A method is given for partially purifying the phenolic components of Cannabis sativa resin and for separating these components by means of paper chromatography. The application of this method for the preparation of pure cannabinol and tetrahydrocannabinol is described.
The absorption spectra of 38 cardiac glycosides, aglycones, and aglycone derivatives, have been determined in sulfuric acid. The use of these spectra may assist in differentiating between members of the A, B, and C series of digitalis glycosides and aglycones.
In vitro antibacterial activity of nine essential oils and one fixed oil obtained from Indian medicinal plants was determined using a filter paper disk method. The oils were tested against various Gram-positive and Gram-negative organisms. All the oils tested were found to be effective against one or more test organisms.
A crystalline mixture of saponins was isolated from strawberry clover (Trifolium fragiferum). Upon hydrolysis with dilute acid this product yielded the soyasapogenols B and C, a very small quantity of unidentified sapogenin, and several sugars.
General methods for the preparation of 1-alkyl-2,5-piperazinediones were found in the cyclization of N-alkylglycylglycines and the alkylation of the sodium salt of 1-acetyl-2,5-piperazinedione. 1-Methyl-2,5-piperazinedione showed significant antispasmodic activity.
Growth and morphology were compared on plants furnished six levels of nitrate and three of ammonia in water culture. The production of dry weight with ammonia was significantly greater than with nitrate. Ratios of shoot/root and leaf/stem indicated that use of the nitrogen was very different at low vs. high levels, particularly with ammonia nitrogen.
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