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Hyrtiosins A and B, new indole alkaloids from the Okinawan marine sponge Hyrtios erecta

✍ Scribed by Jun'ichi Kobayashi; Tetsuya Murayama; Masami Ishibashi; Sumiko Kosuge; Masako Takamatsu; Yasushi Ohizumi; Hiroshi Kobayashi; Tomihisa Ohta; Shigeo Nozoe; Sasaki Takuma


Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
342 KB
Volume
46
Category
Article
ISSN
0040-4020

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πŸ“œ SIMILAR VOLUMES


Hyrtiosins A–E, Five New Scalarane Seste
✍ Zhi-Guo Yu; Kai-Shun Bi; Yue-Wei Guo πŸ“‚ Article πŸ“… 2005 πŸ› John Wiley and Sons 🌐 German βš– 178 KB πŸ‘ 1 views

## Abstract Five new scalarane sesterterpenes, hyrtiosins A–E (**1**–**5**), together with three previously reported sesterterpenes, 25‐dehydroxy‐12‐__epi__‐scalarin (**6**), 12‐__epi__‐scalarin (**7**) and heteronemin (**9**), were isolated from the South China Sea sponge __Hyrtios erecta.__ Their

Keramamine-A and -B, novel antimicrobial
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Keramamine-A and -B, two new B-carboline alkaloids with a 13 membered ring have been isolated from the Okinawan marine sponge Pellina sp. as antimicrobial substances and the structures of keramamine-A and -B have been determined by X-ray analysis and by spectral and chemical means, respectively. As