By C.R.A. Godfrey
Bargains an intensive evaluation of the $64000 agricultural functions of either ordinary items and artificial compounds derived from typical items, proposing specified info at the isolation, structural reviews, organic job and toxicology of those compounds. The increasing zone of insecticidal usual items is highlighted.
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Additional info for Agrochemicals from Natural Products (Books in Soils, Plants, and the Environment)
Surangin B was also shown to be insecticidal and confirmed the importance of the acetoxy group [190, 1911. 05 pg/ml 11911. Useful synthesis of these coumarins are outlined in Crombie's review [1901. X. ACETOGENINS Using lethality to brine shrimp for activity-directed fractionation, asimisin, a trihydroxy-bis-tetrahydrofuranfatty acid y-lactone (Figure 0 94 Figure 19 Insecticidal coumarins. 95 ADDOR 42 20) was isolated from an extract of the bark of the pawpaw tree Asimina triloba Dunal. (Annonaceae) 11931.
All four compounds produced the same level of growth inhibition whether the tests were conductedin a light/dark or a totally dark regimen171. The growth inhibition resulted from an antifeedant responsethat the compounds elicited equally. Dark “toxicity” has been observed for other furanocoumarins [71. B. Mostof the biological evaluation for these compounds has been directed at a variety of microorganisms rather than toward insects. Many of the plant-produced biologically active acetylenic compounds do not require photoactivation.
Because of concerns over the effects on nontarget organisms, the suitability of using a-T as a mosquito larvacide has been questioned ; the Arnason group presents a more optimistic outlook . 38 ADDOR D. , 5,5”-dimethylterthienyl, to be active in vitro to larvae of the nematode Heferoderu rosfochiensis . This was also among a number of synthesized analogs prepared by the Arnason group, but it proved much less active than terthienyl against the mosquito Aedes utropulpus and the brine shrimp (Arterniu salina) 11771.
Agrochemicals from Natural Products (Books in Soils, Plants, and the Environment) by C.R.A. Godfrey