scholarly journals Purines. XXXI. An X-ray crystallographic structure analysis of 3-methyladenosine p-toluene-sulfonate.

1989 ◽  
Vol 37 (5) ◽  
pp. 1208-1212 ◽  
Author(s):  
Tozo FUJII ◽  
Tohru SAITO ◽  
Tadamasa DATE
Keyword(s):  
Structure Analysis ◽  
Crystallographic Structure ◽  
X Ray ◽  
Toluene Sulfonate

scholarly journals X-ray crystallographic structure analysis of seven disease-causing mutants of human lipoamide dehydrogenase

2018 ◽  
Vol 1859 ◽  
pp. e92
Author(s):  
Eszter Szabo ◽  
Piotr Wilk ◽  
Reka Mizsei ◽  
Agnes Hubert ◽  
Zsofia Zambo ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Crystallographic Structure ◽  
X Ray ◽  
Lipoamide Dehydrogenase

Divergence in macromolecular assembly: X-ray crystallographic structure analysis of lumazine synthase from Brucella abortus11Edited by R. Huber

2000 ◽  
Vol 297 (5) ◽  
pp. 1031-1036 ◽  
Author(s):  
Bradford C Braden ◽  
C.Alejandro Velikovsky ◽  
Ana A Cauerhff ◽  
Igor Polikarpov ◽  
Fernando A Goldbaum
Keyword(s):  
Structure Analysis ◽  
Crystallographic Structure ◽  
X Ray ◽  
Macromolecular Assembly ◽  
Lumazine Synthase

Synthesis, Stability, and X-Ray Crystallographic Structure Analysis of Spiro[1H-azulenium-1,1′-cycloalkane] Ions

Tetrahedron ◽  
2000 ◽  
Vol 56 (51) ◽  
pp. 9917-9925 ◽  
Author(s):  
Mitsunori Oda ◽  
Aya Fukuta (née Sakamoto) ◽  
Takanori Kajioka ◽  
Takuya Uchiyama ◽  
Hitoshi Kainuma ◽  
...  
Keyword(s):  
Structure Analysis ◽  
Crystallographic Structure ◽  
X Ray

Novel Bromo Metabolites From a Dictyoceratid Sponge of the Cacospongia Genus

1989 ◽  
Vol 42 (5) ◽  
pp. 611 ◽  
Author(s):  
MJ Garson ◽  
DC Manker ◽  
KE Maxwell ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Structure Analysis ◽  
Absolute Configuration ◽  
Marine Sponge ◽  
Carbon Skeleton ◽  
Crystallographic Structure ◽  
X Ray ◽  
The Absolute ◽  
New Compounds

Two novel brominated metabolites, tribromocacoxanthene (3) and tetrabromocacoxanthene (4),have been isolated from a marine sponge of the Cacospongia genus (family Thorectidae ) along with 12-epideoxoscalarin (2). The structures of compounds (3), systematic name (2S,4aS,9aS)-2,7-dibromo-4a-bromomethyl-1,1-dimethyl-2,3,4,4a,9,9a-hexahydro-1H-xanthene, and (4), systematic name (2S,4aS,9aS)-2,5,7-tribromo-4a-bromomethyl-l,1-dimethyl-2,3,4,4a,9,9a-hexahydro-1H-xanthene , were deduced from analysis of 1H and 13C n.m.r. data and that of (3) was confirmed by X-ray crystallographic structure analysis which provided the absolute configuration. The two new compounds are the first tricyclic examples of a carbon skeleton previously isolated only from algae. The chemotaxonomic implication of the isolation of these new compounds is discussed.

