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Spongian Diterpenes Including One with a Rearranged Skeleton from the Marine Sponge Spongia officinalis.

08:00 EDT 16th May 2019 | BioPortfolio

Summary of "Spongian Diterpenes Including One with a Rearranged Skeleton from the Marine Sponge Spongia officinalis."

Five new diterpenes, including an unprecedented 5,5,6,6,5-pentacyclic diterpene, sponalactone (1), two new spongian diterpenes, 17- O-acetylepispongiatriol (2) and 17- O-acetylspongiatriol (3), and two new spongian diterpene artifacts, 15α,16α-dimethoxy-15,16-dihydroepispongiatriol (4) and 15α-ethoxyepispongiatriol-16(15 H)-one (5), were isolated from a South China Sea collection of the marine sponge Spongia officinalis, together with three known analogues (6-8). The structures of the new diterpenes were elucidated by extensive spectroscopic analysis. The absolute configurations were established on the basis of ECD data. Compounds 1-5 and 7 exhibited moderate inhibition against LPS-induced NO production in RAW264.7 macrophages with IC values of 12-32 μM.

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Name: Journal of natural products
ISSN: 1520-6025
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Validation of the sex of an individual by means of the bones of the SKELETON. It is most commonly based on the appearance of the PELVIS; SKULL; STERNUM; and/or long bones.

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