ABSTRACT

P. arboreum. TRITERPENOIDS: 2,3-seco-24-nor-12-ursen-2,3,28-trioic acid, 4-oxo-3,24-dinor-2,3secours-12-ene-2,28-dioic acid, 3-oxo-24-norurs-12-en-28-oic acid, 2α,3α,23-trihydroxy12-oleanen-28-oic acid.