账务
高级检索

keyword

NMR(remove)

keyword

FT-IR(remove)

二次搜索

GO
首页 > 报刊文摘
搜索 获得约275条结果,(用时0.0620秒)
排序:相关度 | 标题

Synthesis and conformational analysis of AzAsx-containing oligopeptides

SummaryFor the sake of improving synthetic methods and evaluating the conformational perturbation induced by the substitution of AzAsx for the Asx residue in the cognate dipeptide R-CO-Asx-Pro-NHR, we prepared the AzAsx-dipeptide sequence by making use of the crystalline triphosgene.

出版机构:Kluwer Academic Publishers

刊物名称:Letters in Peptide Science

出版时间:1995

ISSN:0929-5666

数据源:报刊文摘

Design, Synthesis and Anti Colon Cancer Activity Evaluation of Phosphorylated Derivatives of Lamivudine (3TC)

Their structures were characterized by IR, 1H, 13C, 31P NMR and mass spectral analyses. All the compounds were evaluated for their anti colon cancer activity against COLO-205 cell lines in vitro studies. Among them 5a and 5b emerged as lead compounds with 0.003 ?M and 0.0001 ?M values.

出版机构:Bentham Science Publishers

刊物名称:Letters in Drug Design & Discovery

出版时间:2011

ISSN:1570-1808

数据源:报刊文摘

Metal Coordinated Urea Based Fluorescent Receptors for Anion Recognition

Two bis urea based acyclic receptors (1 and 2) containing two pyridyl moieties with different spacers are synthesized. These receptors are further transformed to metallo-macrocyclic receptors (3 and 4) by coordinating with metal center through pyridine ring 'N'.

出版机构:Bentham Science Publishers

刊物名称:Mini-Reviews in Organic Chemistry

出版时间:2011

ISSN:1570-193X

数据源:报刊文摘

Hyperbranched polyester based on the core + AB2 approach: Synthesis and structural investigation

In this study, structural buildup studies during the synthesis of fifth-generation hyperbranched polyesters (HBPs) from 2-bis(hydroxymethyl) propionic acid (AB2) and glycerol (core) by a one-pot process were undertaken.

出版机构:Wiley Subscription Services, Inc., A Wiley Company

刊物名称:Journal of Applied Polymer Science

出版时间:2010

ISSN:0021-8995

数据源:报刊文摘

Molecular structure, vibrational spectra and DFT molecular orbital calculations (TD-DFT and NMR) of the antiproliferative drug Methotrexate

The FT-IR and FT-Raman spectral studies of the Methotrexate (MTX) were carried out. The equilibrium geometry, various bonding features and harmonic vibrational frequencies of MTX have been investigated with the help of B3LYP density functional theory (DFT) using 6-31G(d) as basis set.

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2010

ISSN:1386-1425

数据源:报刊文摘

Experimental and theoretical investigation of the molecular and electronic structure of anticancer drug camptothecin

The Fourier Transform Infrared spectrum of (S)-4 ethyl-4-hydroxy-1H-pyrano [3?,4?:6,7]-indolizino-[1,2-b-quinoline-3,14-(4H,12H)-dione] [camptothecin] was recorded in the region 4000?400cm?1. The Fourier Transform Raman spectrum of camptothecin (CPT) was also recorded in the region 3500?50cm?1.

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2011

ISSN:1386-1425

数据源:报刊文摘

Synthesis, structure investigation, spectral characteristics and biological activities of some novel azodyes

Four novel azo compounds were synthesized; o-phenylazo- (C14H13N3O2) (I), p-bromo-o-phenylazo- (C14H13BrN3O2) (II), p-methoxy-o-phenaylazo- (C15H16N3O3) (III) and p-nitro-o-phenylazo-p-acetamidophenol (C14H13N4O4) (IV). These compounds were carefully investigated using elemental analyses, UV?

出版机构:Elsevier Science

刊物名称:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

出版时间:2011

ISSN:1386-1425

数据源:报刊文摘

Synthesis, spectroscopic and mesomorphic studies on heterocyclic liquid crystals with 1,3-oxazepine-4,7-dione, 1,3-oxazepane-4,7-dione and 1,3-oxazepine-1,5-dione cores

All structures were elucidated by physical measurements and the bonding characteristics of the resulting compounds were substantiated by FT-IR spectroscopy. Their molecular structures are supported by the 1H and 13C NMR spectra along with two-dimensional COSY, NOESY, HMQC and HMBC.

出版机构:Elsevier Science

刊物名称:Journal of Molecular Structure

出版时间:2010

ISSN:0022-2860

数据源:报刊文摘

The relationship between dose-dependent antitussive and bronchodilatory effects of Opilia celtidifolia polysaccharide and nitric oxide in guinea pigs

ude polysaccharide composed of uronic acids (32%), arabinose (26%), glucose (15%), galactose (11%), rhamnose (7%), mannose (5%), xylose (4%) and small amount of fucose residues has been isolated from the leaves of Opilia celtidifolia by boiled water extraction.

出版机构:Elsevier Science

刊物名称:International Journal of Biological Macromolecules

出版时间:2010

ISSN:0141-8130

数据源:报刊文摘

Application of 14N NQR to the study of piroxicam polymorphism

A study was conducted to test the capability of the 14N nuclear quadrupole resonance (NQR) method to discriminate qualitatively and quantitatively among different forms of piroxicam.

出版机构:Wiley Subscription Services, Inc., A Wiley Company

刊物名称:Journal of Pharmaceutical Sciences

出版时间:2010

ISSN:0022-3549

数据源:报刊文摘