Unclassified Alkaloids and Alkaloid-containing Plants

A review on sulphur-containing alkaloids has appeared,as has one on the Lauraceae alkaloids,and the third (and last ) volume of Glasby s encyclopaedic series. The toxicity of alkaloids with respect to their structure and geographical source has been reviewed, and the generalization that has been made from this ecogeographic study is that tropical plants produce more toxic alkaloids than do those from temperate regions.  

A review of isoxazole compounds (covering the period 1963—1977) discusses their synthesis, reactivity, and physiological and physicochemical properties naturally occurring and biologically active isoxazoles are included.27 Some Saudi Arabian plants have been screened for alkaloids.28 Aristolochic acids I (28 R = H) and D (28 R = OH), which are cytotoxic to mammalian systems, are also cytotoxic to non-tumorous plant cells.29 

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