1896-77-1Relevant articles and documents
Bellavita et al.
, p. 289 (1974)
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Zimmermann
, (1936)
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Partial synthesis of C-ring derivatives from oleanolic and maslinic acids. Formation of several triene systems by chemical and photochemical isomerization processes
García-Granados, Andrés,López, Pilar E.,Melguizo, Enrique,Parra, Andrés,Simeó, Yolanda
, p. 1491 - 1503 (2007/10/03)
Some triterpenic compounds modified in C-ring were semi-synthesised from oleanolic acid contained in the solid waste of olive-oil pressing. The corresponding esters of oleanolic and maslinic acids rendered products with a diene system, which led to oleantrienes resembling previtamin D2 by an electrocyclic reaction. Chemical and photochemical isomerization of these compounds yielded two different trienes with similar structure to tachysterol and vitamin D2.
BIARYLHEPTANOIDS AND OTHER CONSTITUENTS FROM WOOD OF ALNUS JAPONICA
Nomura, Masayasu,Tokoroyama, Takashi,Kubota, Takashi
, p. 1097 - 1104 (2007/10/02)
The wood of Alnus japonica has been shown to contain a number of biarylheptanoids as well as other phenolics, including secoisolariciresinol diferulate.The co-occurence of cyclized biarylheptanoids with their corresponding acyclic biarylheptanoids has been demonstrated and this fact may have biosynthetic significance.The possible chemotaxonomic importance of biarylheptanoids in members of the Betulaceae is discussed.The isolation and identification of several steroids and triterpenoids are also described.Key Word Index- Alnus japonica; Betulaceae; new biarylheptanoids; biosynthesis; chemotaxonomy; secoisolariciresinol diferulate; steroids; oleanan triterpenoids.
