Hyrtiosins

Kobayashi, J., Miu ayama, T., Ishibashi, M., Kosuge, S., Takamatsu, M., Ohizumi, Y., Kobayashi, H., Ohta, T., Nozoe, S., Sasaki, T., (1990). Hyrtiosins A and B, new indole alkaloids from the Okinawan marine sponge Hyrtios erecta. Tetrahedron 46, 7699-7702. 

In contrast to numerous reports of terrestrial alkaloids, only a single report applying inverse-detected 2D NMR methods to indole alkaloids from a marine source has appeared. Kobayashi et al. (1990b) reported the structures of several simple indole alkaloids, hyrtiosins A and B (44, 45), from... 

Yu, Z.-G., Bi, K.-S., and Guo, Y.-W. (2005) Hyrtiosins A-E, five new scalarane sesterterpenes from the South China sea sponge Hyrtios erecta. Helv. Chim. Acta. 88,1004-1009. 

Bergman, J., Janosik, T., and Johnsson, A.L. (1999) Synthesis of hyrtiosin B, a bis-indole alkaloid from the Okinawan marine sponge Hyrtios erecta. Synthesis, 580-582. 

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