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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72条记录   Protein Plasticity: A Single Amino Acid Substitution in the Saccharomyces cerevisiae Oxidosqualene-Lanosterol Cyclase Generates Protosta-13(17),24-dien-3b-ol, a Rearrangement Product. [作者：Wu, Tung-Kung;Wen, Hao-Yu;Chang, Cheng-Hsiang;Liu, Yuan-Ting;,期刊：Organic Letters, 页码：2529-2532 , 文章类型： 研究论文，,卷期：2008年10-12] oxidosqualene-lanosterol cyclase (ERG7) from Saccharomyces cerevisiae, the Phe699 was exchanged against hydrophilic polar uncharged residues Ser, Thr, Cys, Gln, and Tyr to characterize its product profile and functional ... Formation of enantiopure 5-substituted oxazolidinones through enzyme-catalyzed kinetic resolution of epoxides. [作者：Elenkov, Maja Majeric;Tang, Lixia;Meetsma, Auke;Hauer, Bernhard;Janssen, Dick B.;,期刊：Organic Letters, 页码：2417-2420 , 文章类型： 研究论文，,卷期：2008年10-12] Halohydrin dehalogenase from Agrobacterium radiobacter catalyzed the enantioselective ring opening of terminal epoxides with cyanate as a nucleophile, yielding 5-substituted oxazolidinones in high yields and with high en... A mild, one-pot synthesis of 4-quinolones via sequential Pd-catalyzed amidation and base-promoted cyclization. [作者：Huang, Jinkun;Chen, Ying;King, Anthony O.;Dilmeghani, Mina;Larsen, Robert D.;Faul, Margaret M.;,期刊：Organic Letters, 页码：2609-2612 , 文章类型： 研究论文，,卷期：2008年10-12] A mild, one-pot synthesis of 4-quinolones is described. Under the optimal conditions, a variety of 2-substituted 4-quinolones were synthesized via sequential palladium-catalyzed amidation of 2'-bromoacetophenones follow... Palladium-catalyzed b-allylation of 2,3-disubstituted indoles. [作者：Kagawa, Natsuko;Malerich, Jeremiah P.;Rawal, Viresh H.;,期刊：Organic Letters, 页码：2381-2384 , 文章类型： 研究论文，,卷期：2008年10-12] A direct C3-functionalization of 2,3-disubstituted indoles was developed. Under palladium-phosphine catalyst, the b-allylation of 2,3-disubstituted indole derivs. with allyl carbonates was carried out smoothly with good... Orthoplatinated Triarylphosphite as a Highly Efficient Catalyst for Addition Reactions of Arylboronic Acids with Aldehydes: Low Catalyst Loading Catalysis and a New Tandem Reaction Sequence. [作者：Liao, Yuan-Xi;Xing, Chun-Hui;He, Ping;Hu, Qiao-Sheng;,期刊：Organic Letters, 页码：2509-2512 , 文章类型： 研究论文，,卷期：2008年10-12] Readily available, air/moisture-stable orthoplatinated triarylphosphite catalyzes the addn. reactions of arylboronic acids with aldehydes with the catalyst loading as low as 0.01%. It also catalyzes a new tandem reactio... A useful Pd-catalyzed Negishi coupling approach to benzylic sulfonamide derivatives. [作者：Zhou, Gang;Ting, Pauline;Aslanian, Robert;Piwinski, John J.;,期刊：Organic Letters, 页码：2517-2520 , 文章类型： 研究论文，,卷期：2008年10-12] A mild catalytic system to access diversely functionalized benzylic sulfonamides has been developed. Palladium-catalyzed a-arylation by Negishi cross-coupling of sulfonamide-stabilized anions and a wide range of aryl io... Folding of Long-Chain Alkanediammonium Ions Promoted by a Cucurbituril Derivative. [作者：Huang, Wei-Hao;Zavalij, Peter Y.;Isaacs, Lyle;,期刊：Organic Letters, 页码：2577-2580 , 文章类型： 研究论文，,卷期：2008年10-12] We report the isolation and characterization of two top-bottom differentiated CB[n]-type receptors, namely ns-CB[6] and cucurbituril deriv. 2, which display diastereoselective recognition toward unsym. guests. Compd. 2 ... Tube and Cage C60H60: A Comparison with C60F60. [作者：Jia, Jianfeng;Wu, Hai-Shun;Xu, Xiao-Hong;Zhang, Xian-Ming;Jiao, Haijun;,期刊：Organic Letters, 页码：2573-2576 , 文章类型： 研究论文，,卷期：2008年10-12] cage isomer (1) with isolated five-membered rings. Introduction of endo C-H bonds into structure 5 results in further stabilization, but the most stable tube structure with four endo C-H bonds (7) is higher in by 74.2 k...