Synthesis and cytotoxic activity evaluation of 8-substituted quercetin derivatives / 国际药学研究杂志

Objective: To synthesize 8-substituted quercetin derivatives and test their cytotoxicity on human cancer cell lines, so as to find out hit or lead compounds via structure activity relationship(SAR)analysis. Methods: Using rutin as the raw material, quercetin was obtained by the acid hydrolysis of rutin, and the 8-substituted quercetin derivatives, 3a-3h, were synthesized via the whole hydroxyl protection of quercetin and then halogenation, followed by the Suzuki coupling or heck coupling reaction. The in vitro inhibitory activity of these derivatives was assayed by the MTT method using human cancer HepG2, HT-29 and K562 cell lines. Results and Conclusion: Eight new target compounds, 3a-3h, were synthesized, and their structures were confirmed by the 1H NMR, 13C NMR and MS data. The inhibitory effect of 3b-3h on HepG2 cell line, 3b and 3d on HT-29 cell line, and 3b-3d and 3f-3h on K562 cell line has remarkably and significantly enhanced than that of quercetin, and the present research results provide a suggestive preliminary SAR.

Synthesis of benzimidazole and benzothiazole derivatives as a sirtuins 2 inhibitor / 药学学报

A series of novel benzimidazole and benzothiazole derivatives were designed and synthesized as inhibitors of SIRT1-SIRT3. The target compounds were synthesized from potassium O-ethyldithiocarbonate through a three-step route. The structures of the obtained compounds were elucidated by 1H NMR and HR-MS. Of all compounds, six showed potent SIRT2-inhibitory activities with IC50 values ranging from 2.8 to 21.2 μmol·L-1. Among them, compound 10c displayed the most potent SIRT2-inhibitory activities (IC50 = 2.8 μmol·L-1), with more than 35-fold selectivity over SIRT1 and SIRT3 (IC50>100 μmol·L-1).

Design,synthesis and activity evaluation of novel 2-indolone derivatives as the c-Met kinase inhibitors / 国际药学研究杂志

Objective To design and synthesize novel 2-indolone derivatives as the c-Met kinase inhibitors. Methods With c-Met kinase inhibitor SU11274 as lead compound,a series of 2-indolone derivatives were designed according to the concept of bioiso-sterism. Then the target compounds(10a-10r)were synthesized from 2-indolone through 5-chlorosulfonation with chlorosulfonic acid, sulfonamidation with intermediate 3,condensation with 6a-6h,7a-7h and 4a-4b,respectively. Their inhibitory activity against c-Met and proliferation of MCF-7 cells were evaluated. Results and Conclusion The designed compounds were successfully prepared and their structures were confirmed by 1H NMR and ESI-MS. Some compounds had certain inhibitory activity against c-Met and prolif-eration of MCF-7 cells. An initial structure-activity relationship analysis of these compounds was performed to provide useful informa-tion for further optimization of their structures.

Synthesis and activity evaluation of novel tyrosine kinase inhibitors / 国际药学研究杂志

Objective To design and synthesize compounds with protein tyrosine kinase(PTK)inhibitory activity with L029 as the lead compound. Methods L029 derivatives were designed and synthesized from L029 by reduction and/or substitution with the 3-dimethylamino-1-propyl,methyl acetate,methyl propionate in its active H and other sites. PTK activity was measured by enzyme-linked immunosorbent assay(ELISA). The inhibitory rate was calculated to screen out the compounds with PTK inhibitory activity. Re-sults Five target compounds were synthesized and their structures were confirmed by 1H NMR and MS. Three compounds T2,T3 and T5 were screened out with strong PTK inhibitory activity. Conclusion The synthetic routes of the target compounds are simple with mild reaction condition,and 3 compounds show strong inhibitory activity by ELISA. These results can provide reference for the further design and synthesis of this kind of molecules.

Synthesis and anti-radiation activity of coumarinbenzyl (sulfoxide) sulfone derivatives / 国际药学研究杂志

Objective Using Ex-Rad as lead compound to design and synthesize coumarin benzyl(sulfoxide)sulfone derivatives with anti-radiation activity. Methods The target compounds were synthesized from methyl 2-mercaptoacetate and 4-bromomethylbenzoic acid through three steps. The anti-radiation activity was assayed by the MTT method using the HUVEC cells irradiated with 8Gy 60Co γ ray. Results Sixteen compounds containing a coumarin benzyl sulfoxide or sulfone group were synthesized and the structures were confirmed by 1H NMR and HRMS. Preliminary evaluation of the 16 compounds demonstrated that 6a, 6b, 6c and 6d exhibited potent anti-radiation activities. Conclusion The anti-radiation activities of 6a, 6b, 6c and 6d were significant, indicating that this kind of compounds is worth further study.

Synthesis and protein tyrosine kinases inhibitory activity of aroyl derivatives / 国际药学研究杂志

Objective Using Ex-Rad as a lead compound to design and synthesize aroyl derivatives with protein tyrosine ki?nases(PTK)inhibitiory activity. Methods 1-[(4-Fluorophenyl)amioncarbonyl]cyclopropanecarboxylic acid,and 2-oxo-1-phenyl-imidazolidine were used as raw materials to synthesize intermediates 3a-3d,respectively. The target compounds T1-T7 were synthe?sized by chloroformylation reaction with 3a-3d. Enzyme-linked immunosorbent assay(ELISA)was used and inhibitory rate was calcu?lated to screen out the compounds with PTK inhibitory activity. Results Seven new compounds containing aroyl groups were synthe?sized and their structures were confirmed by 1H NMR. The evaluation of the seven compounds demonstrated that PTK inhibitory activi?ty of T2 and T6 were stronger than that of the lead compound. Conclusion The synthetic method is simple,and the materials are cheap and readily available. T2 and T6 show strong PTK inhibitory activity by ELISA.

