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作 者:江洪波[1] 田祥琴[1] 胡小兵[1] 黄静[1] 孙奇[1] 陈渝[1]
出 处:《华西药学杂志》2006年第5期416-419,共4页West China Journal of Pharmaceutical Sciences
基 金:四川大学科技创新基金资助
摘 要:目的 研究麦冬中几种二氢高异黄酮的立体结构。方法 采用光谱方法,并用圆二色谱确定立体结构。结果 确定6个二氢高异黄酮的立体结构,鉴定结果为:5,7-dihydroxy-6-methyl-8-methoxy-3(R)-(2’-hydroxy-4,-methoxy-benzyl)chroman-4-one(Ⅰa);5,7-dihydroxy-6-methyl-8-methoxy-3(S)-(2’-hydroxy-4’-methoxybenzyl)ehroman-4-one(Ⅰb);5,7-dihydroxy-6,8-dimethyl-3(R)-(3’-methoxy-4’-hydroxybenzyl)chroman-4-one(Ⅱa);5,7-dihydroxy-6,8-dimethyl-3(S)-(3’-methoxy-4’-hydroxybenzyl)chroman-4-one(Ⅱb);R—methylophiopogonanoneB(Ⅲ)和R-methylophiopogonanone A(Ⅳ)。结论 首次确定了6个二氢高异黄酮(Ⅰ-Ⅳ)的立体构型。OBJECTIVE To study the absolute configurations of 6 homoisoflavonoids from the tubers of 0. japonicus (Liliaceae). METHODS The absolute configurations of 6 ophiopogonanones were identified by their physicochemical properties, spectral analysis and CD spectra. RESULTS Their structures were identified as :5,7 - dihydroxy - 6 - methyl - 8 - methoxy - 3 (R) - ( 2' - hydroxy - 4' - methoxybenzyl) chroman - 4 - one ( Ⅰ a ) ; 5,7 - dihydroxy - 6 - methyl - 8 - methoxy - 3 (S) - ( 2' - hydroxy - 4' - methoxy- benzyl) chroman - 4 - one ( Ⅰ b ) ; 5,7 - dihydroxy - 6,8 - dimethyl - 3 (R) - ( 3' - methoxy - 4' - hydroxybenzyl) chroman - 4 - one ( Ⅱa ) ;5,7 - dihydroxy - 6,8 - dimethyl - 3 (S) - ( 3' - methoxy - 4' - hydroxybenzyl ) c hroman - 4 - one ( Ⅱb ) ; R - methylophio- pogonanone B( Ⅲ ) and R - methylophiopogonanone A ( Ⅳ ). CONCLUSION The absolute configuration of 6 homoisoflavonoids (Ⅰ - Ⅳ) have been determined for the first time.
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