P-7 フラノエレモフィラン化合物を生産しないLigularia数種の中国横断山脈地域における多様性(ポスター発表の部)

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Intra-specific diversity in L. tsangchanensis, L. latihastata, L. lankongensis, L. duciformis, and their related species growing in Yunnan and Sichuan provinces of China was studied by chemical and genetic approaches. L. tsangchanensis samples collected in Yunnan and in Sichuan could be distinguished based on the root constituents and the base sequences of the internal transcribed spacers (ITSs) of the ribosomal RNA gene. The Yunnan samples were found to contain cacalol (1) as the major component, while samples from Sichuan contained eremophila-9, 11-dien-8-ones (5,6) and their derivative as the major components. Intra-specific diversity in L. latihastata was found to be small in chemical composition and large in the atpB-rbcL sequence. In all collected L. latihastata and L. villosa samples, two major components, 2-isopropenyl-5, 6-dimethoxybenzofuran (11) and 2-isopropenyl-5-acetyl-6-methoxybenzofuran (euparin; 12) were detected, indicating that the two species are chemically close to each other. Five highly oxygenated bisabolane-type sesquiterpenes were isolated from L. lankongensis, including four new compounds 15, 17-19. A small intra-specific diversity was observed in the composition of the root chemicals but not in the DNA sequence. L. duciformis collected in Sichuan was found to contain sinapyl or coniferyl alcohols (20-23), while the species in Yunnan contained oplopanes (24,25) or eremophilane sesquiterpenes (8,9). Diversity was observed in the atpB-rbcL sequence as well.
天然有機化合物討論会の論文
2008-09-01

P-7 フラノエレモフィラン化合物を生産しないLigularia数種の中国横断山脈地域における多様性(ポスター発表の部)

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