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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57条记录   Coibacins A-D, Antileishmanial Marine Cyanobacterial Polyketides with Intriguing Biosynthetic Origins [作者：BALUNAS MARCY J; GROSSO MANUEL F; VILLA FRANCISCO A; ENGENE NICLAS; MCPHAIL KERRY L; TIDGEWELL KEVIN; PINEDA LAURA M; GERWICK LENA; SPADAFORA CARMENZA; KYLE DENNIS E; GERWICK WILLIAM H,期刊：Organic Letters, 页码：3878-3881 , 文章类型： Article，,卷期：2012年14-15] Four unsaturated polyketide lactone derivatives, coibacins A-D, were isolated from a Panamanian marine cyanobacterium, cf. Oscillatorla sp. The two different types of termini observed in these co-occurring metabolites, e... Short Synthesis of Alkyl-Substituted Acenes Using Carbonyl-Directed C-H and C-O Functionalization [作者：MATSUMURA DAIKI; KITAZAWA KENTAROH; TERAI SEIYA; KOCHI TAKUYA; LE YUTAKA; NITANI MASASHI; ASO YOSHIO; KAKIUCHI FUMITOSHI,期刊：Organic Letters, 页码：3882-3885 , 文章类型： Article，,卷期：2012年14-15] A convenient method for the synthesis of tetraalkylanthracenes and -pentacenes by means of ruthenium-catalyzed regioselective C-H alkylation of the corresponding acenequinones was developed. Dialkyldiarylpentacene was al... Synthesis of Aryl Ethers via a Sulfonyl Transfer Reaction [作者：SACH NEAL W; RICHTER DANIEL T; CRIPPS STEPHAN; TRANDUBE MICHELLE; ZHU HUICHUN; HUANG BUWEN; CUI JEAN; SUTTON SCOTT C,期刊：Organic Letters, 页码：3886-3889 , 文章类型： Article，,卷期：2012年14-15] A general synthesis of aryl ethers from primary and secondary alcohols and aryl mesylates is presented. The reaction proceeds via a sulfonyl-transfer mechanism. In this paper, we compare the sulfonyl transfer reaction to... Iridium Catalyzed Asymmetric Hydrogenation of Cyclic Imines of Benzodiazepinones and Benzodiazepines [作者：GAO KAI; WU BO; YU CHANGBIN; CHEN QINGAN; YE ZHISHI; ZHOU YONGGUI,期刊：Organic Letters, 页码：3890-3893 , 文章类型： Article，,卷期：2012年14-15] Highly enantioselective Ir-catalyzed hydrogenation of seven-membered cyclic imines of benzodiazepinones and benzodiazepines was achieved with up to 96% ee. This method provides a direct access to synthesize a range of ch... Copper-Catalyzed Sequential Ullmann N-Arylation and Aerobic Oxidative C-H Amination: A Convenient Route to Indolo[1,2-c]quinazoline Derivatives [作者：SANG PENG; XIE YONGJU; ZOU JIANWEI; ZHANG YUHONG,期刊：Organic Letters, 页码：3894-3897 , 文章类型： Article，,卷期：2012年14-15] An efficient synthesis of indolo[1,2-c]quinazoline derivatives has been developed by copper-catalyzed sequential Ullmann N-arylation and aerobic oxidative C-H amination. The protocol uses readily available 2-(2-halopheny... Synthesis of Enantiopure Dehydropiperidinones from alpha-Amino Acids and Alkynes via Azetidin-3-ones [作者：ISHIDA NAOKI; YUHKI TATSUYA; MURAKAMI MASAHIRO,期刊：Organic Letters, 页码：3898-3901 , 文章类型： Article，,卷期：2012年14-15] Chiral dehydropiperidinones were synthesized in enantiopure form from alpha-amino acids and alkynes via azetidin-3-ones. Epicatechin B-Ring Conjugates: First Enantioselective Synthesis and Evidence for Their Occurrence in Human Biological Fluids [作者：ROMANOVMICHAILIDIS FEDOR; VITON FLORIAN; FUMEAUX RENE; LEVEQUES ANTOINE; ACTISGORETTA LUCAS; REIN MAARIT; WILLIAMSON GARY; BARRON DENIS,期刊：Organic Letters, 页码：3902-3905 , 文章类型： Article，,卷期：2012年14-15] Herein, the first enantioselective total synthesis of a number of biologically relevant (-)-epicatechin conjugates is described. The success of this synthesis relied on (i) optimized conditions for the stereospecific cyc... Novel Synthesis of 5-Amino-3-bromo-1-(tert-butyl)-1H-pyrazole-4-carbonitrile: A Versatile Intermediate for the Preparation of 5-Amino-3-aryl-1-(tert-butyl)-1H-pyrazole-4-carboxamides [作者：BOBKO MARK A; KAURA ARUN C; EVANS KAREN A; SU DAISHI,期刊：Organic Letters, 页码：3906-3908 , 文章类型： Article，,卷期：2012年14-15] A simple, novel, and efficient route for the synthesis