Department of Chemistry, Marathwada University, Aurangabad-131 001 Manuscript received 30 September 1982, revised 3 December 1984, accepted 29 April 1986 Synthesis of a few 1-[7'(3'-methylethyl)-6'-hydroxy-1',2'-benzisoxazolyl]-3-(subs­tituted-phenyl)-propane-1,3-diones is described. By the action of o-phenylenediamine, hydrazine and hydroxylamine on these 1,3-diones, 7-benzodiazepinyl-, 7-pyrazolyl- and 7-isoxazolyl-1,2-benzisoxazoles, respectively were obtained. Antifungal activity of most of these compounds is described.