Stigmast-4-ene-3,6-dione an unusual phytotoxic sterone from the roots of Echium vulgare L.
نویسندگان
چکیده
Stigmast-4-ene-3,6-dione an unusual phytotoxic sterone from the roots of Echium vulgare L.
منابع مشابه
Chemical constituents of Piper betle Linn. (Piperaceae) roots.
Column chromatography of the alcoholic extract of Piper betle roots furnished aristololactam A-II and a new phenyl propene, characterized as 4-allyl resorcinol, while the petroleum-ether extract yielded a diketosteroid, viz. stigmast-4-en-3,6-dione. All these compounds were characterized by spectroscopic means. Isolation of these compounds from this source is being reported here for the first t...
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Two new lanostane triterpenoids, 20-hydroxyeuphorbol-7-one (1) and 15α-hydroxyeuphorbol-7,11-dione (2), together with four known triterpenoids, euphorbol-7-one (3), friedelin (4), stigmast-4-ene-6α-ol-3-one (5), stigmasta-4-en-3,6-dione (6), were isolated from ethanol extract of the branches and leaves of Polyalthia obliqua. The structures of 1 and 2 were elucidated on the basis of extensive sp...
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ورودعنوان ژورنال:
- Biochemical systematics and ecology
دوره 28 9 شماره
صفحات -
تاریخ انتشار 2000