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61.
62.
Journal of Fluorescence - The methyl orange [C14H14N3SO3Na], an azo dye exhibited strong emission and large Stokes shift in various solvents, and the largest shift (Δλ = 125.51nm or... 相似文献
63.
Kumar Nitish Gulati Harmandeep Kaur Sharma Aakriti Heer Shilpa Jassal Anupmjot Kaur Arora Lovenish Kaur Simranpreet Singh Atamjit Bhagat Kavita Kaur Arshmeet Singh Harbinder Singh Jatinder Vir Bedi Preet Mohinder Singh 《Molecular diversity》2021,25(1):603-624
Molecular Diversity - Breast cancer is the most prominent, frequently diagnosed and leading cause of death among women. Estrogen is an agonist of estrogen receptor alpha (ER-α), expressed in... 相似文献
64.
Ali A. Husain Arthur M. Maknenko Prof. Dr. Kirpal S. Bisht 《Chemistry (Weinheim an der Bergstrasse, Germany)》2016,22(18):6223-6227
The synthesis of novel spatially directional multivalent resorcin[4]arene cavitand glycoconjugates (RCGs) and their ability to catalyze organic reactions is reported. The β‐d ‐glucopyranoside moieties on the upper rim of the “bowl”‐shaped resorcin[4]arene cavitand core are capable of multiple hydrogen‐bond interactions resulting in a pseudo‐cavity, which has been investigated for organic transformations in aqueous media. The RCGs have been demonstrated to catalyze thiazole formation, thiocyanation, copper(I)‐catalyzed azide alkyne cycloaddition (CuAAC), and Mannich reactions; they impart stereoselectivity in the three‐component Mannich reaction. Thermodynamic values obtained from 1H diffusion‐ordered spectroscopy (DOSY) experiments suggest that the upper saccharide cavity of the RCG and not the resorcin[4]arene cavity is the site of the complexation event. 相似文献
65.
Avani R. Ranchchh Kavita Chavda Roshani Bhanderi Suman Patel U. C. Bhoya 《Molecular Crystals and Liquid Crystals》2018,665(1):33-42
AbstractSevere operation conditions in the agriculture industry and numerous influencing factors complicate the selection of a contact material for switching devices. Attempts have been made to change the Ag-CdO contact material to a less toxic one. Environmentally friendly copper-base contact materials have been created for devices, which operate in agricultural electric systems, meanwhile being low-cost and with pre-set level of reliability in terms of transient resistance. 相似文献
66.
67.
K. Pushpa P. S. Bisht O. P. S. Negi 《International Journal of Theoretical Physics》2014,53(7):2222-2230
Generators of \(\operatorname{SO}(8)\) group have been described by using direct product of the Gamma matrices and the Pauli Sigma matrices. We have obtained these generators in terms of generalized split octonion also. These generators have been used to describe the rotational transformation of vectors in \(\operatorname{SO}(7)\) symmetry group. 相似文献
68.
A simple, rapid and sensitive hollow-fiber with drop-to-drop solvent microextraction (HF-DDSME) combined with gas chromatography?Cmass spectrometry (GC?CMS) has been successfully developed for extraction and determination of antidepressants drugs (AD) in blood sample. The parameters that affect the separation and preconcentration of AD from sample solution were investigated. Calibration curve obtained for three AD were in the range of 100?C1,000; 150?C1,200; and 80?C1,200 ng mL?1 for amitriptyline, imipramine, and promethazine, respectively, with correlation coefficient (R 2 ) between 0.990 and 0.997. The limit of detection (LOD) obtained for amitriptyline, imipramine and promethazine was 25, 30 and 18 ng mL?1, respectively. The developed method has been successfully applied for the determination of AD concentration in blood sample, and the recoveries for the spiked samples were in the range of 92.3?C97.6%. The sample preparation procedure is very simple, effective and virtually solvent-free, and indicated to be a good alternative for the traditional liquid?Cliquid extraction. Finally, the proposed method was successfully applied for the determination of drug concentration of AD in human blood sample. 相似文献
69.
An improved clean methodology has been developed for the synthesis of pyrido[2,3‐d]pyrimidin‐4‐ones through a simple one‐pot reaction of chalcones, ketones, and ammonium acetates via a [3+2+1] ring annulation. This dry media methodology, where the three components absorbed over solid inorganic support under microwave irradiation, afforded the desired product in a short reaction time. 相似文献
70.
An access to different glycohybrids involving nucleophilic addition of N- and C-nucleophiles to the butenonyl glycosides followed by cyclization and subsequent reactions is reported. In the present communication, three different prototypes, β-D-glucopyranosylmethyl pyrazolines, β-D-glucopyranosylmethyl pyrimidines and β-D-glucopyranosylmethyl biphenyls, were prepared in moderate to good yields. 相似文献