of 5-amino-3-aryl-1-(tert-butyl)-1H-pyrazole-4-carboxamides 1 has been devised. Preparation of pyrazole bromide 3 from potassium tricyanomethanide can be accomplishe... Facile Synthesis of a Library of Lyme Disease Glycolipid Antigens [作者：TWIBANIRE JEANDAMOUR K; OMRAN RAHA PARVIZI; GRINDLEY T BRUCE,期刊：Organic Letters, 页码：3909-3911 , 文章类型： Article，,卷期：2012年14-15] A library of one of the two Lyme disease antigens, BbGL1, has been synthesized in four steps from D-galactose using BF3-promoted glycosylation of the peracetate to introduce the cholesteryl beta-glycoside and TBTU-promot... Gold-Catalyzed Hydrosilyloxylation Driving Tandem Aldol and Mannich Reactions [作者：KANG DONGJIN; PARK SANGJUNE; RYU TAEKYU; LEE PHIL HO,期刊：Organic Letters, 页码：3912-3915 , 文章类型： Article，,卷期：2012年14-15] The chemoselective formation of an enolate from alkyne in the presence of a carbonyl and imine group was realized, which constructed a variety of structural motifs under exceedingly mild reaction conditions in a tandem p... Model Studies on the Synthesis of Madangamine Alkaloids. Assembly of the Macrocyclic Rings [作者：PROTO STEFANO; AMAT MERCEDES; PEREZ MARIA; BALLETTE ROBERTO; ROMAGNOLI FEDERICA; MANCINELLI ANDREA; BOSCH JOAN,期刊：Organic Letters, 页码：3916-3919 , 文章类型： Article，,卷期：2012年14-15] Using simplified model derivatives, the assembly of the macrocyclic rings of madangamines, including the 13- and 14-membered D rings of madangamlnes C-E, the all-cis-triunsaturated 15-membered D ring of madangamine A, an... A "Catch-React-Release" Method for the Flow Synthesis of 2-Aminopyrimidines and Preparation of the Imatinib Base [作者：INGHAM RICHARD J; RIVA ELENA; NIKBIN NIKZAD; BAXENDALE IAN R; LEY STEVEN V,期刊：Organic Letters, 页码：3920-3923 , 文章类型： Article，,卷期：2012年14-15] The development of a monolith-supported synthetic procedure is reported, taking advantage of flow processing and the superior flow characteristics of monolithic reagents over gel-phase beads, to allow facile access to an... Copper-Mediated Selective Cyanation of Indoles and 2-Phenylpyridines with Ammonium Iodide and DMF [作者：KIM JINHO; KIM HYUNWOO; CHANG SUKBOK,期刊：Organic Letters, 页码：3924-3927 , 文章类型： Article，,卷期：2012年14-15] Copper-mediated regioselective cyanation of indoles and 2-phenylpyridines was developed by using ammonium iodide and DMF as the combined source of a cyano unit under "Pd-free" conditions. Mechanistic studies indicate tha... Ligand-Free Suzuki Coupling of Arylboronic Acids with Methyl (E)-4-Bromobut-2-enoate: Synthesis of Unconventional Cores of HIV-1 Protease Inhibitors [作者：CHIUMMIENTO LUCIA; FUNICELLO MARIA; LUPATTELLI PAOLO; TRAMUTOLA FRANCESCO,期刊：Organic Letters, 页码：3928-3931 , 文章类型： Article，,卷期：2012年14-15] An effective ligand-free Suzuki coupling protocol to unite methyl (E)-4-bromobut-2-enoate with several arylboronic acids has been accomplished. Thus, a number of variously functionalized methyl 4-arylcrotonates have been... Two Concise Enantioselective Total Syntheses of (-)-Glabrescol Implicate Alternative Biosynthetic Pathways Starting from Squalene [作者：YANG PENG; LI PEIFANG; QU JIN; TANG LIANGFU,期刊：Organic Letters, 页码：3932-3935 , 文章类型： Article，,卷期：2012年14-15] The C-2-symmetric (-)-glabrescol was synthesized in two steps from (10S,11R)-dihydroxy-10,11-dihydrosqualene or squalene with 50% or 10% overall yields, respectively. These highly efficient and biomimetic syntheses emplo... NH4OAc Promoted Cyclocondensation of 3-(o-Allylphenyl)pentane-1,5-diones: Synthesis of Tetracyclic Benzofused 1-Azahomoisotwistanes [作者：CHANG MENGYANG; WU MINGHAO; TAI HANGYI,期刊：Organic Letters, 页码：3936-3939 , 文章类型： Article，,卷期：2012年14-15] A facile two-step synthetic route for preparing the novel tetracyclic skeleton of benzofused 2,6-diaryl-1-azahomoisotwistanes 2 had been developed. The route was carried out by a one-pot tandem cross-coupling reaction of...