The chemical constituents of Australian Flindersia species. V. The constituents of Flindersia maculosa Lindl

From the bark of Flindersia maculosa Lindl. were isolated the known alkaloids, kokusaginine and flindersiamine, the new alkaloids, maculine and maculosine, the known coumarin, collinin, and a triterpene, flindissol. Maculine appears to be a methylenedioxydiotamnine. The leaves contained kokusaginine, the new alkaloid, maculosidine, and the new flavone, flindulatin. The structure 6,s-dimethoxydictamnine is proposed for maculosidine, and flindulatin is shown by degradation and synthesis to be 5-hydroxy-3,4',7,8-tetramethoxyflavone (3,4',7,8-tetramethylherbacetin).