New tetranortriterpenoids, langsatides A and B from the seeds of Lansium domesticum Corr. (Meliaceae)

Publication date: February 2018 Source:Phytochemistry Letters, Volume 23 Author(s): Rudiyansyah, Andi Hairil Alimuddin, Masriani, Rini Muharini, Peter Proksch Seven tetranortriterpenoids including two new constituents, langsatides A (1) and B (2) together with five known compounds, dukunolides A (3), B (4), C (5), D (6), and F (8) were obtained from the seeds of Lansium domesticum. The structures of 1 and 2 were elucidated on the basis of spectroscopic analyses including 1D and 2D NMR, HRESIMS, and [α]D values, as well as by comparison with literature data. The anti-TB and antibacterial activities and cytotoxicities of all isolated compounds were also evaluated. Graphical abstract

Source: Phytochemistry Letters - December 16, 2017 Category: Chemistry Source Type: research