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Epoxidation of a conjugated linoleic acid isomer
Epoxidation of methyl (92,11E)-octadecadienoate (1) with various epoxidizing agents viz. m-chloroperoxybenzoic acid, dimethyl dioxirane, methyltrioxorhenium/hydrogen peroxide, potassium…
Expanding the Field of Phosphorus-Containing Fatty Acid Derivatives: Synthesis of 1,2-Oxaphospholene Derivatives and Alkenyl Phosphonates from α-Keto Allenes
The first successful preparation of phosphorus-containing heterocyclic fatty acid derivatives is described. Reaction of the C18 α-keto allene 1 and the C18 α-keto chloroallene 2 with trimethyl…
Novel halo-oxo-allenic fatty ester derivatives from epoxidized methyl santalbate (methyl trans-11-octadecen-9-ynoate).
Ultrasound assisted synthesis of pyrazole fatty ester derivatives from a key C18 keto-allenic ester
Cyclodehydration reactions of methyl 9,10-; 10,12-; and 9,12-dioxostearates with 1,2-diaminoethane under ultrasonic irradiation
The structures of these novel six- Membered (4), seven-membered (6), and eight-members (5) N-heterocyclic fatty ester derivatives were confirmed by a combination of infrared, nuclear magnetic resonance spectroscopic and mass spectral analyses.
Lipase-catalyzed hydrolysis of TG containing acetylenic FA
The results reconfirmed the observation that AY-30 and CCL were able to distinguish the slight differences in the molecular structure (position of the acetylenic bond and chain length) of the acyl groups in the TG during the hydrolysis of such TG substrates.
Synthesis of novel tri- and tetrasubstituted C18 furan fatty esters
The presence of a fluorine atom in the furan derivatives 4, 7, and 8 was readily characterized by the appearance of doublets for carbon nuclei, which were coupled to the fluorine atoms in the 13C NMR spectra.
Synthesis and a study of the 13C NMR spectroscopic properties of positional isomers of some C18 acetylenic thia fatty esters
The carbon magnetic resonance spectra of four positional acetylenic thia fatty acid methyl ester isomers have been recorded to investigate the effect of the sulfur atom on the chemical shifts of the…
Novel lipidic enaminones from a C18 keto-allenic ester
The E- and Z-configuration of the enaminone system of these novel lipid derivatives was confirmed by infrared and nuclear magnetic resonance spectroscopic techniques and primary amines furnished Z-enaminones, while secondary amines gave E-enaminationones.