Výsledky vyhledávání - "S. Sriman Narayanan"

Akademický článek

Development of an amperometric sensor for epinephrine determination using an Azure A/silver nanocluster modified electrode

Autor: C. Priya, S. Anuja, R. Suresh Babu, S. Sriman Narayanan

Publikováno v: Micro and Nano Systems Letters, Vol 11, Iss 1, Pp 1-10 (2023)

Abstract A novel electrochemical sensor was developed for the detection of Epinephrine (EP) utilizing Azure A (AzA), a phenothiazine dye, and citrate-capped silver nanoparticles. The interaction between Azure A and silver nanoparticles facilitated th

Externí odkaz: https://doaj.org/article/32298b57971445cc8f1f139e89fee6db

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Akademický článek

(E)-3-Hydroxy-13-methyl-16-[4-(methylsulfanyl)benzylidene]-7,8,9,11,12,13,15,16-octahydro-6H-cyclopenta[a]phenanthren-17(14H)-one

Autor: R. Murugan, S. Sriman Narayanan, V. Manivannan, B. Gunasekaran

Publikováno v: Acta Crystallographica Section E, Vol 65, Iss 1, Pp o73-o73 (2009)

In the title compound, C26H28O2S, the dihedral angles between the mean plane of the five membered ring and the 4-(methylsulfanyl)benzylidine ring in the two crystallographically independent molecules are 34.05 (10) and 40.53 (15)°. The packing is st

Externí odkaz: https://doaj.org/article/e759e9cb2ec14f91af13d054822fb30f

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Akademický článek

Ethyl 2-[4-(benzyloxy)anilino]-4-oxo-4,5-dihydrofuran-3-carboxylate

Autor: S. Sriman Narayanan, L. Sudha, E. Theboral Sugi Kamala, R. Murugan, S. Nirmala

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 12, Pp o2315-o2315 (2008)

In the title compound, C20H19NO5, the dihydrofuran ring is almost planar [maximum deviation of 0.021 (2)°] and makes dihedral angles of 28.1 (7) and 54.5 (5)° with the benzyl and phenylamino rings, respectively. The molecular packing is stabilized

Externí odkaz: https://doaj.org/article/de1c3326e39f411fb8b9c51824616610

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Akademický článek

Ethyl 3-hydroxy-13-methyl-4′-phenyl-2′-(3,4,5-trimethoxyphenyl)-6,7,8,9,11,12,13,14,15,16-decahydrospiro[cyclopenta[a]phenanthrene-16,3′-pyrrolidine]-5′-carboxylate

Autor: R. Murugan, S. Nirmala, L. Sudha, S. Sriman Narayanan, E. Theboral Sugi Kamala

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 11, Pp o2219-o2220 (2008)

In the title compound, C39H45NO7,the pyrrolidine ring is connected to an estrone group, a trimethoxy benzene and a phenyl ring. The pyrrolidine ring exhibits a twist conformation and the other five-membered ring an envelope conformation. Molecules ar

Externí odkaz: https://doaj.org/article/2e88e5ab3f7c4fe29e82858ec2c5352d

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Akademický článek

Ethyl 4′-ethenyl-2′-oxo-4-phenyl-2-(3,4,5-trimethoxyphenyl)spiro[pyrrolidine-3,3′-indoline]-5-carboxylate monohydrate

Autor: P. Ramesh, M. Sathyanarayanan, Ramalingam Murugan, S. Sriman Narayanan, M. N. Ponnuswamy

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 11, Pp o2052-o2053 (2008)

In the title compound, C31H32N2O6·H2O, the pyrrolidine ring adopts an envelope conformation. The ethyl C atoms of the ethoxycabonyl group are disordered over two positions with occupancies of ca 0.80 and 0.20. Intramolecular N—H...O hydrogen bonds

Externí odkaz: https://doaj.org/article/ebaeff7d5abd4cfd89505e040b73208a

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Akademický článek

(1′S)-4-(3,4-Dichlorophenyl)-1′-(3,5-dimethoxyphenyl)-1,2,3,4-tetrahydronaphthalene-2-spiro-2′-pyrrolizidine-3′-spiro-3′′-indoline-1,2′′-dione

Autor: S. Sriman Narayanan, L. Sudha, S. Nirmala, R. Murugan, E. Theboral Sugi Kamala

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 10, Pp o1958-o1959 (2008)

In the title compound C37H32Cl2N2O4, the unsubstituted pyrrolidine ring shows a twist conformation whereas the substituted pyrrolidine ring shows an envelope conformation. The dimethoxy benzene ring is perpendicular to the tetralone ring, making a di

Externí odkaz: https://doaj.org/article/6e21a73b19d44793bbfc1dce97b8f622

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Akademický článek

9-Ethyl-2,3-dihydro-9H-carbazol-4(1H)-one

Autor: S. Sriman Narayanan, Ramalingam Murugan, A. Subbiah Pandi, G. Ganesh, S. Murugavel

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 9, Pp o1681-o1681 (2008)

In the title compound, C28H30N2O2, the cyclohexene ring system adopts a sofa conformation. The crystal structure is stabilized by C—H...O interactions between methyl H atoms of the ethyl substituents and the O atoms of carbonyl groups of adjacent m

Externí odkaz: https://doaj.org/article/5bdfa628761847d69bf437185ca623ba

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Akademický článek

3-(4-Fluorophenyl)-1-[1′-(4-fluorophenyl)-2-oxo-5′,6′,7′,7a′-tetrahydro-1H-indole-3(2H)-spiro-3′(2′H)-1H′-pyrrolizin-2′-yl]prop-2-en-1-one

Autor: S. Sriman Narayanan, L. Sudha, E. Theboral Sugi Kamala, R. Murugan, S. Nirmala

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 9, Pp o1774-o1775 (2008)

In the title compound, C29H24F2N2O2, one of the pyrrolidine rings of the pyrrolizine system is disordered over two sites, with occupancy factors 0.734:0.266 (12). Both components of the disordered pyrrolidine ring adopt envelope conformations, wherea

Externí odkaz: https://doaj.org/article/34db02d5229b4c729f111a603cdc4137

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Akademický článek

1-[2-Oxo-1′-phenyl-2′,3′,5′,6′,7′,7a'-hexahydroindoline-3-spiro-3′-1′H-pyrrolizin-2′-yl]-3-phenylprop-2-en-1-one

Autor: S. Sriman Narayanan, L. Sudha, E. Theboral Sugi Kamala, R. Murugan, S. Nirmala

Publikováno v: Acta Crystallographica Section E, Vol 64, Iss 9, Pp o1817-o1817 (2008)

In the title compound, C29H26N2O2, 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 pyr

Externí odkaz: https://doaj.org/article/349672c1b1ab4503917602cf49051b38

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