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Lipoxygenase Inhibitory Lignans from Salvia santolinifolia

Mehmood S., Riaz N., Ahmad Z., Afza N., Malik A.

Polish Journal of Chemistry

2008

Vol. 82, nr 3

571-575

Santolinol, a new lignan has been isolated from the chloroform soluble fraction of Salvia santolinifolia and as signed the structure 1 on the basis of spectral studies including 2D NMR. In addition three bifuranolignans namely didemethylpinoresinol 2, (+) fraxiresinol 3 and (+) 1-hydroxysyringaresinol 4 have also been isolated for the first time from this species. All these compounds showed potent inhibitory potential against the enzyme lipoxygenase.

A New Diterpenoid, Taibairubescensin C

Li B. -L., Shi Z. -X, Pan Y. -J., Tian X. -H.

Polish Journal of Chemistry

2002

Vol. 76 / nr 5

721-724

A new kaurenoid, taibairubescensin C (1), was isolated from the ethanol extract of the leaves and tender branches of Isodon rubescens (Hemsl.) Hara. Its structure was designated as 2 ,6_-diacetoxy-3 ,11 -dihydroxy-ent-kaur-16-en-15-one (1) on the basis of detailed spectroscopic analysis.