Total synthesis of two cytotoxic natural products, nelumol A (1) and nelumal A (2), were carried out by two different paths. 4-O-Benzyl substitute analogues 26 and 27, as well as the 4-O-(2-methyl-butenyl) derivative...Total synthesis of two cytotoxic natural products, nelumol A (1) and nelumal A (2), were carried out by two different paths. 4-O-Benzyl substitute analogues 26 and 27, as well as the 4-O-(2-methyl-butenyl) derivatives 29 and 30 were also synthesized for a SAR investigation. 1 and 2 were also measured on different tumor cell line.展开更多
Phytochemical investigation of the roots of Ligularia nelumbifolia afforded three new sinapyl alcohol derivatives together with two other novel constituents.Their structures were elucidated by high field 1D and 2D NMR...Phytochemical investigation of the roots of Ligularia nelumbifolia afforded three new sinapyl alcohol derivatives together with two other novel constituents.Their structures were elucidated by high field 1D and 2D NMR techniques and chemical transformations.展开更多
基金This work is financially supported by the Life Science Special Fund of Chinese Academy of Sciences Supported by the Ministry of Finance (STZ-00-24), the Yunnan Province Foundation of Applied and Basic Research (2000C0072M), the Foundation for Visiting Pr
文摘Total synthesis of two cytotoxic natural products, nelumol A (1) and nelumal A (2), were carried out by two different paths. 4-O-Benzyl substitute analogues 26 and 27, as well as the 4-O-(2-methyl-butenyl) derivatives 29 and 30 were also synthesized for a SAR investigation. 1 and 2 were also measured on different tumor cell line.
基金①This work was supported by the National Natural Science Foundation of China and the doctoral programmc from State Education Commission of China.
文摘Phytochemical investigation of the roots of Ligularia nelumbifolia afforded three new sinapyl alcohol derivatives together with two other novel constituents.Their structures were elucidated by high field 1D and 2D NMR techniques and chemical transformations.