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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16条记录   NEW PHENYLPROPANOID-SUBSTITUTED FLAVAN-3-OLS FROM THE LEAVES OF CASTANOPSIS SCLEROPHYLLA [作者：HUANG YONGLIN; MATSUO YOSUKE; TANAKA TAKASHI; KOUNO ISAO; LI DIANPENG; NONAKA GENICHIRO,期刊：Heterocycles, 页码：2321-2328 , 文章类型： Article，,卷期：2011年83-10] In the course of a chemotaxonomical study of Chinese Castanopsis species, two previously unknown flavan-3-ols, named sclerophynins A and B, were isolated from the leaves of C. sclerophylla, together with five related kno... THE GLASSY MESOMORPHISM OF UNSYMMETRICAL BIPEDAL LIQUID CRYSTALS DERIVED FROM TETRATHIAFULVALENE AND CHOLESTEROL [作者：ZHENG NINGJUAN; WANG HAN; HOU RUIBIN; YIN BINGZHU,期刊：Heterocycles, 页码：2329-2336 , 文章类型： Article，,卷期：2011年83-10] 1,3-dithiole-2-ones attached two cholesteryl through two omega-thioalkanoyloxy spacer of varying length were easily transformed to the appropriate TTF-based unsymmetrical bipedal by cross-coupling reaction in net triethy... SYNTHESIS OF HETARENOINDANONE BASED ON SELENIUM DIOXIDE-PROMOTED DIRECT INTRAMOLECULAR CYCLIZATION [作者：ZHANG YOULAI; TANIMOTO HIROKI; NISHIYAMA YASUHIRO; MORIMOTO TSUMORU; KAKIUCHI KIYOMI,期刊：Heterocycles, 页码：2337-2342 , 文章类型： Article，,卷期：2011年83-10] An alternative and simple method to prepare hetarenoindanone via intramolecular cyclization has been studied. This reaction represents the first example of an intramolecular Friedel-Crafts reaction-oxidation cascade prom... CONVENIENT SYNTHESIS OF AMINOPYRIDINECARBOXYLIC ACIDS [作者：OKAMOTO IWAO; TERASHIMA MASAYUKI; YOSHIOKA REMPEI; MURAMATSU TOMONORI; KOJIMA SATOMI; INOUE HARUKA; TAKAHASHI MIO; MORITA NOBUYOSHI; TAMURA OSAMU,期刊：Heterocycles, 页码：2343-2352 , 文章类型： Article，,卷期：2011年83-10] 6-(Alkylamino)pyridine-2-carboxylic acids and 5-(alkylamino)pyridine-3-carboxylic acids were conveniently synthesized from dibromopyridine in satisfactory yields. SYNTHESIS AND ALKYLATION OF SPIRO-2-OXAZOLINES CONTAINING FUSED 3,4-DIHYDROPYRAZIN-2(1H)-ONES [作者：MUSIC IRENA; VERCEK BOJAN,期刊：Heterocycles, 页码：2353-2364 , 文章类型： Article，,卷期：2011年83-10] Spiro-2-oxazolines containing 3,4-dihydroquinoxalin-2(1H)-one, 3,4-dihydrobenzoquinoxalin-2(1H)-one, 1,2-dihydropyrido[2,3-b]pyrazin-3(4H)-one or 5,6-dihydropteridin-7(8H)-one moiety were prepared by heating of aromatic ... THREE NEW TRITERPENOIDS FROM PULSATILLA CHINENSIS (BUNGE) REGEL AND THEIR CYTOTOXIC ACTIVITIES [作者：SHU ZHAN; CHEN ZHONG; DING XIUJUAN; LU BINGQIAN; JI CHENJIAO; XU QIONGMING; LI XIAORAN; YANG SHILIN,期刊：Heterocycles, 页码：2365-2372 , 文章类型： Article，,卷期：2011年83-10] Three new triterpenoids, pulsatilla triterpenic acids A - C (1-3) were isolated from the roots of Pulsatilla chinensis (Bunge) Regel, and their structures were established on the basis of their spectral data. The three n... SYNTHESIS OF FURO[2,3-b]PYRIDINE [作者：CHANG MENGYANG; TAI HANGYI,期刊：Heterocycles, 页码：2373-2380 , 文章类型： Article，,卷期：2011年83-10] Two synthetic routes toward furo[2,3-b]pyridine (1) starting with the known beta,gamma-unsaturated ester (3) are described. TWO NEW BENZOFURANYLPROPANOIDS FROM NICOTIANA TABACUM AND THEIR ANTI-TOBACCO MOSAIC VIRUS ACTIVITIES [作者：TAN JIANLIN; CHEN ZHANGYU; YANG GUANGYU; MIAO MINGMING; CHEN YONGKUAN; LI TIANFEI,期刊：Heterocycles, 页码：2381-2385 , 文章类型： Article，,卷期：2011年83-10] Two new benzofuranylpropanoids, nicotfurans A and B (1 - 2), were isolated from the roots and stems of Nicotiana tabacum. Their structures were elucidated by spectroscopic methods, including extensive 1D- and 2D- NMR tec... PREPARATIONS OF SELENIUM-CONTAINING HETEROCYCLES BASED ON