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71.
A simple and sensitive spectrophotometric method has been developed for the determination of the antihypertensive drug captopril and anticancer drug 6‐mercaptopurine, in their trithiocarbonate (TTC) form by using Pd(II) chloride as a coloring reagent. Captopril TTC forms a stable dark yellow colored complex with λmax 383 nm, molar absorption coefficient 1.35 × 105 l/mole/cm and a Beer's law range from 0.084‐1.26 ppm. 6‐Mercaptopurine TTC forms a stable deep yellow colored complex with λmax 345 nm, molar absorption coefficient 6.9 × 105 l/mole/cm and a Beer's law range from 0.0319 ppm to 3.519 ppm. The M: L ratio of palladium: TTC complexes were confirmed by Job's method of continuous variance and mole ratio method and was found to be 1:1 for both captopril TTC as well as 6‐mercaptopurine TTC. In addition, on the basis of, FTIR, 1H NMR, ESR and thermal analysis data a plausible structure of mononuclear Pd(II) complex of Captopril TTC and 6‐mercaptopurine TTC has been reported. 相似文献
72.
Sanjay Kumar Saxena Archana Mukherjee Yogendra Kumar Ramu Ram A. S. Tapase Vivek J. Anand Ashutosh Dash 《Journal of Radioanalytical and Nuclear Chemistry》2014,302(3):1237-1243
‘Permanent seed implantation’ using 125I- seeds has emerged as an effective treatment modality for management of prostate cancer. An indigenous technology for the production of 125I brachytherapy sources (‘BARC 125I Ocu-Prosta seed’) has been developed. In this current work, we describe an overview of our experience on large scale production of 125I brachytherapy sources, their quality assessment, in vivo bio-evaluation and initial experience on their journey from bench to bed-side for the treatment of prostate cancer. 相似文献
73.
Devi Jai Pachwania Sushila Kumar Deepak Jindal Deepak Kumar Jan Suraya Dash Ashutosh K. 《Research on Chemical Intermediates》2022,48(1):267-289
Research on Chemical Intermediates - Organotin(IV) complexes are gaining major attention as drug candidates, accordingly we have synthesized a cluster of novel diorganotin(IV) complexes R2SnClL... 相似文献
74.
75.
Subia Ambreen Kiran Gupta Sadhana Singh D. K. Gupta Stephane Daniele N. D. Pandey Ashutosh Pandey 《Transition Metal Chemistry》2013,38(8):835-841
Reactions of Ti(OBus)4 and Ti(OBun)4 with chloroacetic acids (mono-, di-, and tri-) were carried out in toluene in 1:1 and 1:2 molar ratios at room temperature to generate new precursors of titania. These modified alkoxides/oxo-alkoxides were characterized by spectroscopic methods. A solution of Ti(OBun)2(OOCCCl3)2 in toluene left for crystallization at ?30 °C yielded single crystals of the product Ti6(μ2-O)2(μ3-O)2(μ2-OC4H9)2(OC4H9)6(OOCCCl3)8. Single-crystal X-ray diffraction revealed the molecular structure to be composed of a hexanuclear unit in which two Ti2O10 units (made by two edge-sharing octahedra) are linked with two corner-sharing octahedra. 相似文献
76.
Jayaraman Kannappan Aditya N. Khanvilkar Gourav M. Upadhyay Ashutosh V. Bedekar 《Tetrahedron: Asymmetry》2017,28(10):1297-1303
The design and synthesis of a few simple N-benzyl derivatives of isobornyl amine is presented. The derivatives have been assessed as chiral solvating agents for effective discrimination of the signals of some acids in NMR analysis. The single crystal X-ray analysis of the salts of (R)-mandelic acid with two of the title derivatives help to understand the supramolecular interactions and assign the induced chemical shifts in 1H NMR analysis. The title derivative is found to be suitable for quantitative determination of the enantiomeric excess of unknown enantiomeric purity as well as being efficient in resolving racemic mandelic acid. 相似文献
77.
Sanjay Kumar Saxena Yogendra Kumar Ashutosh Dash 《Journal of Radioanalytical and Nuclear Chemistry》2012,294(2):171-177
An indigenous technology for the production of 125I brachytherapy sources has been developed for the management of intraocular cancer. This indigenous method of producing 125I seeds represents a new paradigm, and a thorough quality evaluation of the seeds in accordance with Atomic Energy Regulatory Board (AERB) of India was carried to ensure their safety during therapy. In this current work, we describe an overview of our experience, the efforts made in establishing enviable quality analysis of 125I seeds to ensure their safety in episcleral plaque brachytherapy. 相似文献
78.
Aspects of yield and specific activity of (n,γ) produced 177Lu used in targeted radionuclide therapy
K. V. Vimalnath Priyalata Shetty Sharad P. Lohar V. C. Adya S. K. Thulasidas Sudipta Chakraborty Ashutosh Dash 《Journal of Radioanalytical and Nuclear Chemistry》2014,302(2):809-812
177Lu-labeled receptor avid peptides and monoclonal antibodies have been effectively used in targeted tumor therapy, owing to the ideally suited decay properties and favourable production logistics of 177Lu [T½ = 6.65 days; Eβ(max) = 497 keV (78.6 %); Eγ = 208 keV (11.0 %)]. The specific activity of 177Lu produced by the (n,γ) route is one of the important criteria, which determines the efficacy of 177Lu-labeled receptor-avid biomolecules. The present article highlights that the specific activity of (n,γ) produced 177Lu cannot be calculated by simply dividing the produced activity by the mass of the target irradiated, unlike other (n,γ) produced medical radioisotopes and there is a significant enhancement of specific activity due to the burn up of the Lu target during irradiation, which is an added advantage towards the utilization of 177Lu in receptor specific therapeutic radiopharmaceuticals. 相似文献
79.
Mishra AK Prajapati RK Verma S 《Dalton transactions (Cambridge, England : 2003)》2010,39(42):10034-10037
This communication explores the effect of varying substituent bulk at the N9 position of the adenine moiety and its effect in dictating the structural aspects of silver-adenine frameworks. While adenine alone or 9-benzyl substituted ligand afforded mono and dinuclear dimeric entities, n-propyl substitution at the N9 position results in the formation of a metallaquartet. Longer n-alkyl chains (hexyl and nonyl) resulted in the formation of linear polymeric chains, via N1 and N7 coordination. 相似文献
80.
Anne‐Christine Chamayou Chaitali Biswas Ashutosh Ghosh Christoph Janiak 《Acta Crystallographica. Section C, Structural Chemistry》2009,65(8):m311-m313
The crystal structure of the title compound, [Cu(C6H4NO2)(C2H3O2)(C3H4N2)(H2O)]·0.87H2O, has a square‐pyramidal‐coordinated CuII centre (the imidazole is trans to the picolinate N atom, the acetate is trans to the picolinate –CO2 group and the aqua ligand is in a Jahn–Teller‐elongated apical position) and has two symmetry‐independent molecules in the unit cell (Z′ = 2), which are connected through complementary imidazole–picolinate N—H...O hydrogen bonding. The two partially occupied solvent water molecules are each disordered over two positions. The disordered solvent water molecules, together with pseudosymmetry elements, support the notion that a crystal structure with multiple identical chemical formula units in the structural asymmetric unit (Z′ > 1) can represent a crystal `on the way', that is, a kinetic intermediate form which has not yet reached its thermodynamic minimum. Neighbouring molecules form π–π stacks between their imidazole and picolinate N‐heterocycles, with centroid–centroid distances in the range 3.582 (2)–3.764 (2) Å. 相似文献