This may take some time to load. Synthesis and antibacterial activity of 6( R )- and 6( S )-fluoropenibruguieramine As: Fluorine as a probe for testing the powerfulness of memory of chirality (MOC). Die the Altmetric Attention Score and how the score is calculated. Konformative Fluoreffekte in der Organokatalyse: eine neuartige Strategie zum molekularen Design. Katrin Baer, Marina KrauÃer, Edyta Burda, Werner Hummel, Albrecht Berkessel, Harald Gröger. Chenghao Zhu, Guangyang Xu, Kai Liu, Lin Qiu, Shiyong Peng, Jiangtao Sun. Niama El-Hamdouni, Xavier Companyó, Ramon Rios, Albert Moyano. Total Synthesis of Rhazinilam: Axial to Point Chirality Transfer in an Enantiospecific Pd-Catalyzed Transannular Cyclization. enolisierbaren Carbonylverbindung oder einer anderen, C-aciden Verbindung, die Anil K. Pandey, Glenn P. A. Yap, and Neal J. Zondlo . contained in this article in third party publications Efraím Reyes, Uxue Uria, Luisa Carrillo, Jose L. Vicario. Nikolay S. Zimnitskiy, Andrey D. Denikaev, Alexey Y. Barkov, Igor B. Kutyashev, Vladislav Y. Korotaev. A Noyori reduction enabled synthesis of the title compounds with excellent enantioselectivity (krel=278). ( Vital, Paulo; Hosseini, Masood; Shanmugham, M. Sundaram; Gotfredsen, Charlotte H.; Harris, Pernille; Tanner, David,, The influence of fluorine in asymmetric catalysis. We envisioned formation of the C8 ± N bond (cephalotaxine numb ering) arising from a phenethyl amine and an oxygenated carbon; either by a substitution reaction or by a reductive amination. Catalytic Stereoselective Borylative Transannular Reactions. Find more information about Crossref citation counts. Citations are the number of other articles citing this article, calculated by Crossref and updated daily. F. Vetica, J. Fronert, R. Puttreddy, K. Rissanen, D. Enders, Synthesis, 2016, Zuerst bildet sich aus dem Amin (oder Ammoniak) To get new article updates from a journal on your personalized homepage, please log in first, or sign up for a DeepDyve account if you don’t already have one.,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Require these words, in this exact order. You do not have JavaScript enabled. 3.06 Transannular Electrophilic Cyclizations, Asymmetric Synthesis of 2‐Thiocyanato‐2‐(1‐aminoalkyl)‐substituted 1‐Tetralones and 1‐Indanones with Tetrasubstituted Carbon Stereogenic Centers via Cooperative Cation‐Binding Catalysis. dearomatization and subsequent transannular Mannich re action. Homoharringtonine and its congener cephalotaxine were synthesized. Dmitry P. Ivanov, Konstantin A. Dubkov, Dmitry E. Babushkin, Sergey V. Semikolenov, Gennady I. Panov. Please enable JavaScript The iminium derivative of the aldehyde is the acceptor in the reaction. Enantioselective Catalytic Transannular Ketone–Ene Reactions. For permission to reproduce, republish and Tricyclic challenges: synthetic approaches toward dodecahydrocyclopenta[a]indenes. Keywords: ; ; We were intrigued by comparison of the cis benzo[7] annulene 4 with (+)-fastigiatine: it contains twelve of the carbon atoms and three of the stereogenic centers in the correct absolute configurations. Commun., 2009 , 1888 DOI: 10.1039/b822955d. Enantioselective Michael addition of cyclic ketones to nitroolefins catalyzed by a novel fluorine-insertion organocatalyst. Kazumasa Funabiki, Masaya Ohta, Yuta Sakaida, Kiyofumi Oida, Yasuhiro Kubota, Masaki Matsui. Z Transannular Cyclization in Natural Product Total Synthesis. This may take some time to load. endo A stereocontrolled entry to the spirocyclic core of pinnaic acid. P. Vital, M. Hosseini, M. S. Shanmugham, C. H. Gotfredsen, P. Harris and D. Tanner, Department of Chemistry, Technical University of Denmark, 201 Kemitorvet, Lyngby, Denmark, Instructions for using Copyright Clearance Center page. Stereocontrolled formal synthesis of (+/-)-platensimycin. Dhevalapally B. Ramachary, Rajasekar Sakthidevi. Mannich mit den damals verwendeten Abbaureaktionen entscheidende Hinweise. Efficient Oxa-Diels–Alder/Semipinacol Rearrangement/Aldol Cascade Reaction: Short Approach to Polycyclic Architectures. Synthesis of pyrrolidine homoazasugars and 3,4-dihydroxy-5-hydroxymethylprolines using aldol additions of metalated bislactim ethers to 2,4-O-ethylidene-d-erythroses. or in a thesis or dissertation provided that the correct acknowledgement is given Sequenzielle und modulare Synthese von chiralen 1,3-Diolen mit zwei Stereozentren: Zugang zu allen vier Stereoisomeren durch Kombination von Organo- und Biokatalyse. (+)-Fastigiatine was assembled in six steps from (R)-5-methylcyclohex-2-en-1-one. All the latest content is available, no embargo periods. Adrien Quintard, Jean-Baptiste Langlois, Daniel Emery, Jiri Mareda, Laure Guénée, Alexandre Alexakis. Olga Blanco, Cristina Pato, María Ruiz, Vicente Ojea. Authors contributing to RSC publications (journal articles, books or book chapters) }, author={Paulo Vital and Masood Hosseini and Meenakshi Sundaram Shanmugham and Charlotte Held Gotfredsen and Pernille Harris and David Tanner}, journal={Chemical communications}, year={2009}, … @article{Vital2009PolycyclicAV, title={Polycyclic alkaloids via transannular Mannich reactions. Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals. Tse-Lok Ho, Mary Fieser, Louis Fieser, Rick Danheiser, William Roush. Efraím Reyes, Uxue Uria, Luisa Carrillo, Jose L. Vicario. Each step builds core bonds, and combined with a minimalist protecting group strategy, this approach led to a very concise synthesis. Catalytic, asymmetric transannular aldolizations: total synthesis of (+)-hirsutene. Fax: +45 45933968. However, an optimal method to construc t the Intramolecular [1 + 4 + 1] Cycloaddition: Establishment of the Method. DOI: 10.1039/b822955d. nicht-enolisierbaren Carbonylverbindung wie Formaldehyd mit einem Amin und einer Soc., 2004, 126, 3734-3735. seinem Namen als Mannich-Kondensation oder Mannich-Reaktion bekannt ist, konnten The utility of our reaction has been demonstrated in a total synthesis of (+)-hirustene. Transannular reactions in asymmetric total synthesis.