Studies on the Chemical constituents of the Taiwanese Liverworts Plagiochila peculiaris

• Main Authors: Liou, Chuang-Shing, 劉創勛
• Other Authors: Wu, Chia-Li
• Format: Others
• Language: zh-TW
• Published: 1997
• Online Access: http://ndltd.ncl.edu.tw/handle/93738219534047945755

碩士 === 淡江大學 === 化學學系 === 85 === In this thesis, the chemical constituents of the liverwort Plagiochila peculiaris collected at Yuenyaag Lake (Taiwan) were investigated. The same findings as previous studies were again observed in the present research, such as the new sesquiteipenoid, peculiaroxide, and a series of 2, 3-secoaromadendrane-type compounds. In addition, two new fusicoccane- type diterpenoids were isolated and identified from this liverwort species. The first novel component is named isofusicoccantriepoxide(41), which possesses a methyl-rearranged fusicoccane skeleton. The other new one, named fusicoccanin(44), is a highly oxygenated diterpenoid of fusicoccane-type. New structures were elucidated mainly on the basis of various NMR spectral data. The Taiwanese liverwort Plagiochila peculiaris biosynthesizes not only 2, 3-secoaromadendrane-type sesquiterpenoids, but also fusicoccane-type diterpenoids as its major components.