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Hainanerectamines A-C, alkaloids from the Hainan sponge Hyrtios erecta
Wen-Fei He1, Duo-Qing Xue2, Li-Gong Yao3
1School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, China. wenfeihe@126.com.
Abstract:
Two new indole alkaloids, hainanerectamines A (1) and B (2), and one new β-carboline alkaloids, hainanerectamines C (4), along with five known related alkaloids (3, 5-8), have been isolated from the Hainan marine sponge Hyrtios erecta. The structures of new compounds 1, 2 and 4 were determined by detailed analysis of their 1D and 2D NMR spectra and by comparison of their spectroscopic data with those of related model compounds. Compounds 2-4 exhibited moderate inhibitory activity against Aurora A, a member of serine/threonine kinase family involving in the regulation of cell division and a new target in cancer treatment, with IC50 values of 24.5, 13.6, and 18.6 μg/mL, respectively.
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