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The labdane diterpene solidagenone and four semisynthetic derivatives were assessed for effects on the glucocorticoid-mediated signal transduction. Solidagenone and the derivatives proved to be active with IC[50] values between 1 and 25 μg/mL. All compounds were cytotoxic towards L 1210, BHK and ...

The interfacial activity of polyelectrolytes carrying alkyl side chains of different length has been studied. Potassium salts of poly(maleic acid-co-1-olefins), PA-nK2 with n=12, 14, 16, 18, were synthesized, and the interfacial tension at the aqueous solution/n-octane interface was measured as a...

Enzyme electrophoresis was employed to measure variation within and divergence among three species of Wahlenbergia (W. berteroi, W. fernandeziana, and W. masafuerae) endemic to the Juan Fernandez Islands at gene loci encoding soluble enzymes. Two species, W. berteroi and W. fernandeziana, occur o...