共查询到20条相似文献,搜索用时 62 毫秒
1.
Fei X Zheng QH Liu X Wang JQ Sun HB Mock BH Stone KL Miller KD Sledge GW Hutchins GD 《Bioorganic & medicinal chemistry letters》2003,13(13):2217-2222
Novel matrix metalloproteinase (MMP) inhibitor radiotracers, (S)-3-methyl-2-(2',3',4'-methoxybiphenyl-4-sulfonylamino)-butyric acid [(11)C]methyl ester (1a-c), (S)-3-methyl-2-(2',3',4'-fluorobiphenyl-4-sulfonylamino)-butyric acid [(11)C]methyl ester (1d-f), and (S)-3-methyl-2-(4'-nitrobiphenyl-4-sulfonylamino)-butyric acid [(11)C]methyl ester (1g), a series of substituted biphenylsulfonamide derivatives, have been synthesized for evaluation as new potential positron emission tomography (PET) cancer imaging agents. 相似文献
2.
El-Kattan Y Lin TH Wu M Kumar VS Kotian PL Ghosh A Cheng X Bantia S Babu YS Chand P 《Nucleosides, nucleotides & nucleic acids》2005,24(10-12):1597-1611
A number of N6-substituted 9-[3-(phosphonomethoxy)propyl]adenine derivatives having hydroxymethyl at C-1' position were prepared from the appropriate 6-chloroadenine derivative. The syntheses of the corresponding prodrugs of these compounds are also reported. These compounds showed poor activity against HCV in replicon assay. 相似文献
3.
Synthesis of chalcone derivatives on steroidal framework and their anticancer activities 总被引:2,自引:0,他引:2
Saxena HO Faridi U Kumar JK Luqman S Darokar MP Shanker K Chanotiya CS Gupta MM Negi AS 《Steroids》2007,72(13):892-900
Chalcone derivatives on estradiol framework have been synthesized. Some of the derivatives showed potent anticancer activity against some human cancer cell lines. Compounds 9 and 19 showed potent activity against MCF-7, a hormone dependent breast cancer cell line. Chalcone 7 was further modified to the corresponding indanone derivative (19) using the Nazarov reaction, which showed better activity than the parent compound against the MCF-7 breast cancer cell line. Active anticancer derivatives were also evaluated for osmotic hemolysis using the erythrocyte as a model system. It was observed that chalcone derivatives showing cytotoxicity against cancer cell lines did not affect the fragility of erythrocytes and hence may be considered as non-toxic to normal cells. 相似文献
4.
I N Torgun S V Sydorenko I E Zykova S M Iudin L I Kriukova I I Krylov L N Kriukov S L Kuznotsov E A Vorontsov S P Rezvan S A Grudinina 《Antibiotiki i khimioterapii͡a》2001,46(10):6-10
Screening among 9-aminoacridine, 10,11-dihydro-5H-dibenz[b, f]azepine and polyfluoro 5,6-dihydro-1,3,5-oxadiazine derivatives allowed to isolate compounds with potential antibacterial activity. Schemes of the active compounds synthesis are given. The most important is the estimation of the oxydiazines activity against gram-positive microorganisms including methicillin-resistant staphylococci. Special attention is paid to the activity of iminodibenzyl derivatives against multiresistant gram-negative microorganisms. 相似文献
5.
D Subrahmanyam B Renuka G S Kumar V Vandana D S Deevi 《Bioorganic & medicinal chemistry letters》1999,9(15):2131-2134
Several 9-deoxo-9-substituted podophyllotoxin derivatives were synthesised starting from naturally occuring podophyllotoxin and their anti-cancer activity was evaluated against in vitro human cancer cell line assay. It was observed that these compounds do possess good anti-cancer activity particularly against ovarian, renal and lung cancer cell lines. 相似文献
6.
Bhupesh S. Samant Chikomborero Chakaingesu 《Bioorganic & medicinal chemistry letters》2013,23(5):1420-1423
A series of naphthoquinone derivatives has been synthesized and tested for its biological activity against human African trypanosomiasis. The use of reverse micellar medium not only enhanced the conversion rate, but also showed selectivity towards mono-coupled product in aryl chloride–aniline coupling reactions. Two derivatives of naphthoquinone (9b and 9c) exhibited potent activity against Trypanosoma brucei in vitro with low cytotoxicity. 相似文献
7.
