Zobrazeno 1 - 10
of 172
pro vyhledávání: '"Léo Marion"'
Autor:
Léo Marion, Richard H. F. Manske
Publikováno v:
Canadian journal of research. 24
The base obtained by hydrolysis of the chief alkaloid present in Delphinium Brownii Rydb. is shown to be identical with lycoctonine by comparison with an authentic sample of the latter. The perchlorate, picrate, and methiodide of lycoctonine from bot
Autor:
Y. Tsuda, Léo Marion
Publikováno v:
Canadian Journal of Chemistry. 41:1919-1923
The root of Eupatorium maculatum L. has been examined and found to contain at least four alkaloids. The major base was found to be echinatine, while the second one in importance has been identified as the non-esterified trachelanthamidine. The remain
Publikováno v:
Canadian Journal of Chemistry. 31:387-390
An investigation of the basic components of Lupinuswyethii S. Wats. has revealed the presence of at least four alkaloids, three of which, i.e., l-sparteine, d-lupanine, and hydroxylupanine, are known. The fourth has not been found in sufficient quant
Autor:
Robert E. Gilman, Léo Marion
Publikováno v:
Canadian Journal of Chemistry. 42:2700-2704
The alkaloid indaconitine has been converted into delphinine by replacement of a secondary hydroxyl by hydrogen and substitution of an imino-methyl for the imino-ethyl group originally present. This correlation rigorously establishes the structure of
Publikováno v:
Canadian Journal of Chemistry. 37:1996-2006
The structures of isolycoctonine and hydroxylycoctonine salts have been shown to be VII and X respectively. These structures and the δ-lactone character of the products of lead tetraacetate cleavage of hydroxylycoctonam are in harmony with structure
Publikováno v:
Phytochemistry. 1:209-213
The amino-acids omithine and proime have been shown to serve as precursors of the alkaloid stachydrine in the mature 5 1 2 -6 month old alfalfa plant. Degradation of the alkaloid obtained from experiments with dl -ornithine-2-14C has shown that no ra
Publikováno v:
Tetrahedron Letters. 1:1-5
Publikováno v:
Canadian Journal of Chemistry. 44:13-22
Galinovsky observed that O-tosyllupinine (II) readily isomerized to a quaternary tosylate. Without rigorous proof he assigned to this a monomeric azetidinium salt structure. A study of the infrared and nuclear magnetic resonance spectra and molecular
Publikováno v:
Journal of the American Chemical Society. 73:305-308
Publikováno v:
Canadian Journal of Chemistry. 29:22-29
The species of Lupinus under investigation has been found to contain five alkaloids: l-α-isosparteine, d-α-isolupanine, d-thermopsine, l-sparteine and d-lupanine. The first three had not heretofore been reported as occurring in nature. Both d-α-is