Thesis (Ph.D.)--Boston University / Three skipped unsaturated fatty acids, 8,11-octadecadienoic acid, 10,13-octadecadienoic acid and 11,14-octadecadienoic acid have been synthesized via skipped acetylenic intermediates. Coupling an w-chloroacetylenic Grignard derivative I with a propargylic bromide II in tetrahydrofuran in the presence of cuprous chloride catalyst yielded a 1-chloroheptadecadiyne III, which was reduced stereospecifically and selectively to the di-cis-1-chloroheptadecadiene IV by two treatments with diisobutylaluminum hydride. The diene IV was converted to the Grignard reagent which upon carbonation and acidification gave the octadecadienoic acid V[TRUNCATED]

published_or_final_version / abstract / toc / Chemistry / Master / Master of Philosophy

Phytic acid, as myoinositol hexaphosphate, (mgm/100gm) found in each product was; 2860 in a glanded flour, 4290 in a glandless flour, 3350 in an air-classified glandless flour, and 2490 in toasted seed kernels. The glandless flour was significantly higher in phytic. acid than the glanded flour (5% level), and than the seed kernels (1% level). The glanded flour was the only product that did not exhibit phytase activity. Inorganic phosphorous released (mgm x 10⁻³, per 50 mgm of product); were: 63.4 for the air-classified glandless flour, 41.4 for the kernels, 38.7 for the glandless flour, and less than 1.0 for the glanded flour. The amount of inorganic phosphate released by the glandless air-classified flour during enzyme activity was significantly higher at the 1% level than the amounts released by either the glandless flour or the toasted kernels. No other significant differences were found at the 5% level between the amounts of inorganic phosphorous released by the other products demonstrating enzyme activity. The amounts of these cottonseed products recommended for use in a recipe formulations are not enough for their phytic acid content to be of nutritional significance. The amount of phytic acid ingested with the kernels when they are used as a snack food may be cause for some concern. / Graduation date: 1973

Thesis (Ph.D.)--Boston University / Cassaic acid (I) is one of the hydrolysis products from cassaine, an alkaloid found in the bark of Erythrophleum guineense. Earlier investigators formulated cassaic acid as I-, with the hydroxyl and ketone groups placed provisionally at positions 2 and 9, respectively. The present work provides experimental evidence proving the correctness of these two assignments. [TRUNCATED]

No description available.

Typewritten copy / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Thesis (Ph.D.)--University of Adelaide,

No description available.

No description available.

Graduation date: 1997

Thesis (Ph. D.)--University of Chicago. / Includes bibliographical references. Also available on the Internet.