Triterpenes and triterpene-glycoside from the leaves of Lawsonia inermis.

Nguyen Thi Binh, Pham Thanh Ky, Nguyen Phuong Thao, Chau Van Minh, Nguyen Xuan Cuong, Phan Van Kiem

Abstract


From the leaves of  Lawsonia inermis (syn. L. alba), two triterpenes augustic acid (1) and 1b,2a,3a,19a-tetrahydroxy-12-ursen-28-oic acid (2), and a triterpene-glycoside suavissimoside R1 (3) were isolated by using various chromatoghraphies. Their structures were characterized on the basis of the spectroscopic data (1D-NMR, HSQC, HMBC, ESI-MS) in comparison with the literature. This is the first report of 1 - 3 from Lawsonia species.

Keywords: Lawsonia inermis, Lythraceae, Triterpene.