Results 151 to 160 of about 7,538 (194)
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Determination of the Ester Composition of Neopentyl Polyol Ester Lubricants
A S L E Transactions, 1969Because of the increasing use of the neopentyl polyol esters as lubricants, an analytical method capable of giving detailed information concerning the composition of these complex ester mixtures is desirable. Methods of gas-liquid chromatography and thin-layer chromatography have been applied in the successful development if such an analytical method ...
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Surfactants from fatty esters of polyalkoxylated polyol glycosides
Journal of the American Oil Chemists' Society, 1973AbstractThe glycoside raw materials used to prepare the surfactants were mixtures produced directly from low cost starch and the polyols by transglycosidation. After alkoxylation with ethylene oxide and propylene oxide, the glycosides were transesterified by the methyl esters of various fatty acids to yield the final products.
C. A. Wilham +3 more
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Borate esters of polyols: Occurrence, applications and implications
Inorganica Chimica Acta, 2021Abstract Boric acid (or inorganic borate) and polyols with vicinal hydroxyl groups are starting materials for the synthesis of borate esters. Boron biomolecules are examples of this type of borate esters, which are associated with metabolism of plants and bacteria.
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Stereochemistry of nitrate esters of polyols
2011The solution infrared spectra and proton magnetic resonance (PMR) spectra of several series of polyol nitrates have been examined in order to assess the potential of these two spectroscopic methods for the study of the stereochemistry of nitrate esters in solution.
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Preparation of fatty acid esters of polyol glucosides
Journal of the American Oil Chemists' Society, 1978AbstractStarch is readily converted into glucosides by heating with a polyol, such as propylene glycol or glycerol, for a short time at 125 C in the presence of a catalytic amount of sulfuric acid. The product resulting from the reaction of 3 or more moles of polyol per anhydroglucose unit consists mostly of polyol monoglucosides, which are quite ...
R. O. Feuge, J. L. White, Mona Brown
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Sesquiterpene polyol esters from Tripterygium wilfordii var. Regelii
Phytochemistry, 1991Six new dihydroagarofuran derivatives were isolated from Tripterygium wilfordii and their structures established by chemical and spectroscopic means.
Yoshihisa Takaishi +5 more
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Skin irritant effects of esters of phorbol and related polyols
Archives of Toxicology, 1980The skin irritant potencies of several naturally occurring and semi-synthetic polyfunctional esters based on the tigliane hydrocarbon skeleton were studied using a mouse ear irritancy assay. The compounds used were esters of 12-deoxyphorbol, 12-deoxy-16-hydroxyphorbol, and phorbol. Observations were also made on the time interval between application of
R J, Schmidt, F J, Evans
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Bioactive sesquiterpene polyol esters from the leaves of Tripterygium wilfordii
Fitoterapia, 2014Tripterygium wilfordii, a member of Celastraceae family, has been used as a traditional plant insecticide and a medicinal plant. Phytochemical investigation of the leaves of T. wilfordii has resulted in the isolation of eight sesquiterpene polyol esters triptersinines M-T (1-8) and one sesquiterpene pyridine alkaloid (9).
Chao, Wang +6 more
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Sesquiterpene polyol esters from Euonymus phellomana Loes.
Die Pharmazie, 2002Three new (1-3) and six known (4-9) beta-dihydroagarofuran sesquiterpene polyol esters were isolated from a methanol extract of the seed oil of Euonymus phellomana Loes. and their structures were established on the basis of spectral analysis, including 2D-NMR spectroscopy.
H, Wang, L, Yang, X, Tian, Y Z, Chen
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Silylacetic Esters: Enolate Reactions and Polyol Preparation
The Journal of Organic Chemistry, 1998Mary M., Mader, Jonathan C., Edel
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