SESQUITERPENES, TRITERPENOIDS, LIMONOIDS AND FLAVONOIDS OF CEDRELA-ODORATA GRAFT AND SPECULATIONS ON THE INDUCED RESISTANCE AGAINST HYPSIPYLA-GRANDELLA

From the stem of Cedrela odorata grafted on Toona ciliata var. austral is were isolated calamenene, cycloeucalenol, sitosterol, stigmasterol, campesterol, gedunin, 7-deacetylgedunin, 7-deacetoxy-7-oxogedunin, me thylangolensate, febrifugin, azadiradione, 20,21,22,23-tetrahydro-23-o xoazadirone, 3 beta-deacetylfissinolide and, catechin, together with t he new limonoid 1 alpha-methoxy-1,2-dihydrogedunin and the new cycloar tane 3 beta-O-beta-D-glucopyranosylcycloeucalenol. The limonoids were of little value to clarify the basis of the induced resistance in the graft against Hypispyla grandella. The cycloartanes and catechin could have been translocated from Toona stock to the Cedrela graft. Copyrig ht (C) 1987 Elsevier Science Ltd.