New sulfureous diketopiperazine from roots of Moringa oleifera

Phytochemical investigation of the roots of Moringa oleifera led to the isolation of a new sulfureous diketopiperazine, 7-epi lasiodipline D (1) together with its diastereomer, lasiodipline D (2), and two other known compounds.Structures of the isolated compounds were elucidated by HRESIMS, NMR, and ECD data.For the first time, sulfureous diketopiperazine derivatives (1-3) were obtained from the roots of M. oleifera.