Tricalysiolide G, and Tricalysiols A and B : rearranged ent-Kaurane-Type and ent-Kaurane-Type Diterpenoids from the Leaves of Tricalysia dubia (Lindl.) Ohwi

Journal of Natural Medicines Volume 61 Issue 1 Page 46-50 published_at 2007-01
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Title ( eng )
Tricalysiolide G, and Tricalysiols A and B : rearranged ent-Kaurane-Type and ent-Kaurane-Type Diterpenoids from the Leaves of Tricalysia dubia (Lindl.) Ohwi
Creator
He Dong-Hui
Shinzato Takakazu
Aramoto Mitsunori
Bando Masahiko
Takeda Yoshio
Source Title
Journal of Natural Medicines
Volume 61
Issue 1
Start Page 46
End Page 50
Abstract
Three rearranged ent-kaurane diterpenes having the cafestol-type framework were isolated from the leaves of Tricalysia dubia. Two of them were found to be known diterpenoids, tricalysiolides B and C. Tricalysiolide B was isolated as colorless prisms in this experiment and its three dimensional structure was determined by X-ray crystallography. The remaining one was a new compound and named tricalysiolide G. Two new ent-kaurane-type diterpenoids, to which tricalysiols A and B were given as trivial names, were also isolated. The structures of the new compounds were elucidated from spectroscopic evidence.
Keywords
Tricalysia dubia
Rubiaceae
rearranged ent-kaurane
ent-kaurane
NDC
Medical sciences [ 490 ]
Language
eng
Resource Type journal article
Publisher
Springer Japan
Date of Issued 2007-01
Rights
Copyright (c) 2007 Springer "The original publication is available at www.springerlin.com"
Publish Type Author’s Original
Access Rights open access
Source Identifier
[ISSN] 1340-3443
[DOI] 10.1007/s11418-006-0016-8
[NCID] AA12114658
[DOI] http://dx.doi.org/10.1007/s11418-006-0016-8