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  • Title: Hyrtiosenolides A and B, two new sesquiterpene gamma-methoxybutenolides and a new sterol from a Red Sea sponge Hyrtios species.
    Author: Youssef DT, Singab AN, van Soest RW, Fusetani N.
    Journal: J Nat Prod; 2004 Oct; 67(10):1736-9. PubMed ID: 15497952.
    Abstract:
    Two new sesquiterpene gamma-methoxybutenolides, hyrtiosenolides A (1) and B (2), together with a new 4alpha-methyl polyoxygenated steroid, hyrtiosterol (3), were isolated from a Red Sea sponge, Hyrtios species. Their structures were elucidated by analysis of their 1D and 2D NMR spectra and HRFABMS. Compounds 1 and 2 showed weak antibacterial activity against Escherichia coli.
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