Nine new phragmalin-type limonoids, heytrijumalins A-I (1-9), together with the known 15-acetyltrichagmalin E (10) were isolated from the branches and leaves of Heynea trijuga. The structures of these new compounds were elucidated on the basis of extensive spectroscopic analysis. Compounds 6 and 10
During the course of searching for structurally interesting and bioactive compounds, a further chemical investigation of the leaves of Heynea trijuga Roxburgh was performed, which led to the isolation of a new ergostane derivative, named 3β, 4β, 20S-trihydroxyergosta-5,