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The structure of silydianin, an isomer of silymarin (silybin), by x-ray analysis

✍ Scribed by Donald J. Abraham; Shozo Takagi; Robert D. Rosenstein; Ryonosuke Shiono; Hildebert Wagner; Ludwig Hörhammer; Otto Seligmann; Norman R. Farnsworth

Publisher
Elsevier Science
Year
1970
Tongue
French
Weight
200 KB
Volume
11
Category
Article
ISSN
0040-4039

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✦ Synopsis

The naiuml product silymarin (silybin) C25H220,0 (1,2) was isolated from the fruik of Silybum marianum Gaertn. seveml years ago. The structure of silymarin, a antihepatataxic agent (3), has been under investigation by seveml workers, and fwo groups hove proposed structures for this substan.ce.

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The seeds of Oaosia panamensi& Berth. sad related speoiea caataia a amber of related alkaloidsl. Among thea is oaosaaiao, C20D3SN3, also knowa as piptaaine\* and alkaloid A3. The fonaldebYde addact of C.&lsN3, which we shall designate as jraine, is identical to a aaturallY occurriag 4 alkaloid in O