AN INTRAMOLECULAR CYCLIZATION OF SELENOLS AND RELATIVES [作者：SASHIDA HARUKI,期刊：Heterocycles, 页码：2223-2254 , 文章类型： Review，,卷期：2011年83-10] The preparation of the five- to nine-membered selenium-containing heterocycles using the intramolecular cyclization of selenols and relative compounds is mainly described in this review based on recent advances in our fi... ASYMMETRIC PHOTOCYCLIZATION REACTIONS OF N-ACETYL-alpha-DEHYDRO(1-NAPHTHYL)ALANINAMIDES IN THE PRESENCE OF CHIRAL AMINE [作者：MAEKAWA KEI; TANAMI TOSHIYUKI; IGARASHI TETSUTARO; SAKURAI TADAMITSU,期刊：Heterocycles, 页码：2255-2263 , 文章类型： Article，,卷期：2011年83-10] Irradiation of the title compound having an N'-methyl group in 2-propanol and dichloromethane containing (S)-1-methyl-2-pyrrolidinemethanol at room temperature afforded (R)-3,4-dihydrobenzo[f]quinolinone derivative in en... SYNTHESIS OF (-)-UNTENOSPONGIN C, A C(21) FURANOTERPENE ISOLATED FROM THE OKINAWAN SPONGE HIPPOSPONGIA SP. [作者：NODA YOSHIHIRO; UGAJIN SHUJI; YAMANAKA AKIHIKO; MAMIYA NATSUKI,期刊：Heterocycles, 页码：2265-2269 , 文章类型： Article，,卷期：2011年83-10] Starting with (R)-(+)-citronellol (5), the first enantioselective synthesis of (-)-untenospongin C (1), a C(21) furanoterpene isolated from a marine sponge Hippospongia sp., has been achieved, the present synthesis indic... THE [2+2] CYCLOADDITION REACTION OF ETHYNYLATED 2H-CYCLOHEPTA[b]FURAN-2-ONES WITH 2,3-DICHLORO-5,6-DICYANO-1,4-BENZOQUINONE [作者：SHOJI TAKU; HIGASHI JUNYA; ITO SHUNJI; YASUNAMI MASAFUMI; MORITA NOBORU,期刊：Heterocycles, 页码：2271-2274 , 文章类型： Article，,卷期：2011年83-10] Ethynylated 2H-cyclohepta[b]furan-2-ones reacted with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in a formal [2+2] cycloaddition reaction to afford the corresponding DDQ-adducts 10-15 in good yields. UTILIZATION OF 2-HALO-1,3,4-THIADIAZOLES IN THE SYNTHESIS OF 2-FUNCTIONALIZED 1,3,4-THIADIAZOLE DERIVATIVES [作者：WANG XICUN; LUO JINGE; DING XIAOMEI; QUAN ZHENGJUN,期刊：Heterocycles, 页码：2275-2287 , 文章类型： Article，,卷期：2011年83-10] Novel 2-bromo/iodo-5-aryloxymethy1-1,3,4-thiadiazoles were prepared by the diazotization of 2-amino-1,3,4-thiadiazoles using p-TsOH as acid under the copper-free conditions. 2-Chloro-5-aryloxymethyl-1,3,4-thiadiazoles, w... EFFICIENT ONE-POT SYNTHESIS OF 2-ALKYLQUINOLINES UNDER SOLVENT-FREE CONDITIONS USING SULFONIC ACID FUNCTIONALIZED IONIC LIQUID AS A RECOVERABLE AND REUSABLE CATALYST [作者：ZHANG MIN; XIONG BIAO; WANG TING; DING YUQIANG; WANG LI,期刊：Heterocycles, 页码：2289-2298 , 文章类型： Article，,卷期：2011年83-10] Sulfonic acid functionalized ionic liquid (FIL-A) was firstly used as a recoverable and reusable catalyst for the synthesis of 2-alkylquinoline derivatives from simple and readily available alkylaldehydes and arylamines.... A NEW METHOD FOR SYNTHESIS OF 2-ALKOXYADENOSINE ANALOGS [作者：SAKAKIBARA NORIKAZU; TSURUTA TAKASHI; KOMATSU MASAHIRO; IWAI MASATOSHI; MARUYAMA TOKUMI,期刊：Heterocycles, 页码：2299-2311 , 文章类型： Article，,卷期：2011年83-10] O(6)-Methylguanosine and 2-amino-6-chloropurine riboside derivative were treated with isoamylnitrite in the presence of an appropriate alcohol to give the corresponding 2-alkoxy-6-methoxy (or chloro) purine riboside deri... CeCl(3)center dot 7H(2)O-CATALYZED SYNTHESIS OF QUINOXALINE DERIVATIVES IN LIQUID PEG-400 [作者：WU FANGWEN; HOU REISHEU; WANG HUEYMIN; KANG IOUJIUN; CHEN LINGCHING,期刊：Heterocycles, 页码：2313-2320 , 文章类型： Article，,卷期：2011年83-10] A mild and efficient route for the synthesis of quinoxaline derivatives utilizing cerium chloride heptahydrate (CeCl(3)center dot 7H(2)O) as a novel catalyst in poly(ethylene glycol) (PEG-400) under mild conditions was d...