Studies on the Chemical Constituents of the Root of Taiwania cryptomerioides Hayata
Date Issued
2004
Date
2004
Author(s)
Ke, Mei-Ju
DOI
zh-TW
Abstract
Taiwania cryptomerioides Hayata is indigenous to the central part of Taiwan at altitudes of 1800~2600 meters. The wood of this tree is one of the best building materials in Taiwan.
The acetone extract from the root of Taiwania cryptomerioides Hayata was concentrated to give a residue which was partitioned between ethyl acetate and water. The ethyl acetate layer was separated by column chromatography on silica gel, preparative thin layer chromatography, and high performance liquid chromatography (HPLC) to give 45 compounds. From these, 10 compounds are new, and 2 compounds were the first isolated from natural occurring. The total compounds included 24 sesquiterpenoids, 12 diterpenoids, 7 lignoids, 1 steroids, and 1 others.
The known compounds were identified by spectral analysis and comparison with those reported in literatures or authentic samples. The structures of new compounds were elucidated by spectral evidence and chemical methods.
Subjects
Taiwania cryptomerioides Hayata
Type
thesis
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