Attempts to convert 3-acetoxy-5,19-cyclo-pregna-6,20-dione (8) into a cyclocitrinol-related steroid with a bicyclo[4.4.1]-undecane AB-ring substructure through a Lewis acid-assisted fragmentation failed. Instead, treating 8 with an excess of Ac2O and BF3·Et2O afforded B-homo steroid 9 ...
Acetic acid (CH$_3$COOH) has been detected mainly in hot molecular coreswhere the distribution between oxygen (O) and nitrogen (N) containing molecularspecies is co-spatial within the telescope beam. Previous work has presumedthat similar cores with co-spatial O and N species may be an ...
LEWISG.LONGSWORTHSpringer NatureNatureShedlovsky T, MacInnes DA, Longworth LG. Limiting mobilities of some monovalent ions and dissociation constant of acetic acid at 200C. Nature, 1932; 75:774-775.T.Shedlovsky, D.A.MacInnes and L.G.Longworth, "Limiting mobilities of some monovalent and ions...
Metal-based Lewis acid catalystsSynthetic methodsAcylalsProtectionAldehydesSelective protection of carbonyl groups such as oxathioacetals, acylals, acetals and dithioacetals is the vital steps in organic chemistry. Among these groups, protection of aldehydes such as diacetates (acylals) has attracted ...
Report on Acetic and Propionic Acid Mold Inhibitors in BreadLewis H McrobertsJournal of Association of Official Agricultural Chemists
Abstract The immunomodulatory effects of Wy-41,770 (5H-dibenzo[a,d)cyclohepten-5-ylidene)acetic acid, were compared to levamisole and indomethacin in several in vivo models. In the Jerne plaque assay, Wy-41,770 (1 and 100 mg/kg, p.o.) administered on day 1 after sensitization ...
Alpha-haloalkyl (3-indolyl) acetic acid derivativesdoi:US3242192 AComplete Patent Searching Database and Patent Data Analytics Services.Tsung-ying, ShenSarett, Lewis H.US
METHODS FOR IMPROVING ETHANOL YIELD BY ACETIC ACID ADDITIONLEWIS STEPHEN MNARENDRANATH NEELAKANTAM V
ChemInform Abstract: Synthesis of 2-(2-Hydroxyacetyl)pyrrole-1-acetic Acid: A New Nitrogen Heterocycle.pyrrole derivativesChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an ...
Lewis , The antiinflammatory profile of (5H-dibenzo[A,D]-cyclohepten-5-ylidene) acetic acid (Wy-41, 770), an agent possessing weak prostaglandin synthetase inhibitory activity that is devoid of gastric side effects , Agents and Actions 14 , 654–661 (1984)....