REACTIONS OF METHYL-DERIVATIVES OF 2-PENTEN-5-OLIDE, 2-BUTEN-4-OLIDE,AND COUMARIN WITH DICARBOXYLIC ANHYDRIDES AND WITH 3-FORMYLCHROMONES UNDER THE PERKIN SYNTHESIS CONDITIONS

4H-4-Oxo-3-(R-vinylene)chromene derivatives and 3-(R-methylene)phthali de derivatives have been prepared by condensation reactions (R = 2H,5H -2-oxo-5,5-dimethyl-3-R5-4-furyl; 2H-2-oxo-6-dimethyl-3-R5-5,6-dihydro pyran-4-yl; 2H-2-oxo-3-R5-4-chromenyl; R5 = CN, CONH2, CO2C2H5, [GRAPH ICS]. Some of the prepared compounds were tested for a variety of biol ogical activities (for herbicidal, fungicidal, growTh-regulating activ ity, for antifungal activity against human pathogenic dermatophytes an d micromycetes, and also for their possible anti-HIV activity).