STUDIES ON NATURAL PRODUCTS OF ALBIZIA SP.
AbstractThe bark ofÂ Albizia lebeckioidesÂ andÂ Albizia falcatariaÂ have been examined for their chemical constituents. A. lebeckioides has yielded the steroidal ketone, stigmasta-4,22-dien-3-one, and a triterpene alcohol as the major neutral components.Â A. falcatariaÂ has yielded a similar triterpeneÂ and fatty ester as its major constituents. The toxicity of the compounds was evaluated in bioassay against termites. The results showed that lupenone and stigmastadienone were toxicÂ ioNeotermes dalbergiaeÂ species. In contrast these compounds were less toxic to Cryptotermes cynocephalus species. Key words: Insecticidal plants / Albizia lebeckioides I Albizia falcataria I Bark / Extracts / Chemical constituents / Toxicity / Termites
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