A New Dammarane Triterpenoid Compound Isolated From Ixora Finlaysoniana

The air-dried leaves of Ixora finlaysoniana Wall. ex. Don ( family Rubiaceae) afforded a new dammarane triterpenoid named: 17β-dammara-1-one -20 ene-3β-3', 8'-dimethyloctanoate (1) together with two known saturated fatty acids capric (2) and palmitic (3) from the chloroform extract as well as three phenolic acids: gallic (4), caffeic (5), chlorogenic (6), six flavonols: Kaempferol 3-O--D-arabinopyranoside (7), afzelin (8), Kaempferol-3-O--glucopyranosyl-7-O-glucuropyranoside(9), Kaempferol-3-O--Lrhamnopyranosyl (1'''→6'')(4''-trans-p-coumaroyl)-D-glucopyranoside-7-O--L-rhamnopyranoside (10), Kaempferol-3-O--L-rhamnopyranosyl(1'''→2'')(4''-trans-p-coumaroyl)-D-arabinopyranosid-7-O--Lrhamnopyranoside (11) and kaempferol (12) in addition to two isoflavones: Biochanin A (13), Biochanin A-7O--D-rutinoside (14) were isolated from methanol extract . All these structures were isolated for the first time from Ixora finlaysoniana leaves and were elucidated by different chromatographic and UV, extensive 1D and 2D NMR spectroscopy and MS.