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Seventeen steroids from the pith of Tetrapanax papyriferus
Jing-Lan Xu1,2, Li-Hua Gu1, Zheng-Tao Wang1
1a Key Laboratory of Standardization of Chinese Medicines, Ministry of Education , Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine , Shanghai 201203 , China.
Journal of Asian Natural Products Research
|July 19, 2016
Abstract:
Two new steroidal ketones (1, 2), together with 10 known steroids (3-12) and five known steroidal saponins (13-17), have been obtained from the pitch of Tetrapanax papyrierus. The structures of 1 and 2 were elucidated as 3β-hydroxystigmast-8, 22-diene-7,11-dione and 3β-hydroxystigmast-8-ene-7,11-dione by IR, HR-ESI-MS, 1D and 2D NMR techniques. Except for 4, 14, 15, 16, 13 compounds reported in this paper were isolated from Tetrapanax papyriferus for the first time.