Convenient Preparative Methods of 3-Hydroxy Acids from Carboxylic Acids and Various Lactones by the Reactions of 3-Hydroxy Acids and 3, 4-Unsaturated Acids with Formaldehyde
نویسندگان
چکیده
منابع مشابه
Antifungal 3-hydroxy fatty acids from Lactobacillus plantarum MiLAB 14.
We report the identification and chemical characterization of four antifungal substances, 3-(R)-hydroxydecanoic acid, 3-hydroxy-5-cis-dodecenoic acid, 3-(R)-hydroxydodecanoic acid and 3-(R)-hydroxytetradecanoic acid, from Lactobacillus plantarum MiLAB 14. The concentrations of the 3-hydroxy fatty acids in the supernatant followed the bacterial growth. Racemic mixtures of the saturated 3-hydroxy...
متن کاملSimultaneous quantitation of 4-hydroxy-3-methoxymandelic (vanilmandelic) and 4-hydroxy-3-methoxyphenylacetic (homovanillic) acids in human urine.
We describe a simultaneous analysis for vanilmandelic and homovanillic acids in urine. An aliquot of a final extract, containing phenylpropriopionic acid as external standard, is dried, an internal standard (resorcinol) is added, and the mixture is silylated and chromatographed. The two compounds are identified from their characteristic retention times and from their elution behhavior in relati...
متن کاملIsolation and determination methods for brain cerebrosides, hydroxy fatty acids, and unsaturated and saturated fatty acids *
A new method is described for the isolation of nearly pure total cerebrosides from fresh brain. Florisil columns are used to separate the cerebroside hydroxy and normal acids, in the form of their esters, and to separate the saturated and unsaturated esters of each group. The esters within each class are determined by gas chromatography, the hydroxy esters being run as the methyl ethers. Yields...
متن کاملCryptococcal 3-Hydroxy Fatty Acids Protect Cells Against Amoebal Phagocytosis
We previously reported on a 3-hydroxy fatty acid that is secreted via cryptococcal capsular protuberances - possibly to promote pathogenesis and survival. Thus, we investigated the role of this molecule in mediating the fate of Cryptococcus (C.) neoformans and the related species C. gattii when predated upon by amoebae. We show that this molecule protects cells against the phagocytic effects of...
متن کاملP28: The Effects of Omega-3 and 6 Fatty Acids on Hippocampus and Learning
One of the most nervous system evolution are memory and learning in humans. Learning is a skill that enhances synaptic activity in the hippocampus of prefrontal cortex. In fact, basic passive learning is communication between the conditioned and Unconditioned stimulation. Passive learning involves three steps: habit, education and remember. According to the results of investigations, the hippoc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Japan Oil Chemists' Society
سال: 1980
ISSN: 1884-2003
DOI: 10.5650/jos1956.29.43