Two novelquassinoids, javanicolides A and B, and one novelquassinoid glucoside, javanicoside A were isolated from the seeds of Bruceajavanica Merr. (Simaroubaceae), along with four known quassinoids, yadanziolides A and D, and bruceins D and E, and two known quassinoid glucosides, yadanziosides D and L. Their structures were elucidated by the analysis of spectral data and chemical evidence.