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Maggio B Raimondi MV Raffa D Plescia F Cascioferro S Plescia S Tolomeo M Di Cristina A Pipitone RM Grimaudo S Daidone G 《European journal of medicinal chemistry》2011,46(1):168-174
Several new N-phenyl-1H-indazole-1-carboxamides 1c-h and 4l,m were prepared by reacting phenyl isocyanate derivatives 3a,b with 3-amino-1H-indazole derivatives 2c,e,g or 1H-indazole 2l respectively. Chemical transformations of compounds 1a,b and 1g,h gave 3-acetamido-N-phenyl-1H-indazole-1-carboxamide derivatives 5a,b, and 3,5-diamino-N-phenyl-1H-indazole-1-carboxamide derivatives 4i, j respectively. Finally, 3,5-diacetamido-N-phenyl-1H-indazole-1-carboxamide derivatives 6a,b were prepared by acetylation of 4i, j. Some of synthesized compounds were evaluated for their in vitro antiproliferative activity against the full NCI tumor cell lines panel derived from nine clinically isolated cancer types (leukemia, non-small cell lung, colon, CNS, melanoma, ovarian, renal, prostate and breast). Compound 1c, the most active of the series, was able to inhibit cell growth showing GI50 values in the 0.041-33.6 μM range, mean GI50 1.90 μM, being very effective against colon and melanoma cell lines. Cell cycle analysis in K562 cells showed that 1c causes a marked increase of cells in G0-G1 phase. Moreover, it increases the ratio between hypophosphorylated pRb and total pRb. 相似文献
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Kumar RS Idhayadhulla A Abdul Nasser AJ Selvin J 《European journal of medicinal chemistry》2011,46(2):804-810
A series of 1,4-dihydropyridine derivatives (1a-g) were prepared from three compounds condensation reaction of ethylacetoacetate, aromatic aldehyde and ammonium hydroxide. A new series of compounds (2a-g) were prepared from compounds (1a-g) via reaction with thiosemicarbazide using the condensation method. The synthesized compounds were confirmed by IR, 1H NMR, 13C NMR, mass spectral and elemental analyses. The synthesized compounds (1a-g) and (2a-g) were also screened for anticoagulant properties. 相似文献
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Fan W Wu Y Li XK Yao N Li X Yu YG Hai L 《European journal of medicinal chemistry》2011,46(9):3651-3661
Glucosyl derivates exhibited favorable distribution to the brain. However, bidirectional transport of glucose transporter 1 might decrease concentrations of the prodrugs in brain before the release of parent drugs. To overcome this defect, glucosyl thiamine disulfide prodrugs 1a-1c incorporating naproxen were designed and synthesized. Furthermore, prodrug 2 and 3 were also prepared as control. The favorable physicochemical properties of these prodrugs were verified by stability and metabolism studies. Results from the in vivo distribution study indicated that 1a-1c, and 1b in particular, significantly increased the level of naproxen in brain when compared to 2 and 3. The study suggested glucosyl thiamine disulfide was a promising carrier to enhance the brain bioavailability of central nervous system active drugs. 相似文献
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《Evidence-based Healthcare》2004,8(3):122-124
QuestionDoes a healthcare quality improvement programme, incorporating education and claims-based feedback about practice-specific models of monitoring diabetes care, increase the regularity with which primary care physicians assess people with diabetes mellitus receiving Medicare benefits?Study designCluster randomised controlled trial.Main results22, 971 Medicare recipients with diabetes who could be linked with one of 477 study physicians in 123 non-urban counties were identified. The health care quality improvement programme significantly improved monitoring of circulating glycosylated haemoglobin (HbA1c) levels in people with diabetes compared with a no-intervention comparison group (see Table 1). There was no significant difference in number of eye exams or monitoring of urine protein levels between groups.
Table 1 Proportion of people tested with quality indicators at baseline and follow-up. | |||||||
Quality indicator test | Health care quality improvement programme | Comparison Group | Difference in change from baseline between intervention and control groups (95% CI) | ||||
Proportion of people tested at baseline (%) | Proportion of people tested at follow up (%) | Change from baseline to follow up | Proportion of people tested at baseline (%) | Proportion of people tested at follow up (%) | Change from baseline to follow up | ||
HbA1c | 34.3 | 51.1 | 16.8 | 37.2 | 50.2 | 13.0 | 4.0 (0.7 to 7.3) |
Eye exams | 38.9 | 39.4 | 0.5 | 39.3 | 39.5 | 0.2 | 1.0 (-1.1 to 3.1) |
Quantitative urine protein | 2.8 | 4.6 | 1.8 | 2.7 | 4.4 | 1.7 | 0.1 (-2.1 to 3.0) |