Abstract:
:Novel betulin derivatives were prepared and tested for their antitumor activity. Starting from 3-O-acetyl- or 3-O-methyl-betulinic aldehyde, the synthesis of C-28 ethynyl derivatives was performed; their subsequent transformation with several 1,3-dipolarophiles afforded pyrazoles and 1,2,3-triazoles. Their screening for antitumor activity was performed in a panel of 15 human cancer cell lines by a colorimetric SRB-assay. Thereby, several compounds revealed a higher cytotoxicity than betulinic acid. In addition, the encapsulation of the lead structure 7 into liposomes was investigated. The results from a dye exclusion test and from DNA laddering experiments provided evidence for an apoptotic cell death.
journal_name
Arch Pharm (Weinheim)journal_title
Archiv der Pharmazieauthors
Csuk R,Barthel A,Sczepek R,Siewert B,Schwarz Sdoi
10.1002/ardp.201000232subject
Has Abstractpub_date
2011-01-01 00:00:00pages
37-49issue
1eissn
0365-6233issn
1521-4184journal_volume
344pub_type
杂志文章abstract::Fourteen new 1-[(N, N-disubstituted thiocarbamoylthio)acetyl]-3-(2-thienyl)-5-aryl-2-pyrazoline derivatives (7a-n) were synthesised by reacting 1-(chloroacetyl)-3-(2-thienyl)-5-aryl-2-pyrazolines (5a-g) and appropriate sodium salts of N, N-disubstituted dithiocarbamoic acids (6a, b). The structures of the synthesised ...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200400935
更新日期:2005-03-01 00:00:00
abstract::Synthesis of a new series of 3,4-diarylpyrazole-1-carboxamide derivatives is described. Their antiproliferative activity against A375P human melanoma cell line was tested and the effect of substituents on the diarylpyrazole scaffold was investigated. The biological results indicated that five synthesized compounds (Ig...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201000375
更新日期:2011-11-01 00:00:00
abstract::This paper describes the use of the multivariate image analysis-quantitative structure-activity relationship (MIA-QSAR) methodology, which is a method capable of relating chemical structures with their biological activities. This in silico method has been shown to be extremely reliable and provides excellent results, ...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201200079
更新日期:2012-09-01 00:00:00
abstract::Several 2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1H-benzimidazole-5-carboxamidine analogues were synthesized for their antibacterial and antifungal activities against S. aureus, Methicillin-resistant S. aureus (MRSA), C. albicans, and C. krusei. MIC values of the targeted compounds 43-58 are comparabl...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200500168
更新日期:2006-02-01 00:00:00
abstract::The synthesis and antitumor activity screening of novel isatin based conjugates with thiazolidine and pyrazoline moieties were performed. Reaction of 3,5-diaryl-4,5-dihydropyrazoles with chloroacetyl chloride yielded starting 2-chloro-1-(3,5-diaryl-4,5-dihydropyrazol-1-yl)-ethanones which were utilized in alkylation o...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201100055
更新日期:2011-08-01 00:00:00
abstract::Design, synthesis, and cytotoxic activity of amidine derivatives of melphalan are described and structure-activity relationships are discussed. Evaluation of the cytotoxicity of these compounds employing a MTT assay and inhibition of [(3)H]thymidine incorporation into DNA in both MDA-MB-231 and MCF-7 human breast canc...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200700001
更新日期:2007-05-01 00:00:00
abstract::The histone deacetylase (HDAC) enzyme plays an important role in gene transcription. Inhibitors of histone deacetylases induce cell differentiation and suppress cell proliferation in tumor cells. Hydroxamates with rigid linker have displayed better inhibition profiles than those with linear and flexible aliphatic link...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200900117
更新日期:2010-03-01 00:00:00
abstract::A new series of 16 6-chloro-1,1-dioxo-7-{4-[(4-R(1)-phenyl)imino]-4H-3,1-benzoxazin-2-yl}-3-(substituted amino)-1,4,2-benzodithiazines 7-22 was prepared in order to evaluate the cytotoxic activity against six human cancer cell lines. The structures of the new compounds were confirmed by IR, (1)H-, and (13)C-NMR, eleme...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201000183
更新日期:2011-07-01 00:00:00
abstract::Gypsogenin (1) was obtained by acidic hydrolysis from its saponin. While the parent compound 1 acted as a selective inhibitor for butyrylcholinesterase (from equus) possessing a moderate mixed-type inhibition of the enzyme, Ki values as low as 2.67 ± 0.59 μM were determined for (3β,4α) 3-O-acetyl-olean-12-ene-23,28-di...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201400103
更新日期:2014-10-01 00:00:00
