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Two New Tetracyclic Triterpenoids and Other Constituents from Aster Ageratoides var. Oophyllus
Authors:Fu‐Lin Yan  Su‐Mei Yao  Yao Zhou
Institution:1. College of Pharmacy, Xinxiang Medical University, Xinxiang, 453003, P. R. China;2. Base Medical College, Henan University, Kaifeng, 475001, P. R. China
Abstract:Two new tetracyclic triterpenoids shiona‐19(E),21‐dien‐3β‐ol ( 1 ), and shiona‐22(29)‐en‐3β,21‐diol ( 2 ), together with four known compounds shiona‐21‐en‐3β‐ol ( 3 ), friedelinol ( 4 ), β‐sitosterol ( 5 ), and (24R)‐stigmast‐7,22(E)‐dien‐3a‐ol ( 6 ) were isolated from Aster ageratoides var. oophyllus. The structures of two new compounds were established on the basis of IR, MS, 1H, 13C and 2D NMR spectroscopic methods.
Keywords:Aster ageratoides var oophyllus  Tetracyclic triterpenoid
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