Inhibition of nematode induced root damage by derivatives of methylenecyclopropane acetic acid
摘要:
Methylenecyclopropane acetic acid (MCPA), an inhibitor of fatty acid oxidation, and several derivatives were shown to be potent inhibitors of root galling induced by the nematode pest Meloidogyne incognita. (C) 1997 Elsevier Science Ltd.
Malonate radical cyclisations of methylenecyclopropane derivatives
摘要:
Cyclisations of various methylenecyclopropyl substituted malonate radicals have been studied. Radicals derived from malonates 4 and 9 underwent exclusive 5-exo cyclisation onto the methylenecyclopropane alkene, followed by opening of the resulting cyclopropylmethyl radical, to give methylenecyclohexane products. Radicals derived from malonates 5 and 10 largely gave bicyclo[1.5.0]octane products, in good yields, as a result of 7-endo cyclisation. Cyclisation of the radical derived from malonate 11 gave a bicyclo[1.5.0]nonane derivative in 31% yield, as a result of an 8-endo cyclisation.