A new noroleanane named as karounitriol (1), together with four known compounds, 7-oxodihydrokarounidiol (2), isokarounidiol (3), karounidiol (4), and stigmasta-7,22-dien-3-ol were isolated from the seeds of Trichosanthes kirilowii Maxim. Structure of the new compound was elucidated as 3α,7β,29trihydroxy-D:C-friedo-olean-8-ene on the basis of spectroscopic methods including extensive 1D NMR (1 H, 13 C), 2D NMR (1 H-1 H COSY, DEPT, HMQC, HMBC, and NOESY), IR, and MS studies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.