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Nat Prod Res
; 27(21): 2033-8, 2013.
Article
in English
| MEDLINE
| ID: mdl-23941615
ABSTRACT
Phytochemical investigation of the aerial parts of Rhododendron lepidotum yielded 8-[2',6'-dimethoxy-4'-(1â³,2â³,3â³-trihydroxy-propyl)-phenyl]-7-hydroxy benzopyranone (1), 3-O-ß-d-glycopyranosyl betulinic amide (2) and 8-hydroxy-7,7'-oxydicoumarin (4) and five known compounds. Among the known molecules, betulinic amide (3) was earlier reported as a semi-synthetic product. The structures of new molecules 1, 2 and 4 were elucidated on the basis of extensive spectroscopic investigations (1D NMR, 2D NMR and mass spectrometry).