The blue marine sponge Cribrochalina sp., collected in the Republic of the Maldives, was found to contain the new cell growth inhibitory isoquinolinequinones designated cribrostatin 1 (8.8 x 10⁻⁶% yield) and 2 (3.1 x 10¹⁶% yield) which are active against the P388 lymphocytic leukemia cell line (PS ED₅₀ 1.58 µg/mL, PS ED₅₀ 2.73 µg/mL, respectively). Importantly, both cribrostatins 1 and 2 have shown selective activity against all of the nine human melanoma cell lines employed by the U.S. National Cancer Institute. Structural determinations of both substances were accomplished utilizing high field NMR (400 MHz) and mass spectral studies. Confirmation of the cribrostatin 1 structure was achieved by X-ray crystallographic techniques.
在马尔代夫共和国采集的蓝色海洋海绵 Cribrochalina sp、在马尔代夫共和国采集到的蓝色海洋海绵 Cribrochalina sp.1 x 10¹⁶% 收率),对 P388 淋巴细胞白血病细胞株具有活性(PS ED₅₀ 1.58 µg/mL,PS ED₅₀ 2.73 µg/mL)。重要的是,核前列素 1 和核前列素 2 对美国国家癌症研究所使用的所有九种人类
黑色素瘤
细胞系都具有选择性活性。这两种物质的结构测定是通过高场核磁共振(400
MHz)和质谱研究完成的。X 射线晶体学技术确认了 Cribrostatin 1 的结构。