皮质抑素是最近发现的一类海洋天然产物,其特征是具有不寻常的甾体骨架,已发现其通过未知机制不同程度地抑制培养中各种哺乳动物细胞的增殖。我们描述了从一个共同的前体合成皮质抑素的综合路线,而后者又由两个结构复杂性相似的片段组装而成。皮质抑素 A 和 J,以及 K 和 L 首次在平行过程中从由单一化合物制备的类似中间体合成。通过鉴定将皮质抑素 L 合成系列中的中间体与皮质抑素 A 和 J 的相应中间体联系起来的简便实验室转化,我们推测自然界中可能会发生一些相关的路径,
The present invention relates to analogs of cortistatin A, J, K, and L, having the general formula: I and salts thereof, wherein R
1
, R
2
, R
3
, R
4
, n, and m are as defined herein; processes for preparing such compounds and intermediates thereto; pharmaceutical compositions comprising such compounds; methods for treating a proliferative disease; methods for treating a disease associated with aberrant angiogenesis; methods for inhibiting angiogenesis; and processes for preparing cortistatin A, J, K, and L, and analogs thereof.