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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   Alkylation reactions using a galactose-based b-keto ester enolate and conversion into b-C-galactosides. [作者：Mondal, Dhananjoy;Schweizer, Frank;,期刊：SYNLETT, 页码：2475-2478 , 文章类型： 研究论文，,卷期：2008年-16] A de novo approach for the synthesis of biol. important C-galactosides, e.g. I, has been achieved via use of an acyclic galactose-derived b-keto ester. The b-keto ester enolate serves as a C-nucleophile and reacts with ... Total synthesis of largazole and its biological evaluation. [作者：Numajiri, Yoshitaka;Takahashi, Takashi;Takagi, Motoki;Shin-ya, Kazuo;Doi, Takayuki;,期刊：SYNLETT, 页码：2483-2486 , 文章类型： 研究论文，,卷期：2008年-16] A total synthesis of largazole was achieved. The optically active b-hydroxycarbonyl unit was prepd. from modified Nagao's N-acetylthiazolidinethione. A 4-methylthiazoline-thiazole amino ester was prepd. by both a step-... Synthesis of a xylo-puromycin analogue. [作者：Michel, Benoit Y.;Krishnakumar, Kollappillil S.;Strazewski, Peter;,期刊：SYNLETT, 页码：2461-2464 , 文章类型： 研究论文，,卷期：2008年-16] N6-Bis-demethylated xylo-puromycin analog I was synthesized through 6 steps in 56% yield from adenosine, involving a Mattocks bromoacetylation, a regio- and stereoselective ribo-epoxide ring opening with NaN3, and an eff... Stereocontrolled synthesis of the tetracyclic core framework of (-)-lemonomycin. [作者：Siengalewicz, Peter;Brecker, Lothar;Mulzer, Johann;,期刊：SYNLETT, 页码：2443-2446 , 文章类型： 研究论文，,卷期：2008年-16] In a convergent approach, the advanced intermediate I (Fmoc = fluorenylmethoxycarbonyl) in a projected total synthesis of the alkaloid (-)-lemonomycin was prepd. from readily available starting materials. The key transfo... Synthesis of L-cladinose using enantioselective desymmetrization. [作者：Kim, Hyoung Cheul;Youn, Joo-Hack;Kang, Sung Ho;,期刊：SYNLETT, 页码：2526-2528 , 文章类型： 研究论文，,卷期：2008年-16] L-Cladinose (I), a neutral sugar found in erythromycins and azithromycins, was synthesized efficiently using enantioselective monobenzoylation of 2-propenylglycerol in the presence of imine-CuCl2 catalysts to elaborate t... Novel synthetic approach to nine-membered diallylic amides: stereochemical behavior and utility as chiral building block. [作者：Tomooka, Katsuhiko;Suzuki, Masaki;Uehara, Kazuhiro;Shimada, Maki;Akiyama, Toshiyuki;,期刊：SYNLETT, 页码：2518-2522 , 文章类型： 研究论文，,卷期：2008年-16] An efficient approach to 9-membered diallylic cyclic amides having a variety of substituents was developed. The synthesized amides have stable planar chirality at ambient temp. The transformation of the enantiomericall... A novel intramolecular palladium-mediated cyclization for the synthesis of substituted 2-(aryl- or benzylamino)-4H-1,3-benzothiazines. [作者：Orain, David;Blumstein, Anne-Catherine;Tasdelen, Engin;Haessig, Samuel;,期刊：SYNLETT, 页码：2433-2436 , 文章类型： 研究论文，,卷期：2008年-16] Synthesis of 2-aryl/benzylamino-4H-1,3-benzothiazine derivs. was achieved via an unprecedented intramol. palladium cyclization for creating a sulfur-aryl bond. A straightforward synthesis of enantiopure 2,6-disubstituted morpholines by a regioselective O-protection/activation protocol. [作者：Penso, Michele;Lupi, Vittoria;Albanese, Domenico;Foschi, Francesca;Landini, Dario;Tagliabue, Aaron;,期刊：SYNLETT, 页码：2451-2454 , 文章类型： 研究论文，,卷期：2008年-16] Enantiopure 2,6-disubstituted morpholines were synthesized through the ring opening of chiral, nonracemic oxiranes with N nucleophiles, under