Sashidhara KV Rosaiah JN Kumar M Gara RK Nayak LV Srivastava K Bid HK Konwar R 《Bioorganic & medicinal chemistry letters》2010,20(23):7127-7131
A small library of novel benzocoumarin derivatives based on naturally occurring neo-tanshinlactone scaffold was constructed and their antiproliferative activities against breast cancer cells MCF-7 and MDA-MB-231 were evaluated. A number of derivatives showed good anti-breast cancer activity, in some cases higher to that of the reference compound tamoxifen. In particular, benzocoumarins Bc-5, Bc-8 and Bc-9 strongly inhibited the proliferation of MCF-7 cancer cell line with the IC(50) values of 3.8, 7.9 and 6.5 μM, respectively. The compounds were capable of inducing nuclear fragmentation, cell cycle arrest and caspase dependent apoptosis in MCF-7 cell lines. In addition, these derivatives were devoid of cytotoxic effect against normal osteoblast cells. These synthetic benzocoumarins hold promises for developing safer alternative to the existing anti-breast cancer agents. 相似文献
8.
The synthesis of 9-substituted tetracycline derivatives has been accomplished by the reaction of C9 diazonium tetrafluoroborate tetracycline salts with organotin reagents under modified Stille coupling conditions. Several of these unreported derivatives show promising in vitro biological activity against tetracycline resistant and antibiotic resistant bacteria. 相似文献
9.
Several amines, amino acid derivatives and low molecular weight peptides containing an amide-bound oxal hydroxamic acid moiety have been synthesized and tested for their inhibitory effects towards native human gelatinase B (MMP-9) and the catalytic domains of the membrane type MT1-MMP (MMP-14) and of neutrophil collagenase (MMP-8). A number of these compounds exhibited considerable inhibitory activity against the tested metalloproteinases. 相似文献
10.
《Bioorganic & medicinal chemistry letters》2014,24(16):3850-3853
A series of novel 7-(N-substituted-methyl)-camptothecin derivatives was designed, synthesized, and evaluated for in vitro cytotoxicity against four human tumor cell lines, A-549, MDA-MB-231, KB, and KBvin. All of the derivatives showed promising in vitro cytotoxic activity against the tested tumor cell lines, with IC50 values ranging from 0.0023 to 1.11 μM, and were as or more potent than topotecan. Compounds 9d, 9e, and 9r exhibited the highest antiproliferative activity among all prepared derivatives. Furthermore, all of the compounds were more potent than paclitaxel against the multidrug-resistant (MDR) KBvin subline. With a concise efficient synthesis and potent cytotoxic profiles, especially significant activity towards KBvin, compounds 9d, 9e, and 9r merit further development as a new generation of camptothecin-derived anticancer clinical trial candidates. 相似文献
11.
Synthesis of tetrocarcin derivatives with specific inhibitory activity towards Bcl-2 functions 总被引:2,自引:0,他引:2
Kaneko M Nakashima T Uosaki Y Hara M Ikeda S Kanda Y 《Bioorganic & medicinal chemistry letters》2001,11(7):887-890
Tetrocarcin A was recently identified as an inhibitor of the anti-apoptotic function of Bcl-2. We synthesized novel tetrocarcin derivatives in order to increase their selective inhibitory activity against Bcl-2. It was found that 21-acetoxy-9-glycosyloxy derivatives had potent Bcl-2 inhibitory activity without significant antimicrobial activity. 相似文献
12.
S Sato Y Suga T Yoshimura R Nakagawa T Tsuji K Umemura T Andoh 《Bioorganic & medicinal chemistry letters》1999,9(18):2653-2656
A series of methoxycarbonyl group modified nidulalin A analogs were synthesized to improve stability against esterases. The amide derivatives showed cytotoxic activity along with inhibitory activity against DNA topoisomerase II. Among the analogs, amide 9a exhibited antitumor activity in Colon 26 murine tumor model. 相似文献
13.
