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Two new sesquiterpenes, pelorol (1) and 5-epi-smenospongine (2), and seven known ones (3-9) were isolated from the sponge Petrosaspongia metachromia, collected from Yap, Federated States of Micronesia. Their structures were determined from spectral data. Pelorol (1) possesses a new carbon skeleton.
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Kwak et al. (2000) studied this question.
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