Antineoplastic Agents. 551. Isolation and Structures of Bauhiniastatins 1−4 from <i>Bauhinia </i><i>p</i><i>urpurea</i>
作者:George R. Pettit、Atsushi Numata、Chika Iwamoto、Yoshihide Usami、Takeshi Yamada、Hirofumi Ohishi、Gordon M. Cragg
DOI:10.1021/np058075+
日期:2006.3.1
Bioassay-guided (P388 lymphocytic leukemia cell line) separation of extracts prepared from the leaves, stems, and pods of Bauhinia purpurea, and, in parallel, its roots, led to the isolation of four new dibenz[b,f]oxepins (2a, 3-5) named bauhiniastatins 1-4, as well as the known and related pacharin (1) as cancer cell growth inhibitors. The occurrence of oxepin derivatives in nature is quite rare.
用生物测定法(P388淋巴细胞白血病细胞系)分离紫荆叶,茎和荚果以及其根部制备的提取物,并平行分离其根部,从而导致分离出四种新的二苯并[b,f]氧杂环丁烷(2a ,3-5)命名为紫荆抑素素1-4,以及已知的和相关的pacharin(1)作为癌细胞生长抑制剂。在自然界中,oxepin衍生物的出现非常罕见。紫荆抑素素1-4被发现对人癌细胞系的小面板具有显着的生长抑制作用,紫荆抑素素1(2a)也被发现抑制P388癌细胞系。这些新的癌细胞生长抑制剂的结构是通过包括HRMS和2D NMR在内的光谱技术建立的。