Next Issue
Previous Issue

E-Mail Alert

Add your e-mail address to receive forthcoming issues of this journal:

Journal Browser

Journal Browser

Table of Contents

Molecules, Volume 11, Issue 5 (May 2006), Pages 309-382

  • Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.
  • You may sign up for e-mail alerts to receive table of contents of newly released issues.
  • PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Readerexternal link to open them.
View options order results:
result details:
Displaying articles 1-10
Export citation of selected articles as:

Research

Jump to: Other

Open AccessArticle Solvent Effects in Electrocoagulation of Selected Plant Pigments and Tannin
Molecules 2006, 11(5), 309-317; doi:10.3390/11050309
Received: 9 April 2006 / Revised: 27 April 2006 / Accepted: 27 April 2006 / Published: 29 April 2006
Cited by 3 | PDF Full-text (142 KB) | HTML Full-text | XML Full-text
Abstract
Electrocoagulation of a plant extract and certain substances representative of selected classes of plant pigments, viz. chlorophyll, a carotenoid, a phenolic substance and a tannin, was performed in ethanol containing varying amounts of water (15-75%). The results showed that the extent and [...] Read more.
Electrocoagulation of a plant extract and certain substances representative of selected classes of plant pigments, viz. chlorophyll, a carotenoid, a phenolic substance and a tannin, was performed in ethanol containing varying amounts of water (15-75%). The results showed that the extent and efficiency of coagulation of these substances tends to vary in a manner directly related to the water content of the solvent, although the tannin and the phenolic substance were less sensitive to the solvent composition and are equally well coagulated in all solvent systems studied. The findings can be applied to the removal of these substances from aqueous alcoholic plant extracts using the electrocoagulation technique. Full article
Open AccessArticle A Handy and Solventless Direct Route to Primary 3-[3-Aryl)-1,2,4-oxadiazol-5-yl]propionamides Using Microwave Irradiation
Molecules 2006, 11(5), 318-324; doi:10.3390/11050318
Received: 15 December 2005 / Revised: 24 March 2006 / Accepted: 5 May 2006 / Published: 9 May 2006
Cited by 19 | PDF Full-text (48 KB) | HTML Full-text | XML Full-text
Abstract A one-step, simple and straightforward synthesis of the title amides from the corresponding carboxylic acids, urea and imidazole under microwave irradiation is described. Full article
Open AccessArticle Synthesis and Antitumor Evaluation of Novel Derivatives of 6-Amino-2-phenylbenzothiazoles
Molecules 2006, 11(5), 325-333; doi:10.3390/11050325
Received: 4 April 2006 / Revised: 20 April 2006 / Accepted: 24 April 2006 / Published: 9 May 2006
Cited by 27 | PDF Full-text (67 KB) | HTML Full-text | XML Full-text
Abstract
Novel derivatives of 6-amino-2-phenylbenzothiazole bearing differentsubstituents (amino, dimethylamino or fluoro) on the phenyl ring were prepared as thecorresponding hydrochloride salts. 6-Nitro-2-(substituted-phenyl)benzothiazoles (1-6) weresynthesized by condensation reactions of substituted benzaldehydes with 2-amino-5-nitrothiophenol. Nitro derivatives were reduced to the amino derivatives with SnCl2 [...] Read more.
Novel derivatives of 6-amino-2-phenylbenzothiazole bearing differentsubstituents (amino, dimethylamino or fluoro) on the phenyl ring were prepared as thecorresponding hydrochloride salts. 6-Nitro-2-(substituted-phenyl)benzothiazoles (1-6) weresynthesized by condensation reactions of substituted benzaldehydes with 2-amino-5-nitrothiophenol. Nitro derivatives were reduced to the amino derivatives with SnCl2/HCl.Water soluble hydrochloride salts of 6-amino-2-(substituted-phenyl)benzothiazole (13-19)were prepared using concentrated or gaseous HCl. Compounds 13-19 were found to exertcytostatic activities against malignant human cell lines: cervical (HeLa), breast (MCF-7),colon (CaCo-2), laryngeal carcinoma (Hep-2), and normal human fibroblast cell lines (WI-38). Full article
Open AccessArticle An Improved NMR Study of Liposomes Using 1-Palmitoyl-2-oleoyl-sn-glycero-3-phospatidylcholine as Model
Molecules 2006, 11(5), 334-344; doi:10.3390/11050334
Received: 15 April 2006 / Accepted: 9 May 2006 / Published: 10 May 2006
Cited by 12 | PDF Full-text (129 KB) | HTML Full-text | XML Full-text
Abstract
In this paper we report a comparative characterization of Small UnilamellarVesicles (SUVs), Large Unilamellar Vesicles (LUVs) and Multilamellar Vesicles (MLVs)prepared from 1-palmitoyl-2-oleoyl-sn-glycero-3-phospatidylcholine (POPC), carried outusing two NMR techniques, namely High Resolution NMR in solution and HighResolution–Magic Angle Spinning (HR-MAS). The size and [...] Read more.
In this paper we report a comparative characterization of Small UnilamellarVesicles (SUVs), Large Unilamellar Vesicles (LUVs) and Multilamellar Vesicles (MLVs)prepared from 1-palmitoyl-2-oleoyl-sn-glycero-3-phospatidylcholine (POPC), carried outusing two NMR techniques, namely High Resolution NMR in solution and HighResolution–Magic Angle Spinning (HR-MAS). The size and size distributions of thesevesicles were investigated using the dynamic light scattering technique. An improvedassignment of the 1H-NMR spectrum of MLVs is also reported. Full article
