作者:Luo, Yinggang、Liu, Yan、Luo, Dixiang、Gao, Xiaoping、Li, Bogang、Zhang, Guolin
DOI:10.1055/s-2003-43215
日期:2003.9
Two new phenanthroquinolizidine alkaloids, boehmeriasins A and B, were isolated from the aqueous ethanolic extract of Boehmeria siamensis Craib (Urticaceae) by bioassay-guided fractionation. Their structures were elucidated on the basis of spectral evidence. Boehmeriasin A possesses cytotoxic activity against 12 cell lines from 6 panels of cancer including lung cancer, colon cancer, breast cancer, prostate cancer, kidney cancer and leukemia with GI50 between 0.2 and 100 ng/mL, whereas boehmeriasin B showed lower activity.
通过生物测定指导分馏法,从荨麻科植物苧麻(Boehmeria siamensis Craib)的乙醇水提取物中分离出了两种新的蒽醌类生物碱--苧麻素 A 和 B。根据光谱证据阐明了它们的结构。苧麻素 A 对 6 种癌症(包括肺癌、结肠癌、乳腺癌、前列腺癌、肾癌和白血病)的 12 种细胞株具有细胞毒活性,GI50 在 0.2 至 100 ng/mL 之间,而苧麻素 B 的活性较低。