WITHDRAWN: Eight new C21 steroidal glycosides from Cynanchum wilfordii.
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School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
Wen-Juan
WJ
Xiang
Hai-Gang
HG
Liu
Xia-Chang
XC
Wang
Hao
H
Gan
Lei
L
Ma
Li-Hong
LH
Hu