Identification Of Alkaloids Research Articles

Identification of alkaloids in products of processing of belladonna grass

Identification of alkaloids in products of processing of belladonna grass

Isolation and Identification of Alkaloids from Arundo donax

Isolation and Identification of Alkaloids from Arundo donax

Alkaloids of Thalictrum. XXXII. Isolation and Identification of Alkaloids From Thalictrum revolutum DC. Fruit

Alkaloids of Thalictrum. XXXII. Isolation and Identification of Alkaloids From Thalictrum revolutum DC. Fruit

Thin Layer Chromatography Combined with Color Spot Test Reactions for Preliminary Identification of Papaveraceous Alkaloids

Abstract Thin layer chromatography (TLC) and color spot test reagents (CSTR) were used consecutively to identify isolated papaveraceous alkaloids. Fourteen alkaloid standards were spotted on fluorescent and nonfluorescent silica gel G TLC plates and developed with 3 solvent systems. Spots were evaluated by appearance under daylight, appearance under short wavelength ultraviolet light, color developed by 2 spray reagents, and migration. Eighteen crystalline alkaloids were tested on spot plates with Frohde, Ferreira, Marquis plus oxidant, Mecke, and ferric oxidizing reagents. Colors developed were evaluated as a function of time. Color names were standardized by comparison with color plates from the Centroid Color Charts issued by the Intersociety Color Council of the National Bureau of Standards. TLC separation followed by CSTR is a useful analytical procedure for preliminary identification of alkaloids extracted from tissues of papaveraceae.

Isolation and Chemistry of the Alkaloids from Plants of the Papaveraceae. LXXIII1: Isolation and Identification of Alkaloids from Corydalis lutea (L.) DC.2

Isolation and Chemistry of the Alkaloids from Plants of the Papaveraceae. LXXIII¹: Isolation and Identification of Alkaloids from Corydalis lutea (L.) DC.²

Identification of alkaloids in crude extracts by mass-analyzed ion kinetic energy spectrometry

Identification of alkaloids in crude extracts by mass-analyzed ion kinetic energy spectrometry

N.M.R. Spectral Studies of Some Quinolone Derivatives, Part IV.1The Unique Effect of the 8-Substituent Upon the Degree of Hydrogen Bonding and a Study of Some Model Compounds for the Identification of Alkaloids

Abstract The chemical shifts of the NH protons for a series of substituted 2-quinolone derivatives bearing no 4-methyl substituent have been studied. The 8-methyl substituent almost exclusively causes the Inhibition of hydrogen bonding. Some methoxy substituted 2-quinolone derivatives have also been studied as model compounds for the identification of quinolone alkaloids.

Tissue culture of Papaver bracteatum. II. Growth and lakaloid production of the cultured cells of Papaver bracteatum.

Callus cells were derived from seedlings of Papaver bracteatum Lindl. and maintained on agar media for more than 2 years. Liquid cultures have been established and maintained for more than 2 years and successful growth of considerable amounts of callus cells in suspension culture has been accomplished. The callus cells thus obtained were harvested, lyophilized and alkaloids were extracted. Alkaloids were also extracted from culture filtrates. Separation and identification of alkaloids was accomplished by TLC and GLC. The main alkaloids produced in the callus cells were identified by gas chromatographic-mass spectrometry as L-stylopine and protopine. The production of thebaine by the cells was almost negligible in the cultural condition used here.

Identification of alkaloids; the condensation products of biogenic amines with formaldehyde, enzymatically formed from 5-methyltetrahydrofolic acid.

The use of thin-layer chromatography has demonstrated that incubations of indoleamines with 5-methyl[14-C]tetrahydrofolic acid and an enzyme previously described as an N-methyltransferase, do not yield Nw, N1, or O-methylated products. Further elucidation by thin-layer chromatography, gas chromatography, mass spectrometry and selected ion monitoring enabled us to identify the reaction products as tetrahydroisoquinolines and tetrahydro-beta-carbolines in mixtures incubated respectively with catecholamines and indoleamines in the presence of 5-methyl[14-C]tetrahydrofolic acid and enzyme. The alkaloids have been shown to originate from a spontaneous condensation of the corresponding amines with formaldehyde, this latter being formed in the first stage of the reaction by enzymatic conversion from 5-methyltetrahydrofolic acid.

Isolation and chemistry of papaver alkaloids. 58. Isolation and identification of alkaloids from Papaver urbanianum Fedde

Aus der Gattung Papaver urbanianum Fed de (Papaveraceae: Sektion Miltantha Bernh.) wurde ein Alkaloidgemisch (0,30 %) isoliert. Präparative Chromatographie ergab die Alkaloide 6a,7–Didehydroaporhein, (+)–Aporhein, (–)–Mecambrin, (–)–Armepavin, (–)–N–Norarmepavin, Muramin, N–Methyl–6,7–dimethoxytetrahydroisochinolon–(1) und Palmatin. Diinnschichtchromatographisch wurde die Gegenwart der Alkaloide Protopin und Papaverrubin B nachgewiesen. Die Alkaloide (–)–N–Norarmepavin und N–Methyl–6,7–dimethoxytetrahydroisochinolon–(1) sind in den Arten der Familie Papaveraceae bisher nicht gefunden worden. Die gewonnenen Ergebnisse ergänzen die hinsichtlich der Zureihung der Arten zur Sektion Miltantha Bernh. gezogenen chemotaxonomischen Schlüsse.

Cactus Alkaloids XVI: Isolation and Identification of Alkaloids in Coryphantha ramillosa

The cactus genus Coryphantha has been reported to contain certain β-phenethylamine alkaloids. In this investigation, a Texas species, C. ramillosa Cutak, yielded five alkaloids which were isolated chromatographically and crystallized as their hydro-chloride salts. The isolated compounds were identified as N-methyl-4-methoxy-β-phenethylamine hydrochloride, hordenine hydrochloride, N-methyltyramine hydrochloride, synephrine hydrochloride, and β-O-methylsynephrine hydrochloride, all of which have been previously identified in other Coryphantha species.

Separation and identification of alkaloids by paper electrophoresis and its application in medico-legal cases.

Separation and identification of alkaloids by paper electrophoresis and its application in medico-legal cases.

The Extraction of Alkaloids from milligram quantities of Plant Material

A method is described for the extraction, purification and identification of alkaloids in milligram quantities of plant material

An Efficient Method for the Separation and Identification of Alkaloids in Biological Material.

An Efficient Method for the Separation and Identification of Alkaloids in Biological Material.

Note on the Identification of Alkaloids by Paper Chromatography

The alkaloids selected were atropine, cocaine, codeine, morphine, dionine, dilaudid (dihydromorphinone), heroin, strychnine, ineperidine and papaverine. After the alkaloids (100 pig. in a 2.5% solution of appropriat.e solvent) had been applied at the bottom of rectangular sheets of filter paper, they were chromatographed in a container made from a conventional aquarium covered with a heavy glass plate. Since variations � � �

Identification of Alkaloids and Other Basic Drugs by Paper Partition Chromatography

Identification of Alkaloids and Other Basic Drugs by Paper Partition Chromatography

The Identification of Alkaloids by Precipitation

The Identification of Alkaloids by Precipitation

The Polariscope as an Aid in the Identification of Alkaloids

The Polariscope as an Aid in the Identification of Alkaloids

Notes on the identification of alkaloids and other crystalline bodies by the aid of the microscope

Notes on the identification of alkaloids and other crystalline bodies by the aid of the microscope