rhernand@ulima.edu.pe; fccarras@ulima.edu.pe;vaisberg@upch.pe

rhernand@ulima.edu.pe; beyinorg@chemic.uni-leipzig.de; jpascastillo@yahoo.es; espodine@ciq.uchile.cl; Abraham.vaisberg@upch.pe

rhernand@ulima.edu.pe, fccarras@ulima.edu.pe

The palladium (II) bis-chelate Pd mathematical equation and platinum (II) tetranuclear mathematical equation complexes of benzaldehyde thiosemicarbazone derivatives have been synthesized, and characterized by elemental analysis and IR, FAB(+)-mass and NMR (¿1H, ¿13C) spectroscopy. The complex mathematical equation [HL2 = m-CN-benzaldehyde thiosemicarbazone] shows a square-planar geometry with two deprotonated ligands (L) coordinated to PdII through the nitrogen and sulphur atoms in a transarrangement, while the complex mathematical equation [HL4 = 4-phenyl-1-benzaldehyde thiosemicarbazone] has a tetranuclear geometry with four tridentate ligands coordinated to four PtII ions through the carbon (aromatic ring), nitrogen, and sulphur atoms where the ligands are deprotonated at the NH group. The in vitro antitumor activity of the ligands and their complexes was determined against differen...

En el presente trabajo se informa acerca de la preparación y caracterización de los compuestos orgánicos derivados del furaldehído tiosemicarbazona y sus respectivos complejos metálicos de paladio(II) y co bre(II). El análisis elemental y las técnicas espectroscópicas confirman las fórmulas estructurales propuestas para los ligantes orgánicos y sus respectivos complejos de paladio(II) y cobre(II). La actividad biológica in vitro de los ligantes y los complejos metálicos reveló que los complejos de paladio(II), Pd(LF4)2 y Pd(LF5)2 presentan mayor actividad citotóxica in vitro (CI50= 0.28 - 1.23 µM) con respecto a los ligantes frente a diferentes líneas de células tumorales de humano.

El presente trabajo informa acerca de la preparación, caracterización y actividad anti tu moral de nuevos compuestos orgánicos (ligantes) del tipo tiosemicarbazona, RCH=N-NHC(S)-NH2 [R=pirrol-2-carboxaldehído y tiofeno 2-carboxaldehído] y sus complejos me tálicos de paladio(II). El análisis elemental y las técnicas espectroscópicas de infrarrojo y resonancia magnética nuclear de protón y carbono revelan que los ligantes tiosemicarbazonas están desprotonados y se encuentran enlazados al centro metálico a través de dos áto mos de nitrógeno (N) y azufre (S) en una configuración trans.

Introduction: Diverse natural products of the Annona genus has been used in the treatment of the cancer. Annona cherimola has diverse pure compounds of its seeds and stems that have demonstrated antitumor activity against nasopharyngeal carcinoma.   Objective: To determine the cytotoxic effect of the Annona cherimola seed extract on the cell lines MCF-7 (Human breast adenocarcinoma), ME-180(epidermal carcinoma of the cervix), K562 (chronic myeloid leukemia) and 3T3 (normal mouse fibroblasts).   Materials and methods: The lines MCF-7, ME-180, K 562 and 3T3, were exposed to four concentrations of the Annona cherimola seed ethanolic extract (0.125, 0.031, 0.008, 0.002mg/mL), also to different concentrations of 5-fluorouracil (5-FU) (0.01563, 0.00391, 0.00098, 0.00024mg/mL) and Cisplatin (0.00250, 0.00063, 0.00016, 0.00004mg/ mL) which were used as a positive control...

Introduction: Diverse natural products of the Annona genus has been used in the treatment of the cancer. Annona cherimola has diverse pure compounds of its seeds and stems that have demonstrated antitumor activity against nasopharyngeal carcinoma.   Objective: To determine the cytotoxic effect of the Annona cherimola seed extract on the cell lines MCF-7 (Human breast adenocarcinoma), ME-180(epidermal carcinoma of the cervix), K562 (chronic myeloid leukemia) and 3T3 (normal mouse fibroblasts).   Materials and methods: The lines MCF-7, ME-180, K 562 and 3T3, were exposed to four concentrations of the Annona cherimola seed ethanolic extract (0.125, 0.031, 0.008, 0.002mg/mL), also to different concentrations of 5-fluorouracil (5-FU) (0.01563, 0.00391, 0.00098, 0.00024mg/mL) and Cisplatin (0.00250, 0.00063, 0.00016, 0.00004mg/ mL) which were used as a positive control...

Corrección del artículo (29 de marzo de 2015): https://doi.org/10.1155/2015/915270

With the ligands 4-phenyl-1-(furan-2-carbaldehyde)thiosemicarbazone, HTSC1,(1), 4-phenyl-1-(5'-phenyl-furan-2-carbaldehyde)thiosemicarbazone, HTSC2(2),o-methoxy-benzaldehydethiosemi-carbazone, HTSC3(3), ando-cyano-benzaldehydethiosemicarbazone, HTSC4(4), the correspondingpalladium(II) complexes, Pd(TSC1)2(5), Pd(TSC2)2(6),Pd(TSC3)2(7), and Pd(TSC4)2(8)weresynthesized and characterized by elemental analysis and spectroscopic techniques. The crystal struc-ture of Pd(TSC3)2(7) was determined by single-crystal X-ray diffraction. Complex7shows a square-planar geometry, where two deprotonated ligands are coordinated to the PdIIcenter through the ni-trogen and sulfur atoms in atransarrangement.In vitroantitumor studies against different humantumor cell lines have revealed that the palladium(II) complexes5–8are more cytotoxic (IC50valuesin the range of 0.21 – 3.79µM) than their correspondin...

rhernand@ulima.edu.pe; mlcacere@ulima.edu.pe; fccarras@ulima.edu.pe; abraham.vaisberg@upch.pe; espodine@ciq.uchile.cl; jmanzur@ing.uchile.cl; hennig@chemic. uni-leipzig.de; sieler@uni-leipzig.de; beyinorg@uni-leipzig.de