Results 41 to 50 of about 17,768 (339)

Synthesis of 1,4-imino-L-lyxitols modified at C-5 and their evaluation as inhibitors of GH38 α-mannosidases

Beilstein Journal of Organic Chemistry, 2018
A synthetic approach to 1,4-imino-L-lyxitols with various modifications at the C-5 position is reported. These imino-L-lyxitol cores were used for the preparation of a series of N-(4-halobenzyl)polyhydroxypyrrolidines.
Maroš Bella, Sergej Šesták, Ján Moncoľ, Miroslav Koóš, Monika Poláková   +4 more
doaj   +1 more source

Asymmetric 1,3-Dipolar Cycloadditons of Stabilized Azomethine Ylides with Nitroalkenes [PDF]

, 2014
This review highlights the biological importance of many polysubstituted nitro-prolines and -pyrrolidines. Their preparation using asymmetric 1,3-dipolar cycloadditions of azomethine ylides with nitroalkenes using diastereoselective and enantioselective ...
Nájera, Carmen, Sansano, Jose M.
core   +2 more sources

Stereoselective Ag-Catalyzed 1,3-Dipolar Cycloaddition of Activated Trifluoromethyl-Substituted Azomethine Ylides [PDF]

, 2016
This is the peer reviewed version of the following article: Chemistry – A European Journal 22.14 (2016): 4952 - 4959, which has been published in final form at http://doi.org/10.1002/chem.201504869. This article may be used for non-commercial purposes in
Adrio, Adrio, Arai, Bai, Beausoleil, Begue, Belhomme, Bezdudny, Bonin, Burger, Castello, Castelló, Chaume, Cheng, Corbett, Dai, Dai, Daly, Das, Erickson, Fritz, Fujiwara, González-Esguevillas, Gouverneur, Hashimoto, He, Huang, Khangarot, Kuhnert, Laduron, Li, Li, Li, Llamas, Ma, McAlpine, Michael, Müller, Nájera, O'Hagan, Ojima, Padilla, Pandey, Pascual-Escudero, Pellissier, Pinho e Melo, Potowski, Purser, Pyne, Roughley, Sato, Schlosser, Song, Stanley, Sun, Tanaka, Tran, van Niel, Whitby, Yan, Yang, Yuan, Zhao   +62 more
core   +2 more sources

Cationic Divalent Metal Sites (M = Mn, Fe, Co) Operating As Both Nitrene-Transfer Agents And Lewis Acids Toward Mediating The Synthesis Of Three- And Five-Membered N-Heterocycles [PDF]

, 2023
The tripodal compounds [(TMG3trphen)MII-solv](PF6)2 (M = Mn, Fe, Co; solv = MeCN, DMF) and bipodal analogues [(TMG2biphen)MII(NCMe)x](PF6)2 (x = 3 for Mn, Fe; x = 2 for Co) and [(TMG2biphen)MIICl2] have been synthesized with ligands that feature a ...
Ai, Lin, Choudhury, Amitava, Harfmann, Brent, Mohapatra, Sudip, Sahoo, Suraj Kumar, Stavropoulos, Pericles, Wang, Qiuwen   +6 more
core   +2 more sources

Ring Expansion of Vinylaziridines through the Strain-Release Pericyclic Reaction: Recent Developments and Applications

Molecules, 2013
Recent syntheses of azetidines, pyrrolidines, piperidines and azepines through cycloaddition or sigmatropic rearrangements of vinylaziridines are described. Applications to natural product synthesis and mechanistic investigations are also summarized.
Yu Mi Heo, Seung-Mann Paek
doaj   +1 more source

The effects of a pyrrolidine functional group on the magnetic properties of N@C60 [PDF]

, 2006
A new stable pyrrolidine functionalized fullerene derivative, C69H10N2O2, has been synthesized, purified by high performance liquid chromatography, and characterized by MALDI mass spectrometry, ultraviolet-visible spectroscopy, Fourier transform infrared, 1H and 13C nuclear magnetic resonance. The magnetic properties of the analogous endohedral species
arxiv   +1 more source

Cellulose recycling as a source of raw chirality [PDF]

, 2013
Modern organic chemistry requires easily obtainable chiral building blocks that show high chemical versatility for their application in the synthesis of enantiopure compounds.
Biava, Hernan Daniel, Botta, María Celeste, Corne, Valeria, Giordano, Enrique David Victor, Giri, German Francisco, Llompart, David Fernando, Mangione, Maria Ines, Mata, Ernesto Gabino, Sarotti, Ariel Marcelo, Spanevello, Rolando Angel, Suarez, Alejandra Graciela   +10 more
core   +2 more sources

Asymmetric synthesis of pyrrolidine-containing chemical scaffolds via Tsuji-Trost allylation of N-tert-butanesulfinyl imines [PDF]

, 2017
A simple and efficient asymmetric synthesis of novel sp3 rich pyrrolidine chemical scaffolds over five steps starting from simple ketones is described.
Chelucci, Chen, Colyer, Davis, Elliott, Higashiyama, Leemans, Lewis, Li, Li, Lin, Liu, Manish, Meyers, O′Hagan, Reddy, Redford, Simonini, Voigtritter, Zhang   +19 more
core   +2 more sources

6b-Hydroxy-17-methyl-15-(3-nitrophenyl)-6b,7,16,17-tetrahydro-7,14a-methanonaphtho[1′,8′:1,2,3]pyrrolo[3′,2′:8,8a]azuleno[5,6-b]quinolin-14(15H)-one dichloromethane hemisolvate

IUCrData, 2016
In the title compound, C34H25N3O4·0.5CH2Cl2, which crystallized as a dichloromethane hemisolvate, the central 1-methylpyrrolidine ring adopts an envelope conformation with the N atom as the flap.
J. M. Joseph, Vijayan Viswanathan, Devadasan Velmurugan   +2 more
doaj   +1 more source

Site-Selective Modification of a Porpholactone—Selective Synthesis of 12,13- and 17,18-Dihydroporpholactones

Molecules, 2020
The reaction of meso-tetrakis(pentafluorophenyl)porpholactone with azomethine ylides and nitrones affords pyrrolidine-fused and isoxazolidine-fused dihydroporpholactones that display, respectively, isobacteriochlorin- and chlorin-type UV–Vis spectra ...
Ana F. R. Cerqueira, Gustautas Snarskis, Jonas Zurauskas, Samuel Guieu, Filipe A. Almeida Paz, Augusto C. Tomé   +5 more
doaj   +1 more source