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Beyond the Dimer and Trimer: Tetraspiro[2.1.2(5).1.2(9).1.2(13).1(3)] hexadecane-1,3,5,7-tetraone--the Cyclic Tetramer of Carbonylcyclopropane.

Chemistry (Weinheim an der Bergstrasse, Germany)

Sedenkova KN, Averina EB, Grishin YK, Andriasov KS, Stepanova SA, Roznyatovsky VA, Kutateladze AG, Rybakov VB, Albov DV, Kuznetsova TS, Zefirov NS.
PMID: 26762227
Chemistry. 2016 Mar 14;22(12):3996-9. doi: 10.1002/chem.201600140. Epub 2016 Feb 03.

Tetraspiro[2.1.2(5).1.2(9).1.2(13).1(3)]hexadecane-1,3,5,7-tetraone 4, a unique tetraketone containing a cyclooctane core and four spiroannelated cyclopropane moieties, represents the previously unknown cyclotetramer of carbonylcyclopropane. For this purpose oxidation of the parent polyspirocyclic hydrocarbon was examined under various oxidative conditions, and the reactivity...

Complete Genome Sequence of Paenibacillus polymyxa Strain Sb3-1, a Soilborne Bacterium with Antagonistic Activity toward Plant Pathogens.

Genome announcements

Rybakova D, Wetzlinger U, Müller H, Berg G.
PMID: 25767224
Genome Announc. 2015 Mar 12;3(2). doi: 10.1128/genomeA.00052-15.

The genome of Paenibacillus polymyxa Sb3-1, a strain that shows antagonistic activities against pathogenic fungi and bacteria, consists of one 5.6-Mb circular chromosome and two plasmids of 223 kb and 8 kb. The genome reveals several genes that potentially...

Control of morphology and formation of highly geometrically confined magnetic skyrmions.

Nature communications

Jin C, Li ZA, Kovács A, Caron J, Zheng F, Rybakov FN, Kiselev NS, Du H, Blügel S, Tian M, Zhang Y, Farle M, Dunin-Borkowski RE.
PMID: 28580935
Nat Commun. 2017 Jun 05;8:15569. doi: 10.1038/ncomms15569.

The ability to controllably manipulate magnetic skyrmions, small magnetic whirls with particle-like properties, in nanostructured elements is a prerequisite for incorporating them into spintronic devices. Here, we use state-of-the-art electron holographic imaging to directly visualize the morphology and nucleation...

From Umpolung to Alternation: Modified Reactivity of Donor-Acceptor Cyclopropanes Towards Nucleophiles in Reaction with Nitroalkanes.

Chemistry (Weinheim an der Bergstrasse, Germany)

Budynina EM, Ivanov KL, Chagarovskiy AO, Rybakov VB, Trushkov IV, Melnikov MY.
PMID: 26880270
Chemistry. 2016 Mar 07;22(11):3692-6. doi: 10.1002/chem.201504593. Epub 2016 Feb 16.

A conceptually new type of donor-acceptor cyclopropane reactivity towards nucleophiles has been disclosed. An essential characteristic of the process is an unusual nucleophilic attack on the C(3)-position of a cyclopropane, combined with typical small ring-opening by cleavage of the...

4-Benzyl-3-[(1-oxidoethylidene)amino]-1-phenyl-4,5-dihydro-1H-1,2,4-triazol-5-iminium.

Acta crystallographica. Section E, Structure reports online

Chernyshev VM, Mazharova AG, Rybakov VB.
PMID: 21754149
Acta Crystallogr Sect E Struct Rep Online. 2011 Apr 01;67:o870-1. doi: 10.1107/S1600536811006751. Epub 2011 Mar 12.

The title compound, C(17)H(17)N(5)O, exists in the zwitterionic form with the amide group deprotonated. The mean planes of the 1,2,4-triazole and N-phenyl rings form a dihedral angle of 39.14 (8)°. The N atom of the amino group adopts a...

Tris(ethane-1,2-diamine)copper(II) bis-(trifluoro-acetate).

Acta crystallographica. Section E, Structure reports online

Karpova EV, Zakharov MA, Boltalin AI, Rybakov VB.
PMID: 21201328
Acta Crystallogr Sect E Struct Rep Online. 2008 Jan 18;64:m373. doi: 10.1107/S1600536808001438.

