Isolation and Structure of Three Bislactones, Eremopetasitenin B4and Eremofarfugins F and G, fromLigularia przewalskiiand Revision of the Structure of an Epoxy-lactone Isolated fromLigularia intermedia | Zendy

Yoshinori Saito | Zendy; Aya Kamada | Zendy; Yasuko Okamoto | Zendy; Xun Gong | Zendy; Chiaki Kuroda | Zendy; Motoo Tori | Zendy

Open Access

Isolation and Structure of Three Bislactones, Eremopetasitenin B₄and Eremofarfugins F and G, fromLigularia przewalskiiand Revision of the Structure of an Epoxy-lactone Isolated fromLigularia intermedia

Author(s) -

Yoshinori Saito,

Aya Kamada,

Yasuko Okamoto,

Xun Gong,

Chiaki Kuroda,

Motoo Tori

Publication year - 2014

Publication title -

chemistry letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.492

H-Index - 114

eISSN - 1348-0715

pISSN - 0366-7022

DOI - 10.1246/cl.140745

Subject(s) - lactone , chemistry , sesquiterpene lactone , stereochemistry , diastereomer , asteraceae , enol , organic chemistry , botany , sesquiterpene , biology , catalysis

Three bislactones belonging to the eremophilane type were isolated from Ligularia przewalskii (Asteraceae): an epoxylactone (eremopetasitenin B4) identical to the previously isolated lactone, whose structure was revised in this work; a new enollactone (eremofarfugin F); and its diastereoisomer at C-11 (eremofarfugin G). This was identical to the reported lactone, whose stereochemistry was left undetermined. The stereochemistry along with the NMR data of this diastereoisomer was assigned in this study

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