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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   AZIRIDINE-2-CARBOXYLATES: PREPARATION, NUCLEOPHILIC RING OPENING, AND RING EXPANSION [作者：ISHIKAWA TSUTOMU,期刊：Heterocycles, 页码：2837-2877 , 文章类型： Review，,卷期：2012年85-12] Preparation methods of aziridine-2-carboxylates are discussed. The chemical reactivities, focusing on ring opening by various nucleophiles and ring expansion to larger heterocycles, are also surveyed. SYNTHESES OF BILIN CHROMOPHORES TOWARD THE INVESTIGATION OF STRUCTURE AND FUNCTION OF PHYTOCHROMES [作者：INOMATA KATSUHIKO,期刊：Heterocycles, 页码：2879-2926 , 文章类型： Review，,卷期：2012年85-12] We studied on the syntheses of linear tetrapyrrole (bilin) chromophores including the sterically locked derivatives toward the investigation of structure and function of phytochromes as photoreceptors. The synthesized ch... SYNTHESIS OF (+/-)-ESERMETHOLE VIA AN INTRAMOLECULAR CARBAMOYLKETENE-ALKENE [2+2] CYCLOADDITION [作者：OZAWA TSUKASA; KANEMATSU MAKOTO; YOKOE HIROMASA; YOSHIDA MASAHIRO; SHISHIDO KOZO,期刊：Heterocycles, 页码：2927-2932 , 文章类型： Article，,卷期：2012年85-12] A synthesis of (+/-)-esermethole (2), a synthetic precursor of physostigmine (1), has been accomplished by using an intramolecular carbamoylketene-alkene [2+2] cycloaddition followed by nitrone-mediated regioselective ri... SYNTHESIS AND REACTIVITY OF 2-CHLORO-3-FORMYLPYRIDO[2,1-a]ISOQUINOLINE DERIVATIVE. A NOVEL ROUTES TO PYRAZOLO[3 ',4 ':4,5]PYRIDO[2,1-a]ISOQUINOLINE AND ISOQUINOLINO[2,1-g][1,6]NAPHTHYRIDINES [作者：HASSANEEN HAMDI M; WARDKHAN WAGNAT W; MOHAMMED YASMIN SH,期刊：Heterocycles, 页码：2933-2947 , 文章类型： Article，,卷期：2012年85-12] Treatment of 2-hydroxy-9,10-dimethoxy-4-oxo-6,7-dihydro-4H-pyrido[2,1-a]isoquinoline-1-carbonitrile 2 with POCl3/DMF gave 2-chloro-3-formylpyrido[2,1-a]isoquinoline derivative 3. Compound 3 reacted with hydrazines 5a-d t... A TOTAL SYNTHESIS OF HERBOXIDIENE METHYL ESTER [作者：PREMRAJ RAJARATNAM; MCLEOD MALCOLM D; SIMPSON GREGORY W; BANWELL MARTIN G,期刊：Heterocycles, 页码：2949-2976 , 文章类型： Article，,卷期：2012年85-12] The total synthesis of the methyl ester, 35, of herboxidiene (1, a.k.a. GEX1A and TAN-1609), a polyketide displaying both herbicidal and anti-tumor activity, is described. The convergent reaction sequence involves, in it... KETALIZATION OF GLYCEROL WITH ACETONE TO O-HETEROCYCLIC COMPOUNDS OVER ZrO2-SiO2 SOLID ACID CATALYSTS [作者：FAN CHUNNI; XU CHENGHUA; LIU CHUANQI; HUANG ZUNYU; LIU JIANYING; YE ZHIXIANG,期刊：Heterocycles, 页码：2977-2986 , 文章类型： Article，,卷期：2012年85-12] The solid acid catalysts ZrO2-SiO2 mixed oxides were prepared by sol-gel, characterized by X-ray diffraction, NH3-temperature programmed desorption, fourier transform infrared spectroscopy, and applied in the glycerol ca... PREPARATION OF beta-KETO-beta-ALKANOYLOXYPHOSPHONATES, PHOSPHINE OXIDES AND SULFIDES AND THEIR APPLICATION TO THE SYNTHESIS OF NOVEL PHOSPHORYL- AND THIOPHOSPHORYLPYRAZOLES [作者：SLIMANI HOSNI; TOUIL SOUFIANE,期刊：Heterocycles, 