P-7 中国横断山脈地域における4種のLigularia属植物の種内多様性(ポスター発表の部)

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Four Ligularia species, L. tongolensis, L. cymbulifera, L. pleurocaulis, and L. virgaurea, in the northwestern Yunnan and the southwestern Sichuan Provinces of China were examined with respect to the chemical composition and nucleotide sequence. Most of the identified furanoeremophilanes in L. tongolensis (1, 2, 4, 7) and L. cymbulifera (1, 3, 7, 8, 9) were oxygenated at 3, 6, and 15-positions, which were also obtained from L. atroviolacea (1, 5, 6). Four out of 19 L. tongolensis samples contained a strongly Ehrlich-positive compound, and five variants of the atpB-rbcL sequence were found. In contrast, no intra-specific variation was observed in L. cymbulifera samples. Compounds 14 and furanoligularenone (15) were isolated from the Yunnan and the Sichuan samples L. pleurocaulis, respectively, along with four common components (10-13). Base multiplicity in the ITS1 region was observed at about 10 positions for the Sichuan samples. These results show that L. pleurocaulis in Yunnan and in southwestern Sichuan can be distinguished. Four of eleven samples of L. virgaurea var. virgaurea were found to contain four new furanoeremophilanes, virgaurenones A-D (16-19) and a new eremophilanolide, 20. The other samples contained different furanoeremophilanes and their derivatives including nor-type of compounds, two of which were new. Diversity was found to be present in the nucleotide sequences as well. The chemical composition was found to be correlated with the ITS variation but not with the geographic distribution of the samples.
天然有機化合物討論会の論文
2006-09-15

P-7 中国横断山脈地域における4種のLigularia属植物の種内多様性(ポスター発表の部)

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