نتایج جستجو برای: isolation and structure elucidation
تعداد نتایج: 16988364 فیلتر نتایج به سال:
In our previous papers, wereported the structure and stereochemistry of thiomarinol A (previously referred to as thiomarinol)1'2*, produced by a marine bacterium, Alteromonas rava sp. nov. SANK733903), which has antimicrobial activity against Gram-positive and Gramnegative bacteria. Thiomarinol A (TMA) is a hybrid antibiotic composed of a pseudomonic acid analogue and holothin. In this paper we...
asymmetric membranes are widely used in many industrial membrane separation processes. the major advantage of membrane filtration over the conventional process is its ability to remove a wider spectrum of particles without using any chemicals. hollow fiber configuration offer many advantages over flat-sheet or tubular membranes. the spinning process of hollow fiber may look simple, yet it is te...
1 Advanced Chemistry Development, Moscow Department, 6 Akademik Bakulev St., Moscow 117513, Russia 2 Advanced Chemistry Development Inc., 90 Adelaide Street, Suite 702, Toronto, Ontario, Canada, M5H 3V9 3 Rapid Structure Characterization Group, Global Pharmaceutical Sciences, Pharmacia Corporation, 7000 Portage Road, Kalamazoo, Michigan 49001-0199, USA 4 Novosibirsk Institute of Organic Chemist...
abstract abstract of thesis (includes summary, goals, execution methods, and results) story “al-obnosat al-bayza” is one of the short stories from “hanna mineh” collection. this story is a selection of lives of some humans during a voyage together, each of them is a symbol of human nature (love, mind, kindness) and examine social, cultural, and political aspects of governing system, and it...
Advances in radical-based catalytic reactions have created a demand for understanding their mechanistic underpinnings. Here, we present the isolation, structural elucidation, and theoretical analysis of catalytically relevant charge-transfer species formed between azidyl radical (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO). The unusual bond angles pancake bonding these two fragments highligh...
*Correspondence: Johannes F. Imhoff, Kieler Wirkstoff-Zentrum KiWiZ, GEOMAR Helmholtz Centre for Ocean Research Kiel, Am Kiel-Kanal 44, 24106 Kiel, Germany e-mail: [email protected] The isolation and structure elucidation of malettinins A–C (1–3) along with the new malettinin E (4) are described. The compounds were produced by the fungus Cladosporium sp. strain KF501, which was isolated from th...
a novel acrylic acid-functionalized fe3o4 magnetic nanoparticle with a core-shell structure was developed for utilization as a heterogeneous organosuperacid in chemical transformations. the structural, surface, and magnetic characteristics of the nanosized catalyst were investigated by various techniques such as transmission electron microscopy (tem), thermogravimetric analysis (tga), and ft-ir...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید