The structure of itesmol and its C-24 congenor.
Abstract Structures 1 and 2 respectively have been assigned to itesmol and its minor congener isolated from a cactus indigenous to Mexico.
Cholest-4-en-4,16β,18,22R-tetrol-3-one 16,18-diacetate A novel polyhydroxylated steroid from the hydroid Eudendrium SP
Abstract The title compound has been isolated from the hydroid Eudendrium sp. (Cnidaria, Hydrozoa, Hydroidea) and its structure elucidated by spectral means.
Phloroglucinol derivatives from Hypericum japonicum.
The isolation and identification of a new phloroglucinol derivative (2), a diterpenol (4), together with the known compounds flavesone (1) and sarothralen B (3), from the aerial parts of Hypericum japonicum are reported. Their structures were established by extensive spectral analysis and the structure of (3) has also been confirmed by a single crystal X-ray determination.