ISOLATION AND STRUCTURE ELUCIDATION OF OBTUSILININ, A NEW TRITERPENOID AND 27-PARA-Z-COUMAROYLOXYURSOLIC ACID FROM THE LEAVES OF PLUMERIA-OBTUSA

From the fresh spring leaves of Plumeria obtusa a new triterpenoid, obtusilinin, has been isolated along with 27-p-Z-coumaroyloxyursolic acid reported earlier. Their structures have been established through chemical and spectroscopic methods as 3-beta-hydroxy-27-p-Z-coumaroyloxyolea-12-en-28-oic acid and 3-beta-hydroxy-27-p-Z-coumaroyloxyurs-12-en-28-oic acid.

SABIRA BEGUM ,BINA S SIDDIQUI ,SALIMUZZAMAN SIDDIQUI ,AKHTAR NAEED ,