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Helicobacter pylori(H. pylori) infection is the most common bacterial infection worldwide. Persistent infection of the g......
Irritable bowel syndrome(IBS),with the prevalence of 10%-20 % of the population has become an emerging problem worldwide......
Patatin-like phospholipase domain-containing 3(PNPLA3 or adiponutrin) displays anabolic and catabolic activities in lipi......
Crohn’s disease and ulcerative colitis are two important categories of human inflammatory bowel disease(IBD). Because t......
In the high-speed maglev system,accurate real-time information of the train position is essential forstable,safe and ef......
Two new sapogenins,named(20S,24R)-3β,20,21β,25-tetrahydroxy-21,24-cyclodammarane(1)and 3β-hydroxyetio-17β-dammaranic......
A new triterpene saponin with 28-nor-urs-12(13),18(17)-dien-3β-ol as aglycone,named ilexsaponin C(1) was isolated from ......
A novel flavanol bearing phenylpropionic acid moiety at C-4 through a C-C bonding,named brainin A(1),was isolated from t......
Impurity analysis of gentamicin bulk samples by improved liquid chromatography-ion trap mass spectro
Several gentamicin bulk samples from different origins were investigated using an LC/MS method.LC equipped with ion trap......
A new triterpenoid saponin.3 β-O-{ β-D-glucopyranosyl-(1—4)-[ β-D-glucopyranosyl-[1-2)]- α-L-arabinopyranosyl}-16α......
A new benzophenone glycoside,2,6-dihydroxy-4-O-β-D-glucopyranosylbenzophenone(1),was isolated from the leaves of guajav......
Two new steroidal glycosides named cyanoauriculoside A(1) and B(2),have been isolated from the roots of Cynanchumauricul......
In this paper, the synthesis of new mesomorphic benzothiazolyl derivatives, 6-ethoxy-2-[4-(4-alkyloxybenzoyloxy)benzylid......
A facile catalysis-free method was utilized to synthesize functional neodymium hexaboride (NdB6 ) nanowires of single cr......
Effects of oxygen defects on structure and properties of Sm_(0.5)Sr_(0.5)CoO_(3-δ) annealed in diffe
Samples of Sm0.5Sr0.5CoO3–δwere annealed in different atmospheres(Ar,N2,and O2)and temperatures(400 1200 oC),and chang......
How Effective Is the Single-point Energy Calculation in Investigating the Reaction Mechanisms?New De
The decarboxylation of pyrrole-2-carboxylic acid in acid solutions was elucidated by full optimization with the CPCM sol......
Due to their excellent work on UV Raman spectroscopic studies on catalytic materials,a team of scientists led by CAS Mem......
Synthesis and optoelectronic properties of a novel molecular semiconductor of dithieno[5,6-b:11,12-b
A facile procedure for the synthesis of dithieno[5,6-b:11,12-b0]coronene-2,3,8,9-tetracarboxylic tetra(2-ethylhexyl)este......
Three new biphenyls, 4,7,8-trimethoxy-2,3-methylenedioxydibenzofuran(1), 7-hydroxy-4,8-dimethoxy-2,3-methylenedioxydiben......
Two novel 27-norergostanol steroids,panthogenins A(1) and B(2),possessing unusual rings E and F featuring a ketal moiety......
Two new ent-kaurane diterpenoids, ent-7a,14b-dihydroxykaur-16-en-15-one-20-oic acid(1) and 1,7a,12b,14b-tetrahydroxy-1,1......
Sinomenine is a clinically available drug for the treatment of rheumatoid arthritis(RA).In a continuous research aiming ......
A novel dimeric procyanidin glucoside,catechin 3-O-acetate-(4 α→8)-catechin 3-O-acetate-3’-O- β-D-glucopyranoside(1)......
Two new phenylethanoid glycosides,himalosides A(1) and B(2),were isolated from the whole plant of Boschniakia himalaica,......
