نتایج جستجو برای: active β
تعداد نتایج: 609822 فیلتر نتایج به سال:
We quantitatively interpret the recently discovered intriguing phenomenon related to resonance Hyper-Raman (HR) scattering. In resonance HR spectra of all-trans-β-carotene (β-carotene) in solution, vibrations of proximate solvent molecules are observed concomitantly with the solute β-carotene HR bands. It has been shown that these solvent bands are subject to marked intensity enhancements by mo...
Background: Antibiotics with β-Lactam rings (β-Lactams), since they were discovered, have enhanced the typical treatment for bacterial infections. Though their resistance can quickly spread on a universal scale, is primarily caused by production of β-lactamases. Hence, there serious demand to design and create new anti-β-lactamases or inhibitors. Nowadays, use β-lactamase inhibitors β-lactams r...
Phagocytes engulf pathogenic microbes, kill them and degrade their cellular macromolecules by hydrolytic enzymes in phagolysosomes. However, such enzymes are unable to degrade some microbial polysaccharides, and fate of such indigestible polysaccharides in phagocytes remains uncertain. Using the extracellular domain of Dectin-1 as β-glucan-specific probes, we succeeded in detection of soluble a...
The increase in new cases of drug resistance to first-line drugs such as ethambutol (ETB) makes it necessary develop improvements for antituberculosis drugs. A method improving the bioavailability active pharmaceutical ingredient (API) was investigated preventing and side-effects In this study, an delivery system using β-cyclodextrin (β-CD) supramolecular carrier ETB prepared kneading method. i...
the synthesis of twenty five esters of testosterone (17β -hydroxyandrost- 4-en-3-one) is described. all esters are derivatives of cycloalkycarboxylic acids. some of the esters possess α- , β -and/or & - substitution in the ester side-chain. the work was undertaken in order to evaluate long-acting male antifertility effect of such esters. most of the compounds, especially compound no.1, were fou...
A convenient synthetic route for the synthesis of biologically active functionalized piperidines usingZn(OAc)2.2H2O as a highly efficient catalyst via five-component reaction of aromatic aldehydes,anilines and β-ketoesters at ambient temperature has studied. Mild reaction conditions, simplicity ofoperation and work-up procedures with no necessity of chromatographic purification steps, theavaila...
The synthesis of twenty five esters of testosterone (17β -hydroxyandrost- 4-en-3-one) is described. All esters are derivatives of cycloalkycarboxylic acids. Some of the esters possess α- , β -and/or & - substitution in the ester side-chain. The work was undertaken in order to evaluate long-acting male antifertility effect of such esters. Most of the compounds, especially compound No.1, wer...
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