solid-liq. phase-transfer catalysis (SL-PTC) conditions. The b-hydroxy tosyla... A convenient synthesis of highly substituted 3-N,N-dialkylamino-1,2,4-triazoles. [作者：Batchelor, David V.;Beal, David M.;Brown, T. Bruce;Ellis, David;Gordon, David W.;Johnson, Patrick S.;Mason, Helen J.;Ralph, Michael J.;Underwood, Toby J.;Wheeler, Simon;,期刊：SYNLETT, 页码：2421-2424 , 文章类型： 研究论文，,卷期：2008年-16] The title compds. are prepd. from S-methylisothioureas and acyl hydrazides in moderate to good yields. The reaction is characterized by relatively mild conditions and very broad functional group tolerance. Generation of arylcyclopenta-1,3-dienes from cyclopenteno-spiro-benzosultams: synthesis of 2-arylnorbornenes. [作者：Modrzejewska, Helena;Wojciechowski, Krzysztof;,期刊：SYNLETT, 页码：2465-2470 , 文章类型： 研究论文，,卷期：2008年-16] Aza-ortho-xylylenes generated by thermal extrusion of SO2 from cyclopenteno-spiro-benzisothiazoline 2,2-dioxides undergo [1,5]-sigmatropic H shift leading to unstable arylcyclopentadienes, which can be trapped with dieno... A new synthesis of hemialdals and their stereoselective tandem reaction in the construction of 1,3-dioxolane derivatives. [作者：Shao, Qiyun;Li, Chunbao;,期刊：SYNLETT, 页码：2412-2416 , 文章类型： 研究论文，,卷期：2008年-16] A new synthesis for hemialdals, (RCOCHOH)2O (R = aryl), by directly oxidizing acetophenones using DMSO and a catalytic amt. of I2 is reported. A tandem reaction between these hemialdals and a-bromo ketones using Et3N as... An approach to benzannelated [5,6]-spiroketals. [作者：Bray, Christopher D.;,期刊：SYNLETT, 页码：2500-2502 , 文章类型： 研究论文，,卷期：2008年-16] Heating a variety of 2-hydroxybenzyl acetates bearing a range of functional groups on the 4- or 5-position of the arom. ring at 100?in neat g-methylene-g-butyrolactone (1.0 M) for 20 h gives a series of benzannelated [5,... Preparation and some synthetic applications of 2-hydroxyethyl-substituted cyclopropylamines. [作者：Joosten, Antoine;Vasse, Jean-Luc;Bertus, Philippe;Szymoniak, Jan;,期刊：SYNLETT, 页码：2455-2458 , 文章类型： 研究论文，,卷期：2008年-16] Primary cyclopropylamines bearing hydroxy side chains were obtained by Ti-mediated coupling of nitriles and homoallylic alcs. Their usefulness as synthetic intermediates was demonstrated by the prepn. of a constrained g... Silver(I) versus gold(I) catalysis in benzannulation reaction: a versatile access to acridines. [作者：Godet, Thomas;Belmont, Philippe;,期刊：SYNLETT, 页码：2513-2517 , 文章类型： 研究论文，,卷期：2008年-16] A Ag/Au-catalyzed benzannulation reaction is described. In the presence of catalytic amts. of Au and/or Ag salts, the reaction of silyl enol ethers onto alkynes occurs under mild conditions to produce the corresponding ... A stable synthetic equivalent of 2,3-dihydropyridine. [作者：Born, Stephen;Kobayashi, Yoshihisa;,期刊：SYNLETT, 页码：2479-2482 , 文章类型： 研究论文，,卷期：2008年-16] A synthetic procedure for a 2,3-dihydropyridine from its stable synthetic equiv. I is introduced. The synthesis of a chiral 2,3-dihydropyridine in a high yield and the unique mechanism of the unmasking step are describe... Synthesis of 3-fluoro-2,5-disubstituted furans and further derivative reactions to access fluorine-containing 3,3'-bifurans and tetrasubstituted furans. [作者：Li, Peng;Chai, Zhuo;Zhao, Gang;Zhu, Shi-Zheng;,期刊：SYNLETT, 页码：2547-2551 , 文章类型： 研究论文，,卷期：2008年-16] 2,5-Disubstituted 3-fluorofurans were synthesized in 42-99% yield via DBU-promoted cyclization of electron-deficient gem-difluorohomopropargyl alcs. Starting from these compds., a series of fluorinated 3,3'-bifurans and...