In the title complex, [Cu(H(2)NCH(2)CH(2)NH(2))(3)](CF(3)COO)(2), the environment of the Cu atom is distorted octa-hedral, formed by six N atoms from three chelating ethane-1,2-diamine ligands. The Cu-N distances range from 2.050 (2) to 2.300 (2) Å. This complex cation and...

2-(4-Meth-oxy-phen-yl)-4H-1,3,2-benzoxathia-phosphinine 2-sulfide.

Acta crystallographica. Section E, Structure reports online

Osyanin VA, Ivleva EA, Rybakov VB, Klimochkin YN.
PMID: 21523063
Acta Crystallogr Sect E Struct Rep Online. 2011 Jan 15;67:o388-9. doi: 10.1107/S1600536810053146.

The asymmetric unit of the title compound, C(14)H(13)O(2)PS(2), contains two crystallographically independent mol-ecules, which differ in the conformation of the 1,3,2-benzoxathia-phosphinine moieties (screw boat in the first mol-ecule and envelope in the second mol-ecule). In the crystal, neither classical...

7-(4-Methyl-phen-yl)cyclo-penta-[a]quinolizine-10-carbaldehyde.

Acta crystallographica. Section E, Structure reports online

Rybakov VB, Gormay PV, Babaev EV.
PMID: 21589126
Acta Crystallogr Sect E Struct Rep Online. 2010 Oct 30;66:o2958. doi: 10.1107/S1600536810042467.

In the title compound, C(20)H(15)NO, the heterotricycle is essential planar [maximum deviation = 0.0790 (5) Å] and makes a dihedral angle of 50.70 (2)° with the benzene ring. The formyl group is almost coplanar with the tricyclic ring, the...

(1R,3R,3aS,8aR)-4-Oxo-3-phenyl-1-[(1R)-1-phenyl-eth-yl]deca-hydro-cyclo-hepta-[b]pyrrol-1-ium bromide.

Acta crystallographica. Section E, Structure reports online

Rybakov VB, Belov DS, Lukyanenko ER, Kurkin AV, Yurovskaya MA.
PMID: 22798884
Acta Crystallogr Sect E Struct Rep Online. 2012 Jul 01;68:o2227. doi: 10.1107/S1600536812028073. Epub 2012 Jun 27.

The title chiral compound, C(23)H(28)NO(+)·Br(-), was obtained from an optically active amino-ethanol precursor. The pyrrolidine heterocycle has an envelope conformation, with the C atom α-positioned with respect to the keto group deviating by 0.570 (6) Å from the mean...

Vertical distribution of megafauna on the Bering Sea slope based on ROV survey.

PeerJ

Rybakova E, Galkin S, Gebruk A, Sanamyan N, Martynov A.
PMID: 32175187
PeerJ. 2020 Mar 02;8:e8628. doi: 10.7717/peerj.8628. eCollection 2020.

Video surveys were carried out during the 75th cruise of the RV

Correction to: Microbiome definition re-visited: old concepts and new challenges.

Microbiome

Berg G, Rybakova D, Fischer D, Cernava T, Vergès MC, Charles T, Chen X, Cocolin L, Eversole K, Corral GH, Kazou M, Kinkel L, Lange L, Lima N, Loy A, Macklin JA, Maguin E, Mauchline T, McClure R, Mitter B, Ryan M, Sarand I, Smidt H, Schelkle B, Roume H, Kiran GS, Selvin J, de Souza RSC, van Overbeek L, Singh BK, Wagner M, Walsh A, Sessitsch A, Schloter M.
PMID: 32819450
Microbiome. 2020 Aug 20;8(1):119. doi: 10.1186/s40168-020-00905-x.

An amendment to this paper has been published and can be accessed via the original article.

3-Hy-droxy-2,2-bis-(1H-pyrazol-1-yl)-cyclo-penta-none.

Acta crystallographica. Section E, Structure reports online

Rybakov VB, Utkina AA, Kurkin AV, Yurovskaya MA.
PMID: 22412705
Acta Crystallogr Sect E Struct Rep Online. 2012 Mar 01;68:o844. doi: 10.1107/S1600536812007659. Epub 2012 Feb 24.

The title compound, C(11)H(12)N(4)O(2), was unexpectedly obtained in the reaction of α,α'-disubstituted cyclo-penta-none with 1,1,3,3-tetra-meth-oxy-propane in the presence of dioxane saturated with HCl. It belongs to a previously unknown class of gem-bihetaryl ketones which may be useful for screening...

Showing 1 to 12 of 61 entries