Subject(s)
Aflatoxins/analysis , Animal Feed/analysis , Food Contamination/analysis , Mycotoxins/analysis , Animals , Humans , MethodsSubject(s)
Food Contamination/analysis , Mycotoxins/analysis , Data Collection , Quality Control , United KingdomSubject(s)
Antineoplastic Agents , Neoplasms/drug therapy , Antibiotics, Antineoplastic/pharmacology , Antimetabolites, Antineoplastic/pharmacology , Antineoplastic Agents/pharmacology , Antineoplastic Agents, Phytogenic/pharmacology , Busulfan/pharmacology , Chemical Phenomena , Chemistry , Drug Therapy, Combination , Fungi/physiology , Humans , Nitrogen Mustard Compounds/pharmacology , Nitrosourea Compounds/pharmacologyABSTRACT
A study of the degree of water elimination from ions derived from spirostan-3-ols by electron bombardment has shown that the loss is greatest from those ions produced by the 5 beta-spirostan-3 alpha-ols, less from the 5 beta-spirostan-3 beta-ols and the 5 alpha-spirostan-3 alpha-ols, which give losses of the same order of magnitude; and least from the 5 alpha-spirostan-3 beta-ols. The extent of water elimination can be used to help characterise spirostan-3-ols isolated from plant materials.
Subject(s)
Plants/analysis , Sapogenins/analysis , Chemical Phenomena , Chemistry , Isomerism , Mass Spectrometry , WaterABSTRACT
From the leaves of Agave lecheguilla Torrey, two steroidal sapogenin diols have been isolated. Mass spectral, infra-red and nuclear magnetic resonance data of these two compounds showed them to be (25R)-spirost-5-ene-2 alpha, 3 beta-diol (yuccagenin) and (25R)-5 beta-spirostane-3 beta, 6 alpha-diol. The latter is a new compound to which the trivial name ruizgenin has been given.
