A facile synthesis of 3,5-diaryl 1,2,4-selenadiazoles was provided by treatment of aryl selenoamides with p-methylphenyl sulfonyl chloride in chloroform.
A new xanthone, 1,2-dihydro-3,6,8-trihydroxy-1,l-bis (3-methylbut -2-enyl)-5-(l,1-dimcthylprop-2-enyl)-xanthen-2,9-dione (1), has been isolated from the aerial