE REAGENTS [作者：HARAYAMA TAKASHI; ASAI MARIKO; MIYAGOE TAEKO; ABE HITOSHI; TAKEUCHI YASUO; YAMAGUCHI AYAKO; FUJII SHINYA,期刊：Heterocycles, 页码：1881-1889 , 文章类型： Article，,卷期：2010年81-8] This study investigated the effect of oxygen substituents at the 3'-position in the aniline part of 2-iodobenzanilides on the coupling position in its Pd-assisted direct arylation. Benzanilide with methylenedioxy and ace... A NEW SYNTHETIC STRATEGY FOR 2-DEOXY-D-RIBOSE VIA PALLADIUM(II)-CATALYZED CYCLIZATION OF ALDEHYDE [作者：MIYAZAWA MASAHIRO; AWASAGUCHI KENICHIRO; UOYA IKUYO; YOKOYAMA HAJIME; HIRAI YOSHIRO,期刊：Heterocycles, 页码：1891-1902 , 文章类型： Article，,卷期：2010年81-8] We achieved a total synthesis of 2-deoxy-D-ribose through intramolecular Pd(II)-catalyzed cyclization of aldehyde via an unstable hemiacetal intermediate as a key step. AN EFFICIENT AND CONVENIENT SYNTHESIS OF 4,5,6,7-TETRAHYDROTHIENO[3,2-c]PYRIDINES BY A MODIFIED PICTET-SPENGLER REACTION VIA A FORMYLIMINIUM ION INTERMEDIATE [作者：KITABATAKE MICHIKAZU; HASHIMOTO AKI; SAITOH TOSHIAKI; SANO TAKEHIRO; MOHRI KUNIHIKO; HORIGUCHI YOSHIE,期刊：Heterocycles, 页码：1903-1921 , 文章类型： Article，,卷期：2010年81-8] A synthesis of N-formyl-4,5,6,7-tetrahydrothieno[3,2-c]pyridines (5) was achieved in a highly efficient manner via trifluoroacetic acid catalyzed cyclization of formyliminium ion (4), which was produced by imination of 2... SYNTHESIS OF QUINOLINE-BEARING FERROCENE DERIVATIVES VIA FRIEDLANDER REACTION OF ACETYL- AND 1,1 '-DIACETYLFERROCENES WITH o-AMINO ARYL ALDEHYDES [作者：GAO WENTAO; CHENG XIUPING; LI YANG,期刊：Heterocycles, 页码：1923-1930 , 文章类型： Article，,卷期：2010年81-8] A facile and convenient synthesis of quinolyl-substituted ferrocenes via Friedlander reaction of acetylferrocene or 1,1'-diacetylferrocene with 2-aminobenzaldehyde, 2-aminopiperonal, and (2-aminophenyl)(phenyl) methanone... NAPHTHOPYRONES FROM CULTURED LICHEN MYCOBIONTS OF PYRENULA SP. [作者：TAKENAKA YUKIKO; NAGAKURA NAOTAKA; HAMADA NOBUO; TANAHASHI TAKAO,期刊：Heterocycles, 页码：1931-1935 , 文章类型： Article，,卷期：2010年81-8] Spore-derived mycobionts of the lichen Pyrenula sp. were cultivated on a malt-yeast extract medium supplemented with 10% sucrose and their metabolites were investigated. A new naphthopyrone derivative, pyrenulin, as well... THE CHEMICAL AND BIOLOGICAL PROPERTIES OF PROTOPINE AND ALLOCRYPTOPINE [作者：VACEK JAN; WALTEROVA DANIELA; VRUBLOVA EVA; SIMANEK VILIM,期刊：Heterocycles, 页码：1773-1789 , 文章类型： Review，,卷期：2010年81-8] The isoquinoline alkaloids, protopine and allocryptopine are components of numerous phytopreparations. The wide spectrum of biological activities reported for these alkaloids include multiple actions on the cardiovascula...