Metal-free carbon electrocatalyts for the oxygen reduction reaction (ORR) are attractive for their high activity and eco......
AIM: To study the chemical constituents of the solid culture of the endophyte Phomopsis sp. IFB-E060 in Vatica mangachap......
Two new naphthalene derivatives named eucleanal A and B(1 and 2) were isolated from Euclea divinorum.The structures of t......
Two new marasmone derivatives,1α,2β-dihydroxymarasmone(1) and 2β,3α-dihydroxymarasmone(2),and one new norsesquiterpe......
New steroidal sapogenins from the acid hydrolysis product of the whole glycoside mixture of Welsh on
Two new steroidal sapogenins(1,2) along with five known steroidal sapogenins were isolated from the acid hydrolysis prod......
One new isobenzofuranone derivative,1,4-dimethoxy-3-(3R*-hydroxy-3R*-methyl-1-tetralone)-1(3H)-isobenzofuran(1),was isol......
Two novel steroidal saponins(timosaponin BⅢ-a,timosaponin BⅢ-b) together with a known steroidal saponin(timosaponin B......
A novel dimeric diarylheptanoid,named alpinin A(1),along with two known compounds,1,7-diphenyl-5-ol-3-heptanone and 7- (......
The present study was designed to isolate and purify chemical constituents from solid culture of endophyte Aspergillus t......
Two new triterpenoids,named as 2 α,3 β,23-trihydroxylurs-12,20(30)-dien-28-oic acid β-D-glucopyranoside(1),and 2 α,3......
Objective To search for the microorganisms which have the high selectivity of hydrolyzing glycyrrhizic acid(GL) into 18......
Over the past years,it has been found that the epigenetic silence of tumor suppressor genes induced by overexpression of......
Characterization of impurities in the bulk drug lisinopril by liquid chromatography/ion trap spectro
Two trace impurities in the bulk drug lisinopril were detected by means of high-performance liquid chromatography couple......
We should like to communicate,as a result of our combined efforts for the past five years,this preliminary report on the......
Study on products and reaction paths for synthesis of 3,4-dihydro-2H-3-phenyl-1,3-benzoxazine from p
To study the synthesis of 3,4-dihydro-2H-3-phenyl-1,3-benzoxazine(benzoxazine),the reaction paths of phenol,aniline and ......
The present study was designed to investigate the non-alkaloid compounds from the leaves and stems of Vinca major cultiv......
Two new rearranged diterpenoids, tomocinol C(1) and spirocaesalmin C(2) were isolated from the seeds of Caesalpinia sapp......
Inhibition of Cytochrome P450 by Nomilin and Obacunone and Potential Mechanism in Human Liver Micros
Objective Nomilin and obacunone are two important limonoids that are well known for their anticancer effect. Previous st......
Metabolomics coupled with similarity analysis advances the elucidation of the cold/hot properties of
It recently becomes an important and urgent mission for modern scientific research to identify and explain the theory of......
Identification of antioxidant activity of two new aromatic ring butyrolactone derivatives from Dicta
The present study carried out a phytochemical investigation on the root barks of Dictamnus dasycarpus Turcz, leading to ......
Four new glycosides including a eudesmane-type sesquiterpenoid(1), a guaiane-type sesquiterpenoid(2), and two C_(14)-pol......
Four prenylated flavonoids compounds 1-4,named sinopodophyllines A-D,and a flavonoid glycoside(compound 13),sinopodophyl......
Development and validation of a HPLC-UV-ESI-MS method for the simultaneous quantitation of ten bioac
AIM: To develop a high performance liquid chromatography(HPLC) coupled with electrospray ionization mass spectrometry(ES......
The crowding agent induced phase transition of amphiphilic block copolymers in solution was explicitly considered. The i......
A new polyketide synthase nonribosomal peptide synthetase hybrid metabolite from plant endophytic fu
A new polyketide synthase–nonribosomal peptide synthetase(PKS–NRPS) hybrid metabolite, named pericoannosin B(1), was i......