abstract::A series of 4β-[(4-substituted)-1,2,3-triazol-1-yl]podophyllotoxin congeners were synthesized by employing click chemistry and further evaluated for their antitumor activity by MTT assay. Among them, six congeners (10, 11, 12, 13, 22, and 24) exhibited approximately 100-fold more potent inhibitory activity against fou...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201100438
更新日期:2012-12-01 00:00:00
abstract::An overview of the rhodopsin crystal structure provides a structural basis for understanding the structures and functions of other G-protein coupled receptors (GPCRs). All of the structural details observed to date for rhodopsin will not necessarily carry over to other GPCRs, but major features such as the arrangement...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章,评审
doi:10.1002/ardp.200400995
更新日期:2005-06-01 00:00:00
abstract::The 2-(2-Bromophenyl)-acetaldehyde acetals 8 are treated with n-BuLi and the aldehydes 7 and 11 to form the hydroxyacetales 9 and 12, respectively. 9 is cyclized under acidic conditions to the epoxybenzoxocine 2; analogously 12 yields the epoxydibenzoxocine 14. ...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.19903231111
更新日期:1990-11-01 00:00:00
abstract::A series of oximes deriving from 5-arylidene-pyrrolidine-2,3,4-triones and pyridine-2,3,4-triones has been prepared. The presence of the tautomeric nitrosoenol was proven in solutions of alpha-ketooxime 7a. The binding affinity of the new oximes toward the N-methyl-D-aspartate (glycine site) receptor has been measured...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/(sici)1521-4184(19999)332:9<309::aid-ardp3
更新日期:1999-09-01 00:00:00
abstract::In this study, the synthesis of a new series of 3,6-disubstituted-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine 1a-4c compounds derived from 4-amino-3-substituted-1,2,4-triazole-5-thiones 1-4 is described. All of the synthesized compounds were screened for their possible analgesic / anti-inflammatory, antioxidant activit...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200800188
更新日期:2009-05-01 00:00:00
abstract::Cathepsin B and plasmin are intra- or extracellular proteases that are overexpressed by several solid tumors. In order to exploit both proteases as molecular targets for tumor-specific cleavage of prodrugs, an albumin-binding formulation of methotrexate was developed that incorporated the peptide sequence D-Ala-Phe-Ly...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200700025
更新日期:2007-08-01 00:00:00
abstract::A series of bis(benzo[g]indoles) bridged by CX-(CH2)nN(Me)(CH2)n-CX (X = O, S, H2; n = 2,3) was synthesized as bifunctional antitumor agents and evaluated for cytotoxic activity against diverse human cancer cell lines by the National Cancer Institute. The parent compounds 2a,b exhibited a good level of activity and de...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/1521-4184(200112)334:11<337::aid-ardp337>3
更新日期:2001-11-01 00:00:00
abstract::The complex of lanthanum (III) was synthesized reacting the respective inorganic salt with 5-aminoorotic acid in amounts equal to the metal:ligand molar ratio of 1:3. The complex was prepared by adding an aqueous solution of lanthanum (III) nitrate to an aqueous solution of the ligand, subsequently raising the pH of t...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200600077
更新日期:2006-11-01 00:00:00
abstract::A series of new Mannich bases of N-[(4-arylpiperazin-1-yl)-methyl]-3-(chlorophenyl)-pyrrolidine-2,5-diones 10-23 have been synthesized and evaluated for their anticonvulsant activity in maximum electroshock (MES) and subcutaneous pentylenetetrazole (scPTZ) seizure threshold tests. Their neurotoxicity was determined us...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200900250
更新日期:2010-06-01 00:00:00
abstract::The synthesis and biological evaluation of ethyl 8-oxo-5,6,7,8-tetrahydro-thiazolo[3,2-a][1,3]diazepin-3-carboxylate (HIE-124, 4), as a member of a new generation of ultra-short acting hypnotics is described. HIE-124 4 exhibited potent in-vivo activity with a very rapid onset of action and a shorter duration of action...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200700132
更新日期:2008-02-01 00:00:00
abstract::Some new N-[6-indazolyl]arylsulfonamides and N-[alkoxy-6-indazolyl]arylsulfonamides were prepared by the reduction of 2-alkyl-6-nitroindazoles with SnCl2 in different alcohols, followed by coupling the corresponding amine with arylsulfonyl chlorides in pyridine. The newly synthesized compounds were evaluated for their...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201300390
更新日期:2014-06-01 00:00:00
abstract::Enantiomerically pure 1, 2-diamino-1-(4-fluorophenyl)propanes were synthesized by stereospecific and stereoselective procedures by use of the (1R, 2S)- and (1S, 2R)-2-amino-1-(4-fluorophenyl)propanols (12a) as intermediates. The enantiomeric purity was determined by (1)H NMR spectroscopy after conversion of the propan...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/1521-4184(200205)335:5<229::AID-ARDP229>3.
