Enzymic synthesis of ethanolamine plasmalogens from l-14C-hexadecanol in cell-free systems from Ehrlich ascites and Freputial gland tumors of mice is documented. Identiiication of the ethanolamine plasmalogens is based on the preparation and chromatographic behavior of a number of chemical derivatives that take into account all three positions on the glycerol moiety. 14C-Derivatives isolated fr...

The chemistry of the 5,7-dihydro-6H-pyrrolo[2,3-d]pyrimidin-6-one (1,3-diazaoxindole) compound family, possessing a drug-like scaffold, is unexplored. In this study, the alkylation reactions of N(7)-unsubstituted 5-isopropyl-1,3-diazaoxindoles bearing various substituents at the C(2) position have been investigated. The starting compounds were synthesized from the C(5)-unsubstituted parent comp...

A series of novel xylitan derivatives derived from xylitol were synthesized using operationally simple procedures. A xylitan acetonide was the key intermediate used to prepare benzoate, arylsulfonate esters and 1,2,3-triazole derivatives of xylitan. These compounds were evaluated for their in vitro anti-Trypanosoma cruzi activity against trypomastigote and amastigote forms of the parasite in T....

0-Alkyldihydroxyacetone-P and 0-alkyldihydroxyacetone were identified as intermediates in the biosynthesis of Oalkyl-linked lipids. The substrates for the initial reaction are dihydroxyacetone-P and fatty alcohols, and the cofactor requirements are coenzyme A, ATP, and Mg++. The enzyme complex that carries out this reaction was found in microsomes of preputial gland tumors. The keto-intermediat...

The D-glucose derived aziridine carboxylate 5 was obtained from (E)-ethyl-6-bromo-1,2-O-isopropylidene-3-O-benzyl-5-deoxy-alpha-D-xylo-5-eno-heptofuranuronate 4 through conjugate addition of benzylamine and in situ intramolecular nucleophilic expulsion of bromine. The regioselective aziridine ring-opening, using water as a nucleophile, resulted in the alpha-hydroxy-beta-aminoester 6, which was ...

The sodium salts of some hetaryls of the quinoxalin-2-ones 2-4, phthalazine-1,4-dione 5, phthalazin-1-one 6, and pyridazin-6-ones 7 and 8 were alkylated with (+/-) 2,3-O-isopropylidene-1-O-(4-toluenesulfonyl)glycerol (1) to give the respective tetraseco-nucleosides 9-15. Their deisopropylidenation with 70% acetic acid in water gave the corresponding 2,3-dihydroxyprop-1-yl hetaryls 16-22. Compou...