New manglanostenoic acids from the stem bark of mangifera indica var. ‘‘fazli’’

الملخص EN

Phytochemical investigation of the ethanolic extract of stem bark of Mangifera indica variety ‘‘Fazli’’ yielded four new lanostene-type triterpenic acids characterised as 3-oxo-lanostcis- 1, 24-diene-27-oic acid (2), 3-oxo-lanost-cis-1, 5, 8, 20 (22)-tetra-ene-27-oic acid (3), 3-oxo-lanost- 1, 7, 20 (22)-triene-13, 14-seco-27-oic acid (4) and 3-oxo-lanosta-cis-1, 5, 24-trien-27-oic acid (5) along with the known compound 3-oxo-lanost-cis-1, 20 (22)-diene-27-oic acid (1).

The structures of these phytoconstituents have been elucidated on the basis of spectral analysis and chemical reactions.