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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35条记录   Synthesis of isofagomine and a new C6 pyrrolidine azasugar with potential biological activity. [作者：Espeel, Pieter E. R.;Piens, Kathleen;Callewaert, Nico;Van der Eycken, Johan;,期刊：SYNLETT, 页码：2321-2325 , 文章类型： 研究论文，,卷期：2008年-15] An efficient asym. synthesis of isofagomine, based on a precursor contg. 3 differentiated hydroxyl functions, is described. The side product in the key alkylation step is converted into (2S,3R,4R)-2,4-bis(hydroxymethyl)... New route to natural camptothecin through isomunchnone cycloaddition. [作者：Kanazawa, Alice;Muniz, Mauro N.;Baumlova, Barbora;Ljungdahl, Natalie;Greene, Andrew E.;,期刊：SYNLETT, 页码：2275-2278 , 文章类型： 研究论文，,卷期：2008年-15] A novel approach to camptothecin (I) is described employing [3+2] cycloaddn. of isomunchnone intermediate II, a Suzuki coupling, and a Shibasaki enantioselective cyanosilylation. The synthesis requires 12 steps and proc... A practical asymmetric synthesis of the ACNO fragment of morphine alkaloids. [作者：Hsin, Ling-Wei;Chang, Li-Te;Liou, Huei-Ling;,期刊：SYNLETT, 页码：2299-2302 , 文章类型： 研究论文，,卷期：2008年-15] Asym. total synthesis of the ACNO skeleton (I) of morphine alkaloids was achieved in excellent overall yields and optical purities using the Ru-catalyzed asym. transfer hydrogenation, Pd-catalyzed cyclization, and Pt-cat... Molecular complexity from aromatics; An efficient route to 1,8-dimethyl-5-spirocyclopropanetricyclo[6.3.0.0]undecan-10-one: A potential intermediate for synthesis of ceratopicanol. [作者：Singh, Vishwakarma;Chandra, Girish;Mobin, Shaikh M.;,期刊：SYNLETT, 页码：2267-2270 , 文章类型： 研究论文，,卷期：2008年-15] A new stereoselective synthesis of a linearly fused triquinane intermediate (I) from a simple arom. precursor is described. Cycloaddn. of cyclohexa-2,4-dienone and photochem. oxa-di-p-methane rearrangement in a functiona... Valuable versatile reactivity of thiaisatoic anhydrides: expedient solid-phase synthesis of thieno[1,4]diazepine-2,5-diones. [作者：Brouillette, Yann;Verdie, Pascal;Martinez, Jean;Lisowski, Vincent;,期刊：SYNLETT, 页码：2360-2364 , 文章类型： 研究论文，,卷期：2008年-15] An expedient route for the generation of substituted thieno[3,2-e][1,4]diazepine-2,5-dione analogs is described. In soln., thiaisatoic anhydride and its N-alkylated equiv. react in opposite ways with amino acids in basi... Regioselective preparation of N-methylpyrazole derivative. [作者：Profeta, Roberto;Mattioli, Mario;Micheli, Fabrizio;Piga, Elisa;Spada, Simone;Tarsi, Luca;Andreotti, Daniele;,期刊：SYNLETT, 页码：2283-2286 , 文章类型： 研究论文，,卷期：2008年-15] A novel high-yielding and regioselective method to prep. N-methylpyrazoles is reported by reaction of an N-Boc-N-methylhydrazone with an arom. alkyl ester. Rhodium(I)-catalyzed cycloisomerization reaction of yne-allenamides: an approach to cyclic enamides. [作者：Brummond, Kay M.;Yan, Bingli;,期刊：SYNLETT, 页码：2303-2308 , 文章类型： 研究论文，,卷期：2008年-15] The successful conversion of alkynyl allenamides to triene-contg. heterocycles is demonstrated via a rhodium(I)-catalyzed cycloisomerization. K-10 clay-catalyzed enol-driven decarboxylative ring-transformation approach to dihydro- and tetrahydroquinolines from carbohydrates. [作者：Yadav, Lal Dhar Singh;Awasthi, Chhama;Rai, Vijai Kumar;Rai, Ankita;,期刊：SYNLETT, 页码：2257-2262 , 文章类型： 研究论文，,卷期：2008年-15] An original synthetic approach to 4-(polyhydroxyalkyl)quinolines using unprotected