Results 31 to 40 of about 839,062 (317)

Absolute configuration of (1S,2S)-3-methyl-2-phenyl-2,3-dihydrothiazolo[2,3-b]quinazolin-5-one

open access: yesActa Crystallographica Section E, 2012
The absolute structure of the molecule in the crystal of the title compound, C17H14N2OS, was determined by the refinement of the Flack parameter to 0.0 (2) based on 1011 Friedel pairs.
Mostafa. M. Ghorab   +4 more
doaj   +1 more source

Pd-catalyzed enantioselective aerobic oxidation of secondary alcohols: Applications to the total synthesis of alkaloids [PDF]

open access: yes, 2008
Enantioselective syntheses of the alkaloids (-)-aurantioclavine, (+)-amurensinine, (-)-lobeline, and (-)- and (+)-sedamine are described. The syntheses demonstrate the effectiveness of the Pd-catalyzed asymmetric oxidation of secondary alcohols in ...
Bagdanoff, Jeffrey T.   +5 more
core   +2 more sources

Absolute configuration of (2S)-4-(4-hydroxyphenyl)butan-2-ol

open access: yesActa Crystallographica Section E, 2011
The title compound, C10H14O2, was isolated from the chloroform extract of Taxus wallichiana Zucc. In the crystal, molecules are linked by intermolecular O—H...O hydrogen bonds, forming sheets parallel to (100).
S. Yousuf   +4 more
doaj   +1 more source

Absolute Configuration of Clemateol

open access: yesJournal of the Brazilian Chemical Society, 2017
Fil: Stivanin, Mateus L..
Pedroso, Marcelo   +9 more
openaire   +2 more sources

Chiroptical studies on brevianamide B : vibrational and electronic circular dichroism confronted [PDF]

open access: yes, 2015
Chiroptical spectroscopy, such as electronic circular dichroism (ECD) and vibrational circular dichroism (VCD) are highly sensitive techniques to probe molecular conformation, configuration, solvation and aggregation.
Bultinck, Patrick   +7 more
core   +2 more sources

The molecular and crystal structure of (+)-mianserin hydrobromide [PDF]

open access: yes, 1973
X-ray analysis of crystals of (+)-mianserin hydrobromide (1,2,3,4,10,14b-hexahydro-2-methyl-dibenzol[c,f]pyrazino[1,2-a]azepine) has established the stereochemistry and absolute configuration of this compound (S at 14b).\ud \ud The crystals are ...
Feil, D., Ru, C. van
core   +3 more sources

Asymmetric microbial reduction of ketones: absolute configuration of trans-4-ethyl-1-(1S-hydroxyethyl)cyclohexanol [PDF]

open access: yes, 2009
A set of five fungal species, Botrytis cinerea, Trichoderma viride and Eutypa lata, and the endophytic fungi Colletotrichum crassipes and Xylaria sp., was used in screening for microbial biocatalysts to detect monooxygenase and alcohol dehydrogenase ...
Aleu Casatejada, Josefina   +4 more
core   +2 more sources

Redetermination and absolute configuration of berkeleydione

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The crystal structure of the title compound, berkeleydione [systematic name; (5aS,7R,9S,11R,11aS)-methyl 9-hydroxy-1,1,5,7,9,11a-hexamethyl-14-methylidene-3,8,10-trioxo-1,3,4,5a,6,7,8,9,10,11,11a,12-dodecahydro-7,11-methanocycloocta[4,5]cyclohepta[1,2-c ...
Andrea Stierle   +2 more
doaj   +1 more source

Spacecraft Position and Attitude Formation Control using Line-of-Sight Observations [PDF]

open access: yes, 2014
This paper studies formation control of an arbitrary number of spacecraft based on a serial network structure. The leader controls its absolute position and absolute attitude with respect to an inertial frame, and the followers control its relative ...
Lee, Taeyoung, Wu, Tse-Huai
core   +1 more source

Redetermination and absolute configuration of atalaphylline

open access: yesActa Crystallographica Section E, 2010
The title acridone alkaloid [systematic name: 1,3,5-trihydroxy-2,4-bis(3-methylbut-2-enyl)acridin-9(10H)-one], C23H25NO4, has previously been reported as crystallizing in the chiral orthorhombic space group P212121 [Chantrapromma et al. (2010).
Hoong-Kun Fun   +2 more
doaj   +1 more source

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