更新日期:2002-05-01 00:00:00
abstract::A range of 11 derivatives of flavone-8-acetic acid (FAA) in which the structure has been substantially altered in different ways have been prepared and their anti-tumour activity evaluated in vitro against a panel of human and murine tumour cell lines and in vivo against MAC 15A. The generally poor activity observed s...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/1521-4184(20006)333:6<181::aid-ardp181>3.0
更新日期:2000-06-01 00:00:00
abstract::Polyketide-derived macrolactones like zearalenone (1), zearalane (2) or curvularin (3) display a wide range of interesting pharmacological activities. Here, we present a short and efficient approach towards this class of natural products by a combination of the Sonogashira and Mitsunobu reactions. The resulting lacton...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200500132
更新日期:2005-12-01 00:00:00
abstract::In an attempt to find a new class of antibacterial agents, we have synthesized thirty new coumarin (2H-benzopyran-2-one) analogues. These derivatives include substituted azetidin-2-ones (beta-lactam) 3a-f, pyrrolidin-2-ones 4a-f, 2H-1,3,4-oxadiazoles 5a-f, and thiazolidin-4-ones 6a-f attached to 4-phenyl-2H-benzopyran...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200700266
更新日期:2008-11-01 00:00:00
abstract::A number of C-3 spirocyclic 2-benzazepine analogs of α-phenyl-N-tert-butyl nitrone (PBN) were synthesized and tested for their activity in protecting rat brain mitochondria and dopaminergic (DA) neurons against 6-hydroxydopamine (6-OHDA), a toxin inducing destruction of the DA nigro-striatal pathway in rodent models o...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.201200007
更新日期:2012-08-01 00:00:00
abstract::We report in this work the synthesis, cytotoxicity, and antimicrobial activity of ([1,2,4]triazolo[1,5-c]quinazolin-2-ylthio)carboxylic acid amides 4-7 in connection with our previous research in the preparation of triazoloquinazoline derivatives. Due to simplicity, general availability of starting materials, and high...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.200900077
更新日期:2009-11-01 00:00:00
abstract::The 5-desoxy analogue of BW245C, imidazolidin-2-one 3, has been synthesized by reduction of the N-benzyl hydantoin derivative 6. Compound 3 was found to be approximately equipotent with BW245C as an inhibitor of platelet aggregation and this result indicates that the 5-keto group of BW245C is not essential for platele...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.2503240802
更新日期:1991-08-01 00:00:00
abstract::Curcumin, a phenolic compound extracted from Curcuma longa, is commonly used in Asia as a spice and pigment and has several biological functions, particularly antioxidant properties. It has been reported that curcumin exhibits bifunctional antioxidant properties related to its capability to react directly with reactiv...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章,评审
doi:10.1002/ardp.201400266
更新日期:2014-12-01 00:00:00
abstract::A short series of arylhydrazones of 4-[(2-methylimidazo[1,2-a]pyridine-3-yl)azo]benzoic acid hydrazide was synthesized and tested for antimicrobial activity. All of the compounds show antimicrobial activity against Escherichia coli. A few members were also active against Klebsiella pneumoniae, Staphylococcus aureus an...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/ardp.19903230304
更新日期:1990-03-01 00:00:00
abstract::A series of novel N-(4,5-dihydroimidazol-2-yl)-1,3-dihydrobenzimidazole derivatives 2a-d, 3a-d and 4a-p were prepared and their structure was determined by IR and NMR spectroscopic data as well as X-ray analysis of carbonitrile 2a. The compounds were studied as potential inhibitors of the human blood platelet aggregat...
journal_title:Archiv der Pharmazie
pub_type: 杂志文章
doi:10.1002/(sici)1521-4184(199807)331:7/8<241::aid-ar
更新日期:1998-07-01 00:00:00