
Chemical and Pharmaceutical Bulletin p. 381 - 382 (1993)
Update date:2022-08-17
Topics:
Kobayashi
Shinonaga
Shigemori
Sasaki
A new C21 furanoterpene, untenospongin C (1), has been isolated from the Okinawan marine sponge Hippospongia sp. and its structure was determined on the basis of the spectroscopic data and chemical evidence. The absolute configuration of untenospongin B (2) was established by an examination of the NMR data for the 2-methoxy-2-trifluoromethylphenylacetic acid esters of 2.
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