Results 191 to 200 of about 4,127 (238)
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Malvalic Acid and its Structure [PDF]

open access: possibleNature, 1957
SOME of the properties of a biologically active C18 fatty acid isolated from Malva verticillata and M. parviflora have been reported1. The name ‘malvalic’ acid is now proposed for this acid, which was previously referred to as “Halphen acid” because it gave rise to the Halphen colour test.
J. J. Macfarlane   +2 more
openaire   +2 more sources

Comparative morphology and ontogenetic patterns of Bdallophytum species (Cytinaceae, Malvales): insight into the biology of an endoparasitic genus

Botany, 2021
Cytinaceae are root endoparasitic plants with only three genera. Their biology is largely unknown, and most knowledge of the family is based on the Old World genus Cytinus. Here, we studied all three species of the New World Bdallophytum from Mexico.
Sandra Rios‐Carrasco   +1 more
semanticscholar   +1 more source

Some reactions of sterculic and malvalic acids. A new source of malvalic acid

Canadian Journal of Biochemistry, 1970
Oxidation of sterculic acid by aqueous alkaline permanganate gave 9,11-dioxononadecanoic acid. Oxidation of sterculic acid by peracetic acid gave a mixture of 9-oxononadec-10-enoic and 11-oxononadec-9-enoic acids. Acetolysis of malvalic acid gave a mixture of 8-hydroxy-9-methylene-heptadecanoic and 9-hydroxy-8-methylene-heptadecanoic acids.
C Y Hopkins, M W Roomi
openaire   +2 more sources

Syntheses of labelled methyl malvalate

Journal of the Chemical Society D: Chemical Communications, 1970
Practical syntheses of homogeneous methyl malvalate, adaptable for inserting radiocarbon at positions 1, 9, 10, and ring CH2, are described.
R. Yanase   +4 more
openaire   +2 more sources

Separation of methyl malvalate from methyl sterculate

Journal of the American Oil Chemists' Society, 1981
AbstractMethyl malvalate and sterculate, labile and differing by a single methylene, are difficult to separate completely. They have been separated in our laboratory by high vacuum spinning band distillation. Each of these fatty esters has been prepared completely free of the other.
P. M. Loveland   +2 more
openaire   +2 more sources

Syntheses of C-14 labeled methyl malvalates

Chemistry and Physics of Lipids, 1971
Abstract Malvalic acid, the principle cyclopropene acid in cottonseed oil, has been synthesized with carbon-14 at the 1-position, at the ring methano-position, and at the 10-position. A method for reaching malvalic-9- 14 C acid has also been worked out.
Kenneth W. Pober   +3 more
openaire   +2 more sources

Introduction to Malvales

2003
The close relationship among the families of the “core” Malvales, Malvaceae, Bombacaceae and Tiliaceae has been recognised since the beginnings of scientific plant systematics. A.P. De Candolle (1824) in his “Prodromus” treated them in direct sequence, and Elaeocarpaceae and Chlaenaceae followed immediately.
M. W. Chase, Klaus Kubitzki
openaire   +2 more sources

New Ring Opening Oxidation of Methyl Sterculate and Malvalate

Chemistry Letters, 1990
Abstract Air oxidation of cyclopropane fatty acid methyl esters, methyl sterculate and malvalate, resulted in the cleavage of cyclopropene ring, respectively, to afford a pair of conjugated enones containing a terminal methylene group.
Yasuto Uchio   +3 more
openaire   +2 more sources

Mass spectra of methyl sterculate and malvalate and 1,2-dialkylcyclopropenes

Chemistry and Physics of Lipids, 1974
Abstract The mass spectra of 1,2-dipropyl-, 1,2-dipentyl-, 1,2-dihexyl-, 1,2-diheptyl-, and 1,2-dioctyl-cyclopropene, methyl malvalate, methyl sterculate, malvalyl alcohol, 1,2-dipropyl-, 1,2-dipentyl-, and 1,2-dihexylcyclopropene-3-carboxylic acid, and methyl-9,10-(carbethoxymethano)-9-octadecenoate are presented.
D. J. Lee   +4 more
openaire   +3 more sources

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