47 ツルボ(Scilla scilloides DRUCE,Liliaceae)鱗茎中の新型ホモイソフラバノンの構造
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Three phenolic compounds were isolated from the bulbs of Scilla scilloides Druce (Liliaceae). One was identical with 3,9-dihydro-eucomnalin (1), one of the homo-isoflavonoids reported by Tamm, et al. The others, named 2-hydroxy-7-O-methyl-scillascillin (2), C_<18>H_<14>O_7, mp 188-189°, [α]_D-11.5°→+79.2°, and scillascillin (3), C_<17>H_<12>O_6, mp 210-211°, [α]_D+40°, were found to be novel type homo-isoflav-anones in which position 3 was united with position 2' to form a spiro-cyclobutene ring. The structure of 2 was determined on the basis of chemical and spectral evidences and confirmed by X-ray analysis of a single crystal (orthorhombic, space group P 2_12_12_1). The structure of 3 was established by X-ray analysis of its mono-O-methyl derivative (10), C_<18>H_<14>O_6, mp 161-162° (orthorhombic, space group P 2_12_12_1).
- 天然有機化合物討論会の論文
- 1973-10-01
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