Abstract
Two new scalarane derivatives, phyllactones F and G, have been isolated from the sponge Phyllospongia foliascens. Compounds 1 and 2 are anomers whose structures were determined on the basis of spectral data. The absolute stereochemistry of phyllactone B [6] has been established using Moshet's method, and this permitted verification of the assignments of absolute stereochemistry for all scalarane sesterterpenes isolated from the Chinese sponge P. foliascens
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