Synthesis and protein tyrosine kinases inhibitory activity of aroyl derivatives / 国际药学研究杂志

Objective Using Ex-Rad as a lead compound to design and synthesize aroyl derivatives with protein tyrosine kinases(PTK) inhibitiory activity. Methods 1-[(4-Fluorophenyl)amioncarbonyl] cyclopropanecarboxylic acid, and 2-oxo-1-phenylimidazolidine were used as raw materials to synthesize intermediates 3a-3d, respectively. The target compounds T1-T7 were synthesized by chloroformylation reaction with 3a-3d. Enzyme-linked immunosorbent assay (ELISA) was used and inhibitory rate was calculated to screen out the compounds with PTK inhibitory activity. Results Seven new compounds containing aroyl groups were synthesized and their structures were confirmed by 1H NMR. The evaluation of the seven compounds demonstrated that PTK inhibitory activity of T2 and T6 were stronger than that of the lead compound. Conclusion The synthetic method is simple, and the materials are cheap and readily available. T2 and T6 show strong PTK inhibitory activity by ELISA.

Synthesis and protein tyrosine kinases inhibitory activity of aryl benzyl sulfones derivatives / 国际药学研究杂志

Objective To use Ex-Rad as a lead compound to design and synthesize aryl benzyl sulfones derivatives with protein tyrosine kinases(PTK) inhibitory activity. Methods 2-Naphthol was used as a raw material to synthesize intermediates 3a-3f. The target compounds 4a, 4d, and 5a-5f were synthesized by oxidizing 3a-3f in acetic acid with H2O2. Enzyme-linked immunosorbent assay(ELISA) was used and inhibition rate was calculated to screen out the compounds with PTK inhibitory activitity. Results Eight compounds containing a sulfone or sulfoxide group were synthesized and the structures were confirmed by 1H NMR. Preliminary evaluation of the 8 compounds demonstrated that the PTK inhibitory activity of 5c was much stronger than that of the lead compound. Conclusion The synthetic method is simple, and the materials are cheap and readily available. 5c shows strong PTK inhibitory activity by ELISA.

Synthesis and protein tyrosine kinases inhibitory activity of aryl benzyl sulfones derivatives / 国际药学研究杂志

Objective To use Ex-Rad as a lead compound to design and synthesize aryl benzyl sulfones derivatives with protein tyrosine kinase’(PTK) inhibitory activity. Methods 2-Naphthol was used as a raw material to synthesize intermediates 3a-3f. The target compounds 4a, 4d, and 5a-5f were synthesized by oxidizing 3a-3f in acetic acid with H202. Enzyme-linked immunosorbent assay’ELISA) was used and inhibition rate was calculated to screen out the compounds with PTK inhibitory activitity. Results Eight compounds containing a sulfone or sulfoxide group were synthesized and the structures were confirmed by 1H NMR. Preliminary evaluation of the 8 compounds demonstrated that the PTK inhibitory activity of 5c was much stronger than that of the lead compound. Conclusion The synthetic method is simple, and the materials are cheap and readily available. 5c shows strong PTK inhibitory activity by ELISA.

Respuesta inmune celular en pacientes con lesiones benignas y malignas del cuello uterino / Cellular immune response in patients presenting with benign and malignant lesions of cervix

Objetivo: estudiar parámetros inmunológicos en pacientes con lesiones intraepiteliales (NIC) y carcinoma in situ del cuello uterino en el Instituto Nacional de Oncología y Radiobiología durante el año 2009. Métodos: se realizó un estudio en 20 pacientes donde se determinaron las características inmunofenotípicas de los linfocitos de sangre periférica mediante citometría de flujo y la capacidad funcional frente a diversos mitógenos utilizando el método de síntesis de DNA. El análisis de correlación entre variables inmunológicas y epidemiológicas se realizó mediante el cálculo del coeficiente de correlación de Pearson. Para las pruebas estadísticas se utilizó el paquete estadístico SPSS (versión 11.5). Resultados: la subpoblación de los linfocitos Tc CD8+, mostró valores superiores estadísticamente significativos (p=0,004) solo para las pacientes con NIC I. En todas las pacientes, independientemente del estadio de la enfermedad y del mitógeno utilizado, los índices de estimulación (IE) resultaron inferiores a los valores del grupo control. Conclusión: las alteraciones en el sistema inmune en las pacientes con patología de cuello están asociadas al progreso de la enfermedad y las células T son fundamentales en el control de la progresión de las lesiones

Objective: To study the immunologic parameters in patients presenting with intraepithelial lesions (IEL) and carcinoma in situ of cervix in the National Institute of Oncology and Radiotherapy over 2009. Methods: A study was conducted in 20 patients to determine the immuno-phenotypical of lymphocytes in peripheral blood by flow-cytometry and the functional ability in face of diverse mitogen using the AND synthesis method. The correlation analysis among the immunologic and epidemiologic variables was carried out by an estimation of Pearson's correlation coefficient. For the statistic test the SPSS statistical package was used (version 11.5). Results: The subgroup of Tc + CD8 lymphocytes showed higher values statistically significant ( p= 0.004) only for patients presenting with IEL. In all patients, independently of disease stage and of the mitogen used, the stimulation rates (SR) were lower than the values of controls. Conclusions: The alterations in the immune system in patients with cervix pathology are associated with the progress of lesions