Open AccessArticle Experimental and Theoretical Study of Lanthanide Complexes Based on Linear and Macrocyclic Polyaminopolycarboxylic Acids Containing Pyrazolylethyl Arms
Molecules 2006, 11(5), 345-356; doi:10.3390/11050345
Received: 20 December 2005 / Revised: 5 May 2006 / Accepted: 5 May 2006 / Published: 17 May 2006
Cited by 7 | PDF Full-text (101 KB) | HTML Full-text | XML Full-text
Abstract
We report the synthesis of two novel Gd(III)-complexes derived from linear and macrocyclic polyaminopolycarboxylic acids 1 and 2, which contain a 3,5- dimethylpyrazolyl-ethyl arm, and a study of their relaxivity properties. The relationships between the experimental and theoretical results have provided interesting [...] Read more.
We report the synthesis of two novel Gd(III)-complexes derived from linear and macrocyclic polyaminopolycarboxylic acids 1 and 2, which contain a 3,5- dimethylpyrazolyl-ethyl arm, and a study of their relaxivity properties. The relationships between the experimental and theoretical results have provided interesting information about the kinetic and thermodynamic stability of these complexes. Full article
Open AccessArticle Synthesis of Novel Sterically Demanding Carbo- and Heterocyclic β-Ketoesters
Molecules 2006, 11(5), 357-364; doi:10.3390/11050357
Received: 16 December 2005 / Revised: 10 February 2006 / Accepted: 12 February 2006 / Published: 10 May 2006
PDF Full-text (75 KB) | HTML Full-text | XML Full-text
Abstract
We present an easy method for the synthesis of β-ketoesters starting from variouscarbocyclic and heterocyclic carboxylic acids and esters. The β-ketoester side-chain wasintroduced by a sequence involving α-deprotonation and quenching with CO2, conversion tothe corresponding acid chloride and subsequent chain [...] Read more.
We present an easy method for the synthesis of β-ketoesters starting from variouscarbocyclic and heterocyclic carboxylic acids and esters. The β-ketoester side-chain wasintroduced by a sequence involving α-deprotonation and quenching with CO2, conversion tothe corresponding acid chloride and subsequent chain elongation using deprotonated ethylacetate. Full article
Open AccessCommunication Selective Enzymatic Reduction of Aldehydes
Molecules 2006, 11(5), 365-369; doi:10.3390/11050365
Received: 22 February 2006 / Accepted: 7 March 2006 / Published: 12 May 2006
Cited by 7 | PDF Full-text (37 KB) | HTML Full-text | XML Full-text
Abstract
Highly selective enzymatic reductions of aldehydes to the corresponding alcohols was performed using an E. coli JM109 whole cell biocatalyst. A selective enzymatic method for the reduction of aldehydes could provide an eco-compatible alternative to chemical methods. The simplicity, fairly wide scope [...] Read more.
Highly selective enzymatic reductions of aldehydes to the corresponding alcohols was performed using an E. coli JM109 whole cell biocatalyst. A selective enzymatic method for the reduction of aldehydes could provide an eco-compatible alternative to chemical methods. The simplicity, fairly wide scope and the very high observed chemoselectivity of this approach are its most unique features. Full article
Open AccessCommunication First Synthesis of 3-Acetyl-2-aminothiophenes Using the Gewald Reaction
Molecules 2006, 11(5), 371-376; doi:10.3390/11050371
Received: 5 May 2006 / Revised: 15 May 2006 / Accepted: 16 May 2006 / Published: 16 May 2006
Cited by 20 | PDF Full-text (58 KB) | HTML Full-text | XML Full-text
Abstract
Novel 3-acetyl-2-aminothiophenes were prepared from cyanoacetone and1,4-dithianyl-2,5-diols using a modified Gewald reaction. The syntheses of thecorresponding acetamides, as well as that of 3-acetyl-2-amino-5-nitrothiophene – aninteresting building-block for thiophene azo dyes – are reported. Detailed spectroscopicinvestigations (1H-NMR, 13C-NMR, MS, IR) [...] Read more.
Novel 3-acetyl-2-aminothiophenes were prepared from cyanoacetone and1,4-dithianyl-2,5-diols using a modified Gewald reaction. The syntheses of thecorresponding acetamides, as well as that of 3-acetyl-2-amino-5-nitrothiophene – aninteresting building-block for thiophene azo dyes – are reported. Detailed spectroscopicinvestigations (1H-NMR, 13C-NMR, MS, IR) of the obtained compounds are presented. Full article
Open AccessArticle Synthesis of New 4(3H)-Quinazolinone Derivatives Using 5(4H)-Oxazolones
Molecules 2006, 11(5), 377-382; doi:10.3390/11050377
Received: 10 October 2005 / Accepted: 15 May 2006 / Published: 27 May 2006
Cited by 6 | PDF Full-text (46 KB) | HTML Full-text | XML Full-text
Abstract New derivatives of 5(4H)-quinazolinone containing 2-imidazolin-5-one rings have been prepared from 5(4H)-oxazolone derivatives. Full article

Other

Jump to: Research

Open AccessCorrection Molecules 2002, 7, 885-895
Molecules 2006, 11(5), 370; doi:10.3390/11050370
Received: 10 May 2006 / Published: 12 May 2006
PDF Full-text (12 KB) | HTML Full-text | XML Full-text

Journal Contact

MDPI AG
Molecules Editorial Office
St. Alban-Anlage 66, 4052 Basel, Switzerland
molecules@mdpi.com
Tel. +41 61 683 77 34
Fax: +41 61 302 89 18
Editorial Board
Contact Details Submit to Molecules
Back to Top