Six new 4-phenylcoumarins, viz. 7-hydroxy-4,'5-dimethoxy-(5a)-, 5-hydroxy-4',7-dimethoxy-(5b)-, 7,4'-dihydroxy-5-methoxy-(6a)-, 4',5-dihydroxy-7-methoxy-(6b)-, 4'-benzyloxy-7-hydroxy-5-methoxy-(7a)- and 4'-benzyloxy-5-hydroxy-7-methoxy-(7b)-4-phenylcoumarins and two naturally occurring coumarins, 4',5,7-trimethoxy-(10)- and 4'-hydroxy-5,7-dimethoxy-(9)-4- phenylcoumarins, have been synthesised by the Pechmann condensation.