Phytochemical reinvestigation on Ligularia nelumbifolia afforded four novel sinapyl alcohol analogues named nelumols BE (1-4) and three known sinapyl alcohol derivatives (5-7). Their structures were elucidated by NMR techniques. Total syntheses of cytotoxic geranyloxy sinapyl alcohol (6) and geranyloxy sinapyl aldehyde (7) were carried out via two different paths. The 4-O-benzyl-substituted analogues (20 and 27) as well as the 4-O-(2- ...
[Epifano, Francesco; Genovese, Salvatore; James Squires; Gray, Matthew A. Bioorganic and Medicinal Chemistry Letters, 2012 , vol. 22, # 9 p. 3130 - 3135]