18-nor-Podocarpanes and podocarpanes from the Bark of Taiwania cryptomerioides

University of Taipei > 理學院 > 應用物理暨化學學系暨碩士班 > 期刊論文 > Item 987654321/2593

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题名:	18-nor-Podocarpanes and podocarpanes from the Bark of Taiwania cryptomerioides
作者:	Shih-Chang Chiena Cheng-Chi Chen Hsi-Lin Chiu Chi-I Chang Mei-Hwei Tseng Yueh-Hsiung Kuoa 張誌益郭悅雄曾梅慧簡世昌陳政琪邱錫臨
贡献者:	臺北市立教育大學自然科學系
日期:	2008
上传时间:	2009-07-27 16:49:19 (UTC+8)
摘要:	Seven nor- and podocarpane-type diterpenes were isolated from the bark of Taiwania cryptomerioides Hayata, including three 18-nor-podocarpanes: 18-nor-1β,4α,14-trihydroxy-13-methoxy-8,11,13-podocarpatriene (1), 18-nor-1β,4α,13,14-tetrahydroxy-8,11,13-podocarpatrien-7-one (2), 18-nor-1β,4α,14-trihydroxy-13-methoxy-8,11,13-podocarpatrien-7-one (3), 1β,14,19-trihydroxy-13-methoxy-8,11,13-podocarpatrien-7-one (4), 1β,13,14,18-tetrahydroxy-8,11,13-podocarpatrien-7-one (5), 18-acetoxy-1β,13,14-trihydroxy-8,11,13-podocarpatrien-7-one (6), and 1β,14,18-trihydroxy-13-methoxy-8,11,13-podocarpatrien-7-one (7). Their structures were determined by application of 1D and 2D NMR spectroscopy and other techniques. Podocarpane-type diterpenes do not occur extensively in nature, and the presumed oxidative enzyme in this plant will be of interest to identify.
關聯:	phytochemistry V69(12) P.2336-2340
显示于类别:	[應用物理暨化學學系暨碩士班] 期刊論文

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