Absolute Configuration of Alkaloids from through Experimental and Computational Approaches.

The structure elucidation of three new alkaloids named isoformosaninol (), formosaninol (), and longiflorine (), isolated from the leaves of var. (Miq.) Ridsdale, along with their biosynthetic pathways are discussed. Their absolute structures were determined through a combination of physical data interpretation and quantum chemical calculations using the time-dependent density functional theory (TDDFT) method.