D-glucose/D-xylose as bio-renewable resources is reported. The synthetic protocol involves enol-driven Michael-type addn. of cyclic keto... An efficient protocol for multicomponent stereoselective synthesis of 3-amino-2(1H)-pyridinones using CeCl3.7H2O/NaI as a reaction promoter. [作者：Yadav, Lal Dhar S.;Kapoor, Ritu;,期刊：SYNLETT, 页码：2348-2354 , 文章类型： 研究论文，,卷期：2008年-15] 2-phenyl-1,3-oxazolin-5-one, and amines is reported. The protocol involves sequential Michael addn., condensation, ring transformation, and acid hydrolysis. Operational simplicity, ambient temp., high yields, and diast... A highly efficient catalyst-free cycloisomerization approach to indolizinones. [作者：Kim, Ikyon;Choi, Jihyun;Lee, Sunkyung;Lee, Ge Hyeong;,期刊：SYNLETT, 页码：2334-2338 , 文章类型： 研究论文，,卷期：2008年-15] A highly efficient catalyst-free synthetic route to indolizinones was established from readily available tertiary propargylic alcs. via a facile thermally induced cycloisomerization. In addn., this transformation was fu... A catalytic asymmetric Fujiwara-Moritani cyclization. [作者：Schiffner, Julia A.;Machotta, Axel B.;Oestreich, Martin;,期刊：SYNLETT, 页码：2271-2274 , 文章类型： 研究论文，,卷期：2008年-15] An enantioselective intramol. Fujiwara-Moritani reaction involving direct C-H functionalization using modified PyOX ligands is reported for the first time. Screening of several ligand-oxidant combinations eventually pro... Synthesis of 7,8,9-trisubstituted dihydropurine derivatives via a "tert-amino effect" cyclization. [作者：Che, Xin;Zheng, Lianyou;Dang, Qun;Bai, Xu;,期刊：SYNLETT, 页码：2373-2375 , 文章类型： 研究论文，,卷期：2008年-15] 7,8,9-Trisubstituted dihydropurine derivs. were prepd. from 5-amino-4-(N,N-disubstituted)aminopyrimidines and arom. aldehydes via a cascade of reactions. The key transformation for the reaction is a [1,6]-H shift due to... Convergent synthesis of the A-J ring system of yessotoxin. [作者：Torikai, Kohei;Watanabe, Koji;Minato, Hiroaki;Imaizumi, Tomoyoshi;Murata, Michio;Oishi, Tohru;,期刊：SYNLETT, 页码：2368-2372 , 文章类型： 研究论文，,卷期：2008年-15] A highly convergent synthesis of the A-J ring system (I) of yessotoxin was achieved. A convergent strategy via a-cyano ethers was extensively applied in the assembly of the F and IJ ring fragments to afford the FGHIJ ri... Pd/C-catalyzed direct a-oxygenation of 1,3-dicarbonyl compounds using molecular oxygen. [作者：Monguchi, Yasunari;Takahashi, Tohru;Iida, Yusuke;Fujiwara, Yuta;Inagaki, Yuya;Maegawa, Tomohiro;Sajiki, Hironao;,期刊：SYNLETT, 页码：2291-2294 , 文章类型： 研究论文，,卷期：2008年-15] A hydroxyl group was readily and directly introduced into the a-position of a variety of b-dicarbonyl compds. by heterogeneous Pd/C-catalyzed oxygenation using mol. oxygen. Probing the amino-end reactivity of sulfonimidamides. [作者：Azzaro, Stephane;Fensterbank, Louis;Lacote, Emmanuel;Malacria, Max;,期刊：SYNLETT, 页码：2253-2256 , 文章类型： 研究论文，,卷期：2008年-15] The amino terminus of sulfonimidamides was functionalized through a Mitsunobu reaction. The new sulfonimidamides were engaged in oxidative reactions to provide N-heterocycles. Catalytic conjugate addition of cyanide to enones: cooperative catalysis of Ni(0) and Gd(OTf)3. [作者：Tanaka, Yuta;Kanai, Motomu;Shibasaki, Masakatsu;,期刊：SYNLETT, 页码：2295-2298 , 文章类型： 研究论文，,卷期：2008年-15] An efficient, synthetically useful catalytic conjugate addn. of cyanide to enones was developed using cooperative catalysis of Ni(0) and Gd(OTf)3. The co-catalyst, Gd(OTf)3, dramatically accelerated the reaction. The s...