Stereostructures of New Labdane-Type Diterpenes, Excoecarins F, G1, and G2 from the Wood of Excoecaria agallocha

Tenji KONISHI; Takao KONOSHIMA; Yasuhiro FUJIWARA; Shiu KIYOSAWA; Kazumoto MIYAHARA; Masatoshi NISHI

doi:10.1248/cpb.47.456

Tenji KONISHI, Takao KONOSHIMA, Yasuhiro FUJIWARA, Shiu KIYOSAWA, Kazumoto MIYAHARA, Masatoshi NISHI

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Keywords: Excoecaria agallocha, excoecarin F, excoecarin G1, excoecarin G2, labdane-type diterpene, chlorinated diterpene

JOURNAL FREE ACCESS

1999 Volume 47 Issue 3 Pages 456-458

DOI https://doi.org/10.1248/cpb.47.456

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Abstract

Three new labdane-type diterpenes, excoecarins F, G1, and G2, were isolated from resinous wood of Excoecaria agallocha LINN collected from Okinawa prefecture. Stereochemistries of the new diterpenes were determined on the basis of chemical and physicochemical evidence. Excoecarin F was found to posses a chloride element in its structure.

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