New Cytotoxic Bis 5-Alkylresorcinol Derivatives from the Leaves of <i>Oncostemon </i><i>b</i><i>ojerianum </i>from the Madagascar Rainforest
作者:V. S. Prakash Chaturvedula、Jennifer K. Schilling、James S. Miller、Rabodo Andriantsiferana、Vincent E. Rasamison、David G. I. Kingston
DOI:10.1021/np0201568
日期:2002.11.1
Oncostemon bojerianum resulted in the isolation of eight new 5-alkylresorcinols, named oncostemonols A-H (1-8), and two known derivatives, (8'Z)-1,3-dihydroxy-5-[16'-(3' ',5' '-dihydroxyphenyl)-8'-hexadecen-1'-yl]benzene (9) and (8'Z)-1,3-dihydroxy-5-[14'-(3' ',5' '-dihydroxyphenyl)-8'-tetradecen-1'-yl]benzene (10). The structures of the new compounds 1-8 were elucidated on the basis of extensive 1D
生物测定法指导的Oncostemon bojerianum叶的CH(2)Cl(2)-MeOH提取物的分馏导致分离出八个新的5-烷基间苯二酚,命名为oncostemonols AH(1-8),和两个已知的衍生物,(8 'Z)-1,3-二羟基-5- [16'-(3'',5''-二羟基苯基)-8'-十六烯-1'-基]苯(9)和(8'Z)-1 ,3-二羟基-5- [14′-(3′′,5′′-二羟基苯基)-8′-十四烯-1′-基]苯(10)。在广泛的1D和2D NMR光谱解释以及化学衍生化的基础上,阐明了新化合物1-8的结构。所有化合物均显示出针对A2780卵巢癌细胞系的细胞毒活性。