CRYSTAL STRUCTURE AND ABSOLUTE CONFIGURATION OF 28-O-ACETYLBETULIN

2016 ◽  
Vol 57 (1) ◽  
Keyword(s):  
Crystal Structure ◽  
Absolute Configuration

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.

The x-ray crystal structure, resolution and absolute configuration of thecis-?-dichloro(1, 8-diamino-3, 6-diazaoctane)-ruthenium(III) cation

1987 ◽  
Vol 12 (4) ◽  
pp. 361-365 ◽  
Author(s):  
John A. Broomhead ◽  
Nishat A. Pasha ◽  
Carol A. Soloff ◽  
Will L. Steffen ◽  
Meta Sterns
Keyword(s):  
Crystal Structure ◽  
Absolute Configuration ◽  
X Ray

The crystal structure and absolute configuration of cedryl chromate

1972 ◽  
Vol 28 (5) ◽  
pp. 1340-1345 ◽  
Author(s):  
V. Amirthalingam ◽  
D. F. Grant ◽  
A. Senol
Keyword(s):  
Crystal Structure ◽  
Absolute Configuration

The crystal structure of 3-epicaryoptin and the reversal of the currently accepted absolute configuration of clerodin

1979 ◽  
pp. 97-99 ◽  
Author(s):  
Donald Rogers ◽  
Gülten G. Ünal ◽  
David J. Williams ◽  
Steven V. Ley ◽  
George A. Sim ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Absolute Configuration

Absolute configuration determination of theanti-head-to-head photocyclodimer of anthracene-2-carboxylic acid through cocrystallization withL-prolinol

2013 ◽  
Vol 69 (11) ◽  
pp. 1411-1413 ◽  
Author(s):  
Yuko Kawanami ◽  
Hidekazu Tanaka ◽  
Jun-ichi Mizoguchi ◽  
Nobuko Kanehisa ◽  
Gaku Fukuhara ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Circular Dichroism ◽  
Carboxylic Acid ◽  
Absolute Configuration ◽  
Void Space ◽  
Circular Dichroism Spectra ◽  
The Absolute ◽  
Circular Dichroïsm ◽  
Hydrogen Bonded

The absolute configuration has been established of the enantiopureanti-head-to-head cyclodimer of anthracene-2-carboxylic acid (AC) cocrystallized with L-propinol and dichloromethane [systematic name: (S)-2-(hydroxymethyl)pyrrolidin-1-ium (5R,6S,11R,12S)-8-carboxy-5,6,11,12-tetrahydro-5,12:6,11-bis([1,2]benzeno)dibenzo[a,e][8]annulene-2-carboxylate dichloromethane monosolvate], C5H12NO+·C30H19O4−·CH2Cl2. In the crystal structure, the AC dimer interacts with L-prolinol through a nine-membered hydrogen-bonded ring [R22(9)], while the dichloromethane molecule is incorporated to fill the void space. The absolute configuration determined in this study verifies a recent assignment made by comparing theoreticalversusexperimental circular dichroism spectra.

(3R,4R)-(–)-3-Hydroxymethyl-4-phenyl-2-o-toluoyl-1,2,3,4-tetrahydroisoquinoline

2006 ◽  
Vol 62 (5) ◽  
pp. o1774-o1776 ◽  
Author(s):  
Andrzej Gzella ◽  
Maria Chrzanowska ◽  
Agnieszka Dreas ◽  
Michał S. Kaczmarek ◽  
Zenon Woźniak
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Absolute Configuration ◽  
Title Compound ◽  
Phenyl Ring ◽  
Heterocyclic Ring ◽  
Hydroxymethyl Group ◽  
Envelope Conformation ◽  
Compound C ◽  
The Absolute

The absolute configuration of the title compound, C24H23NO2, has been confirmed as 3R,4R. The hydroxymethyl group and phenyl ring at the asymmetric C atoms exhibit α and β orientations, respectively, and the non-planar heterocyclic ring of the tetrahydroisoquinoline system adopts an envelope conformation. The crystal structure is stabilized through hydrogen bonds.

scholarly journals Incensfuran: isolation, X-ray crystal structure and absolute configuration by means of chiroptical studies in solution and solid state

RSC Advances ◽  
2017 ◽  
Vol 7 (67) ◽  
pp. 42357-42362 ◽  
Author(s):  
Najeeb Ur Rehman ◽  
Hidayat Hussain ◽  
Sulaiman Al-Shidhani ◽  
Satya Kumar Avula ◽  
Ghulam Abbas ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Absolute Configuration ◽  
X Ray ◽  
Crude Extracts ◽  
Boswellia Papyrifera

A new cembrane diterpene named incensfuran (1), biogenetically derived from incensole (2), was isolated from crude extracts of the Boswellia papyrifera Hochst.

scholarly journals Walden Inversion. II. The Crystal Structure and Absolute Configuration of Cobalt(II) (-)-Malate Trihydrate.

1972 ◽  
Vol 26 ◽  
pp. 2349-2359 ◽  
Author(s):  
Lars Kryger ◽  
Svend Erik Rasmussen ◽  
Finn R. Forgaard ◽  
Arne Haaland ◽  
Sigfrid Svensson
Keyword(s):  
Crystal Structure ◽  
Absolute Configuration
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