页码：2987-2998 , 文章类型： Article，,卷期：2012年85-12] Two synthetic methods leading to beta-keto-beta-alkanoyloxyphosphonates, phosphine oxides and sulfides 2 are reported. The first method involves the reaction of beta-enaminoesters 1 with chlorophosphines and phosphites f... THE NEW CONVENIENT SYNTHESIS OF 6-FLUOROPURINE AND ITS 7-/9-UNSUBSTITUTED ANALOGUES [作者：DENG MEI; WANG NINGYU; XIANG GUANGMING; YU LUOTING,期刊：Heterocycles, 页码：2999-3006 , 文章类型： Article，,卷期：2012年85-12] 6-Fluoropurine and its 7-/9-unsubstituted analogues have good biological activity and serve as important pharmaceutical intermediates. This paper describes a new and convenient synthesis of 6-fluoropurine and its 7-/9-un... ONE-POT SYNTHESIS OF 2-(1,4-DIHYDRO-2H-3,1-BENZOTHIAZIN-2-YLIDENE)PROPANEDIOIC ACID DERIVATIVES BY THE REACTION OF 2-(1-BROMOALKYL)PHENYL ISOTHIOCYANATES WITH PROPANEDIOIC ACID DERIVATIVES USING SODIUM HYDRIDE [作者：KOBAYASHI KAZUHIRO; EZAKI KOSUKE,期刊：Heterocycles, 页码：3007-3013 , 文章类型： Article，,卷期：2012年85-12] An efficient one-pot procedure for the preparation of 2-(1,4-dihydro-2H-3,1-benzothiazin-2-ylidene)propanedioic acid derivatives from 2-(1-bromoalkyl)phenyl isothiocyanates with propanedioic (malonic) acid derivatives, s... NIGELACTONE, NEW PHTHALIDE GLUCOSIDE FROM THE SEEDS NIGELLA GLANDULIFERA [作者：FENG YU; LIU YUMING; LIU QINGHUA; LEI YINGJIE,期刊：Heterocycles, 页码：3015-3019 , 文章类型： Article，,卷期：2012年85-12] Chemical investigations of the seeds of Nigella glandulifera have resulted in the isolation of a new phthalide derivative, nigelactone (1), together with two known metabolites. Their structures were established by detail... SYNTHESIS AND MESOMORPHISM OF THE BIPEDAL LIQUID CRYSTALS WITH A TETRATHIAFULVALENE/DITHIOLE AND TWO CHOLESTEROL MOIETIES [作者：JIANG SHAN; WANG HAN; HOU RUIBIN; ZHONG KELI; YIN BINGZHU,期刊：Heterocycles, 页码：3021-3028 , 文章类型： Article，,卷期：2012年85-12] The bipedal 1,3-dithiole-2-thiones and the appropriate EDT-TTFs bearing two cholesteryl linked with two omega-thioalkanoyloxy spacers of varying length were synthesized. All of bipedals showed mesogenic phases in a wide ... PALLADIUM-CATALYZED SYNTHESIS OF A PHOSPHINE OXIDE WITH A CHIRAL PHOSPHORUS CENTER VIA C-H PHOSPHINATION [作者：KUNINOBU YOICHIRO; ORIGUCHI KAZUKI; TAKAI KAZUHIKO,期刊：Heterocycles, 页码：3029-3034 , 文章类型： Article，,卷期：2012年85-12] A new phosphine oxide with a chiral phosphine center was synthesized from a bis(biphenyl)phosphine oxide by dehydrogenative intramolecular cyclization via P-H and C-H bond activation under palladium catalysis. The absolu... THREE NEW D-LACTONE RING ISOMERIC PHRAGMALIN-TYPE LIMONOIDS FROM CHUKRASIA TABULARIS VAR. VELUTINA [作者：LI YI; LUO JUN; WANG QIANG; KONG LINGYI,期刊：Heterocycles, 页码：3035-3041 , 文章类型： Article，,卷期：2012年85-12] Three new D-lactone ring isomeric phragmalin-type limonoids, tabulalins G-I (1-3), were isolated from the stem barks of Chukrasia tabularis var. velutina. Compound 1 possesses C-16/C-30 delta-lactone ring (D), which was ...