Results 121 to 130 of about 142,060 (347)
Cynaratriol, a sesquiterpene lactone from Centaurea musimomum
Acta Crystallographica Section E, 2009 The title compound [systematic name: 3,8-dihydroxy-3-(hydroxymethyl)-9-methyl-6-methylenedecahydroazuleno[4,5-b]furan-2(3H)-one], C15H22O5, is a sesquiterpene lactone showing the typical tricyclic guaianolide skeleton which has been isolated, together ...
Matías López-Rodríguez +4 more
doaj +1 more source
Durable Metal‐Organic Frameworks by Covalent Hybridization with Polyurethane and Polyallophanate
Asian Journal of Organic Chemistry, EarlyView.The organic ligands in MOFs were polymerized with diisocyanate, forming polyallophanate and polyurethane networks inside single crystals of MOFs. The hybridization of brittle MOF structure and flexible polyurethane and polyallophanate resulted in highly tough MOF crystals.
Shizuka Anan, Kazuki Sada, Kenta Kokado
wiley +1 more source
Acta Pharmaceutica Sinica B, 2012 Eight new 9,10-anthraquinones (1–8) including three acetonide derivatives of 3-hydroxy-2-hydroxymethyl-9,10-anthraquinones (6–8) were isolated from an ethanol extract of the roots of Knoxia valerianoides. On the basis of chemical transformation reactions
Feng Zhao +10 more
doaj +1 more source
Substrate Range and Genetic Analysis of Acinetobacter Vanillate Demethylase [PDF]
, 2000 An Acinetobacter sp. genetic screen was used to probe structure-function relationships in vanillate demethylase, a two-component monooxygenase. Mutants with null, leaky, and heat-sensitive phenotypes were isolated.
Morawski, Birgit +2 more
core
, 2003 Two investigations were carried out with 150 g gilthead sea bream Sparus aurata to determine the relative activity of six digestive enzymes (pepsin, trypsin, chymotrypsin, carboxypeptidase A, carboxypeptidase B and amylase) and the pH variation in the ...
Agius, Carmelo +2 more
core +1 more source
Diglycerides of Natural Phenols and Organic Acids for Enhanced Biological Activities
Asian Journal of Organic Chemistry, EarlyView.Diglycerides of natural organic acids and phenols were synthesized regio‐selectively. Diglycerides are structurally similar to cell membranes and are expected to exhibit cell affinity and permeability. The flexible glycerol linkers allow the diglycerides to exhibit not only the physiological activities of each constituent organic acid but also the ...
Jisu Hong +10 more
wiley +1 more source
Molecules, 2004 A method to synthesize chiral 2,3,4-trisusbtituted tetrahydrothiophenes in both enantiomerically pure forms starting from 1-hydroxymethyl-4-phenylsulfonylbutadiene is described.
Julio G. Urones +5 more
doaj +1 more source
Acta Crystallographica Section E Structure Reports Online, 2007 The centrosymmetric title compound, C12H18O6, exhibits a three-dimensional network structure. The structure displays extensive O—H⋯O hydrogen bonding. In each molecule, two sets of three neighboring hydroxy groups are located above and below the plane defined by the central benzene ring.
Alexander Rothenberger +1 more
openaire +2 more sources
Tuning Antiaromaticity Through Meso‐Substituent Orientation in Core‐Modified Isophlorins
Asian Journal of Organic Chemistry, EarlyView.The antiaromaticity of dithiadioxaisophlorins is controlled by the steric bulkiness of meso‐substituents through their tilt angle relative to the macrocycle. Bulkier substituents maintain larger angles, preserving stronger antiaromaticity, while smaller groups facilitate π‐conjugation with the macrocycle, diminishing antiaromaticity.
Maika Isoda +3 more
wiley +1 more source
Acta Crystallographica Section E, 2013 The asymmetric unit of the title compound, 2C13H14N2O3·C3H10NO3+·Cl−, contains two independent molecules (A and B) of the title pyrimidine derivative and one ion-pair of tris(hydroxymethyl)ammonium chloride.
M. NizamMohideen +2 more
doaj +1 more source