Hong Quan Duan
Tianjin Medical University
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Publication
Featured researches published by Hong Quan Duan.
Planta Medica | 2010
Wen Zhang; Zhi Yao; Yan Wen Zhang; Xing Xiang Zhang; Yoshihisa Takaishi; Hong Quan Duan
Six new sesquiterpenes, 2,6(12),10-humulatrien-7β-ol-1-one (1), 2 α-acetoxy-5α-methoxy-enantio-caryophylla-8(15)-en-3-one (2), 2α-acetoxy-5α-hydroxy-enantio-caryophylla-8(15)-en-3-one (3), 2α-acetoxy-4β,5α-hydroxy-enantio-caryophylla-8(15)-en-3-one ( 4), 2α-acetoxy-4β,5β-hydroxy-enantio-caryophylla-8(15)-en-3-one (5), 2β-acetoxy-4-caryophyllen-8β-ol-3-one (6), and nineteen known compounds were isolated from the ethanol extract of Buddleja daviddi. The structures were elucidated by spectroscopic methods. Compounds 8-11, 14, 16, 17, and 20 showed significant immunosuppressive activities, and 8-11 and 14 were cytotoxic on HeLa and L929 cell lines.
Planta Medica | 2012
Mei Na Jin; Zhi Yao; Yoshihisa Takaishi; Hong Quan Duan
Seven new dibenzocyclooctadiene lignans, named propinquain E-K, together with 11 known lignans were isolated from the ethanol extract of the roots of Schisandra propinqua subsp. sinensis. The structures of the new compounds were elucidated by spectroscopic methods, including ¹H- and ¹³C-NMR, 2D-NMR, HR ESI-MS, and CD spectra. Two dibenzocyclooctadienes revealed inhibitory effects on lymphocyte proliferation.
Chinese Chemical Letters | 2007
Zhen Ying Li; Zhao-Sheng Liu; Qing Wei Zhang; Hong Quan Duan
Chinese Chemical Letters | 2009
Wei Qiao; Zhi Yao; Wen Zhang; Hong Quan Duan
Chinese Chemical Letters | 2008
Lan Tian Zhang; Yan Wen Zhang; Yoshihisa Takaishi; Hong Quan Duan
Chinese Chemical Letters | 2007
Quan Lin Yu; Hong Quan Duan; Wen Yuan Gao; Yoshihisa Takaishi
Chinese Chemical Letters | 2011
Xiao Xia Li; Xin Liu; Li Hong Bai; Hong Quan Duan; Yan-Ping Huang; Zhao-Sheng Liu
Chinese Chemical Letters | 2007
Pu Liu; Yoshihisa Takaishi; Hong Quan Duan
Chinese Chemical Letters | 2008
Qian Shen; ZhiYao; Yoshihisa Takaishi; Yan Wen Zhang; Hong Quan Duan
Chinese Chemical Letters | 2007
Ming Chan Li; Zhi Yao; Yan Wen Zhang; Yoshihisa Takaishi; Hong Quan Duan