X-ray Crystal Structure of Lygodinolide: A Novel Spiro Furopyran-Perhydrophenanthrene Derivative from Lygodium flexuosum
In a previous paper,1 we reported the structure elucidation of O-p-coumaryl dryocrassol, a new compound isolated along with the known compounds tectoquinone, kaempferol, kaempferol-3-β-D-glucoside, β-sitosterol, stigmasterol, and dryocrassol itself from Lygodium flex-uosurn (Polypodiaceae), a fern widely distributed in India and known to possess potent antifertility activity.2 Further investigation on the methanolic extract of this plant afforded, in 0.002% yield, yet another new compound, lygodinolide (1), the characterization of which is described herein. © 1990, American Chemical Society. All rights reserved.
Pakrashi, SC; Saha, CR; Chaudhuri, C; Achari, B; McPhail, DR; McPhail, AT
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