LIMONOIDS FROM THE FIJIAN MEDICINAL PLANT DABI (XYLOCARPUS)

Two new limonoids, xyloccensin I (1) and xyloccensin J (2), have been isolated from the Fijian medicinal plants Xylocarpus granatum and X. moluccensis. The structures of these were proposed after extensive 2D NMR analyses. All proton and carbon resonances of 1 and 2 have been assigned. Corrections are reported for the NMR data of important known compounds related to 1 and 2 which include xyloccensin F (3) and swietenine (4). Unfortunately, compounds 1 and 2 failed to show positive bioactivity in a variety of primary screens.