Mustafa G Khan IU Ashraf M Afzal I Shahzad SA Shafiq M 《Bioorganic & medicinal chemistry》2012,20(8):2535-2539
The present study describes a convenient method for the synthesis of new lipoxygenase inhibitors, 4-(toluene-4-sulfonylamino)-benzoic acids from p-amino benzoic acid. Reaction of p-amino benzoic acid with p-toluenesulfonyl chloride provided thirteen N- and O-alkylation products 4a-4m in moderate to good yields. Lipoxygenase inhibition of newly formed sulfonamide derivatives was investigated and some of these compounds 4m, 4g, 4e, 4f and 4j showed good lipoxygenase inhibitory activities with IC(50) values ranged between 15.8 ± 0.57 and 91.7 ± 0.61 μmol whilst all other compounds exhibited mild anti-lipoxygenase activities with IC(50) values ranged between 139.2 ± 0.75 and 232.1 ± 0.78 μmol. N-alkylated products were more active against the enzyme than O-alkylated or both N- and O-alkylated ones. All synthesized sulfonamides were recrystallized in chloroform to give these title compounds which were characterized using FTIR, (1)H NMR, (13)C NMR, elemental analysis and single crystal X-ray diffraction techniques. 相似文献
14.
N Katagiri M Nomura H Sato C Tameda A Kurimoto S Arai A Toyota C Kaneko 《Nucleic acids symposium series》1991,(25):5-6
The 1'- and 5'-hydroxymethyl derivatives of carbovir and related purine derivatives were synthesized from 5-hydroxymethylcyclopentadiene. The anti-HIV activity evaluation of these compounds has revealed that 9-(c-4,t-5-dihydroxymethylcyclopent-2-en-r-1-yl)-9H-adenine is a prospective chemotherapeutic agent against AIDS. 相似文献
15.
Thomas E. Renau Mary S. Ludwig John C. Drach Leroy B. Townsend 《Bioorganic & medicinal chemistry letters》1992,2(12):1755-1760
A number of 7-alkyl 4-aminopyrrolo[2,3-
pyrimidine derivatives related to toyocamycin, sangivamycin and thiosangivamycin have been prepared and tested for their activity against human cytomegalovirus (HCMV). Only the thioamide substituted derivatives demonstrated biological activity. 相似文献
16.
Lin YI Li Z Francisco GD McDonald LA Davis RA Singh G Yang Y Mansour TS 《Bioorganic & medicinal chemistry letters》2002,12(17):2341-2344
Sixteen muraymycin derivatives 2-17 were synthesized based on selective reactions of the primary and secondary amino groups of muraymycin C1 (1) with isocyanates and aldehydes. Disubstituted derivatives 3-9 demonstrated no activity against either MraY or MurG at 相似文献
17.
Kundu MK Kundu MK Sundar N Kumar SK Bhat SV Biswas S Valecha N 《Bioorganic & medicinal chemistry letters》1999,9(5):731-736
Several Baylis-Hillman adducts and their derivatives were synthesized and evaluated as targeted potential anti-malarials. The compounds 4, 7 and 9 were found to have highest potency against P. falciparum in vitro. The in vivo test result of compound 4 and 9 against P. berghei demonstrated activity at 80 mg/Kg dose level. 相似文献
18.
Yahya El-Kattan Tsu-Hsing Lin Minwan Wu V. Satish Kumar Pravin L. Kotian Ajit Ghosh 《Nucleosides, nucleotides & nucleic acids》2013,32(10-12):1597-1611
A number of N 6 -substituted 9-[3-(phosphonomethoxy)propyl]adenine derivatives having hydroxymethyl at C-1′-position were prepared from the appropriate 6-chloroadenine derivative. The syntheses of the corresponding prodrugs of these compounds are also reported. These compounds showed poor activity against HCV in replicon assay. 相似文献
19.
Foroumadi A Oboudiat M Emami S Karimollah A Saghaee L Moshafi MH Shafiee A 《Bioorganic & medicinal chemistry》2006,14(10):3421-3427
A number of N-substituted piperazinylquinolone derivatives were synthesized and evaluated for antibacterial activity against Gram-positive and Gram-negative bacteria. Preliminary results indicated that most compounds tested in this study demonstrated comparable or better activity against Staphylococcus aureus and Staphylococcus epidermidis than their parent piperazinylquinolones as reference drugs. Among these derivatives, ciprofloxacin derivative 5a, containing N-[2-[5-(methylthio)thiophen-2-yl]-2-oxoethyl] residue, showed significant improvement of potency against staphylococci, maintaining Gram-negative coverage. 相似文献
20.
Thioacetal artemisinin derivatives, in particular, 10alpha-phenylthiodihydroartemisinins (5), 10beta-benzenesulfonyl-9-epi-dihydroartemisinin (9) and 10alpha-mercaptodihydroartemisinin (11), exhibit good growth inhibition activity against HUVEC proliferation at the concentration level of 1 microM. 相似文献