Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels.In a patent， HPLC of Formula: C9H6BrNO, Which mentioned a new discovery about 17826-04-9
6?-Iodoaureol, an iodo-sesquiterpene hydroquinone, 6?-aureoxyaureol, a bissesquiterpene hydroquinone, and four brominated indole alkaloids 3-6 were isolated from the Thai sponge Smenospongia sp. Additionally, four known sesquiterpene hydroquinones 12-15, ten known brominated indole alkaloids 7-11, 17-18, and 20-22, ergosterol, and furospinosulin-1 were also isolated. Compound 1 is the first reported iodo-sesquiterpene hydroquinone and compounds 7-11 were isolated for the first time from natural sources. The structures were characterized by spectroscopic analyses as well as comparison with literature data. Several of these metabolites were evaluated for cytotoxic activity against seven tumor cell lines.
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Reference：
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles