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Centaurea cheirolophaºÍ Centaurea ptosimopappoides      
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Centaurea cheirolophaºÍ
Centaurea ²»ÓÃ˵£¬±íʾ¡°Ê¸³µ¾ÕÊô¡±
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Centaurea ptosimopappoides      
Centaurea ptosimopappoides   ¼ò³Æ ¡°C. ptosimopappoides¡± ¡°ptosi¡±ÓÐÏ´¹Ö®Òâ

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Triterpenes of Centaurea ptosimopappoides
ABSTRACT The roots of Centaurea ptosimopappoides afforded two new triterpenes; a new hopane derivative, 17¦Â,21¦Â-epoxy-16¦Á-ethoxyhopan-3¦Â-ol and a new baccharane type triterpene, 3¦Â-acetoxy-17,24-dioxobaccharane. The known compounds, 17¦Â,21¦Â-epoxyhopan-3¦Â-ol, 3¦Â-acetoxyhop-17(21)-ene and 3¦Â-
cetoxy-erythrodiol were also isolated. In addition, the aerial parts yielded scopoletin, 7-oxositosterol, stigmasterol, ¦Á-amyrin and common sesquiterpene lactones of the genus Centaurea, 11,13-dihydro-desacetylcynaropicrin and cynaropicrin. The structures of the new compounds were determined by high
field spectroscopic methods including 2D NMR techniques. Triterpenes of Centaurea ptosimopappoides.

Available from:
https://www.researchgate.net/pub ... ea_ptosimopappoides [accessed Aug 10, 2015].

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2Â¥2015-08-10 09:18:19
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2Â¥: Originally posted by Î人һÐÄÒ»Òë at 2015-08-10 09:18:19
Centaurea cheirolophaºÍ
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