نتایج جستجو برای: pyrrolidine

تعداد نتایج: 2347  

2014
I. S. Ahmed Farag Adel S. Girgis A. A. Ramadan A. M. Moustafa Edward R. T. Tiekink

The title compound, C30H28ClN3O2, features two spiro links, one connecting the piperidine and pyrrolidine rings, and the other connecting the pyrrolidine ring and indole residue. The configuration about the ethene bond is E. The piperidine ring adopts a half-chair conformation where the C atom connected to the spiro-C atom lies 0.713 (3) Å out of the plane of the remaining five atoms (r.m.s. de...

Journal: :Organic & biomolecular chemistry 2016
Audrey Hottin Sebastián Carrión-Jiménez Elena Moreno-Clavijo Antonio J Moreno-Vargas Ana T Carmona Inmaculada Robina Jean-Bernard Behr

A small library of divalent fucosidase inhibitors containing pyrrolidine motifs and separated by polyamino and triazole-benzylated spacers was prepared and evaluated as α-fucosidase inhibitors. Although a weak multivalent effect was observed in polyamino derived dimers, useful structural information can be deduced about the length of the bridge, the number of nitrogen atoms present and the moie...

2014
Vinodhkumar Vijayakumar Gunther H. Peters M. Suresh Raghunathan Raghavachary G. Jagadeesan

In the title compound, C27H28N2O4, the pyrrolidine ring adopts a twist conformation. The plane of the indole ring is almost perpendicular to that of the pyrrolidine ring, making a dihedral angle of 88.50 (6)°. The planes of the naphthyl ring system and the pyrrolidine ring are tilted by an angle of 55.86 (5)°. The mol-ecular conformation is stabilized by intra-molecular O-H⋯O and O-H⋯N hydrogen...

2015
Dongdong Wang Wuxia Zhang Tingting Wang Na Li Haibo Mu Jiwen Zhang Jinyou Duan Iolanda Francolini

In this study, 2-(N-pyrrolidine-alkyl) tanshinones bearing pyrrolidine groups were synthesized and the antibacterial mechanism was explored. These derivatives selectively elicited antibacterial activity against Gram-positive bacteria. Moreover, their antibacterial activities were time-, concentration-dependent and persistent. It appeared that Fenton-mediated hydroxyl radicals were involved, and...

2017
Haixia Wang Xiao-Yang Zhi Jiguo Qiu Longxiang Shi Zhenmei Lu

Sphingomonas melonis TY utilizes nicotine as a sole source of carbon, nitrogen, and energy through a variant of the pyridine and pyrrolidine pathways (VPP). A 31-kb novel nicotine-degrading gene cluster, ndp, in strain TY exhibited a different genetic organization with the vpp cluster in strains Ochrobactrum rhizosphaerae SJY1 and Agrobacterium tumefaciens S33. Genes in vpp were separated by a ...

2008
S. Nirmala R. Murugan E. Theboral Sugi Kamala L. Sudha S. Sriman Narayanan

In the title compound, C(29)H(26)N(2)O(2), one of the pyrrolidine rings in the pyrrolizine system is disordered, with site occupancies of ca 0.55 and 0.45. Both components of the disordered pyrrolidine ring adopt envelope conformations, whereas the other pyrrolidine ring adopts a twist conformation. The mol-ecules are linked into centrosymmetric dimers by N-H⋯O hydrogen bonds and the dimers are...

Journal: :Chemical & pharmaceutical bulletin 1998
M Shibano S Nakamura N Akazawa G Kusano

Two new pyrrolidine alkaloids, broussonetines G and H, were isolated from the branches of Broussonetia kazinoki SIEB. (Moraceae). Broussonetines G and H were formulated as 2 beta-hydroxymethyl-3 alpha, 4 beta-dihydroxy-5 alpha-(1-hydroxy- 6:10;10:13-diepoxytridecyl)-pyrrolidine (1) and 2 beta-hydroxymethyl-3 alpha, 4 beta-dihydroxy-5 alpha-(1-hydroxy- 5:9;9:13-diepoxytridecyl)-pyrrolidine (2), ...

2011
S. Antony Inglebert Jayabal Kamalraja Gnanasambandam Vasuki K. Sethusankar

In the title compound, C(18)H(17)N(5), the pyrrolidine ring adopts an envelope conformation. The pyrrolidine ring is disordered over two sets of sites with occupancy factors of 0.648 (6) and 0.352 (6). The dihedral angles between the pyrrolidine and pyridine rings are 14.6 (3)° for the major component and 16.2 (6)° for the ninor component. The crystal structure is stabilized by inter-molecular ...

Journal: :The University of Danang - Journal of Science and Technology 2023

Numerous heterocyclic compounds containing 3-pyrroline-2-one or pyrrolidine-2,3-dione core have been found in nature and showed valuable biological activities. Therefore, the synthesis of derivatives attracted more attention from organic chemists medicinal chemists. In this manuscript, 4-acetyl-3-hydroxy-1-(3-nitrophenyl)-5-phenyl-3-pyrroline-2-one has prepared via three-component reaction and,...

2007
Ya-Wen Wang Yu Peng

In the title mol-ecule, C(12)H(16)INO(2)S, the pyrrolidine ring is in an envelope conformation. The dihedral angle between the four essentially coplanar atoms of the pyrrolidine ring and the benzene ring is 75.5 (4)°.

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