Sanjecumins A and B: new limonoids from Sandoricum koetjape.

Two new limonoids, sanjecumins A (1) and B (2), have been isolated from the leaves of Sandoricum koetjape, together with sandoripins A (3) and B (4). Their structures and absolute configurations were elucidated on the basis of NMR and CD data. Sandoripins A (3) and B (4) moderately inhibited nitric oxide production in mouse macrophage-like cell line J774.1 stimulated by lipopolysaccharide.