Umsetzungen von Ferrocenyl-lithium mit Carbonyleisen-Komplexen / Reactions of Ferrocenyl Lithium with Carbonyliron Complexes

1990 ◽  
Vol 45 (4) ◽  
pp. 447-456 ◽  
Author(s):  
Max Herberhold ◽  
Wolfgang Feger ◽  
Ulf Thewalt
Keyword(s):  
Structure Analysis ◽  
Nmr Spectra ◽  
Crystallographic Structure ◽  
X Ray ◽  
Product Mixture ◽  
C Nmr

The reaction of cis-Fe(CO)4Br, with ferrocenyl lithium, FcLi, leads to the binucleara hexacarbonyldiiron complexes Fe2,(CO)6(μ-Br)(μ-CFc) (7), Fe,(CO)6(μ-COFc)2 (8) and Fe2(CO)6(μ-C2Fc2O) (9)b. Addition of FcLi to Fe(CO)5 gives the ferrocenoyl tetracarbonylferrate anion which was characterized as the salt NEt4+[Fe(CO)4(FcCO)]- (10); 9 is obtained after reaction of the anion with Meerwein’s salt, Me3O+BF4-.The reaction of Fe2(CO)9 with FcLi, followed by methylation with Me3O+BF4-, results in the formation of Fe2(CO)8[μ2-C(OMe)Fc] (11) which can be extracted from the product mixture using pentane. Chromatography of the product mixture over silica, however, leads preferentially to the formation of trinucleara complexes of the type Fe3(CO)9(μ3-COMe)(μ3-CR) (R = Fc (12), OMe (13) and O(CH2)4OMe (14)) in addition to 9; the same products are obtained starting from Fe3(CO)12. No complexes could be isolated which contained a direct iron σ-ferrocenyl bond. The structures of the new complexes were deduced from their infrared, mass, 1H and 13C NMR spectra. The bis(ferrocenoyl)-bridged compound 8 was also characterized by an X-ray crystallographic structure analysis.

The X-ray Crystallographic Structure of Human EAT2 (SH2D1B)

2016 ◽  
Vol 23 (10) ◽  
pp. 862-866 ◽  
Author(s):  
Mohammed Taha ◽  
Eric Nezerwa ◽  
Hyun-Joo Nam
Keyword(s):  
Crystallographic Structure ◽  
X Ray

Absolute Stereochemistry of (-)-Wieland-Miescher Ketone as Established by the X-ray Crystallographic and CD Exciton Chirality Methods

1992 ◽  
Vol 57 (7) ◽  
pp. 1459-1465 ◽  
Author(s):  
Nobuyuki Harada ◽  
Tatsuo Sugioka ◽  
Hisashi Uda ◽  
Takeo Kuriki
Keyword(s):  
Structure Analysis ◽  
Absolute Configuration ◽  
X Ray ◽  
The Absolute ◽  
Absolute Stereochemistry

The 8aR absolute stereochemistry of Wieland-Miescher ketone (-)-I was established by the X-ray structure analysis of its bis(4-bromobenzoate) derivatives (1R,6R,8aR)-(+)-IV and (1R,6S,8aR)-(-)-V. The absolute configuration of (-)-I was corroborated further by the application of the CD exciton chirality method to bis(4-bromobenzoates) (+)-IV and (-)-V.

scholarly journals Preparative-scale HPLC Resolution of Metallacyclic η3-Allyltricarbonyliron Complexes and Determination of the Absolute Configuration by X-Ray Crystal Structure Analysis

1999 ◽  
Vol 23 (9) ◽  
pp. 578-579
Author(s):  
Rainer Schobert ◽  
Hermann Pfab ◽  
Jutta Böhmer ◽  
Frank Hampel ◽  
Andreas Werner
Keyword(s):  
Crystal Structure ◽  
Silica Gel ◽  
Structure Analysis ◽  
Absolute Configuration ◽  
Crystal Structure Analysis ◽  
Preparative Scale ◽  
X Ray ◽  
The Absolute

Racemates of (η3-allyl)tricarbonyliron lactone complex Fe(CO)3{η1:η3-C(O)XCH2CHCMeCH2} 1a (X = O) and (η3-allyl)tricarbonyliron lactam complex 2a (X = NMe) are resolved on a preparative scale by HPLC on cellulose tris(3,5-dimethylphenyl)carbamate/silica gel RP-8 and the absolute configuration of (-)-2a is determined by X-ray crystal structure analysis.

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