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首页> 外文期刊>Journal of the Brazilian Chemical Society >Three new compounds from Piper montealegreanum Yuncker (Piperaceae)
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Three new compounds from Piper montealegreanum Yuncker (Piperaceae)

机译:Piper montealegreanum Yuncker(Piperaceae)的三种新化合物

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Three new compounds: two flavonoids [(S)-8-formyl-3',5-dihydroxy-7-methoxy-6methylflavanone (1) and 3'-formyl-3,4',6'-trihydroxy-2'-methoxy-5'-methylchalcone (2)] and one phenylpropanoid [ethyl 3,4-methylenedioxy-5-methoxy-7,8-dihydrocinnamate (3)] were isolated from dried branches of Piper montealegreanum. Their structures were established by UV, IR, MS, 1D and 2D (1H and 13C) NMR spectroscopic techniques, besides interpretation of spectral data (1H and 13C NMR) of methylated derivatives of 1 and 2 compounds.
机译:三种新化合物:两种类黄酮[(S)-8-甲酰基-3',5-二羟基-7-甲氧基-6甲基黄酮(1)和3'-甲酰基-3,4',6'-三羟基-2'-甲氧基从胡椒(Piper montealegreanum)的干燥分支中分离出-5'-甲基查尔酮(2)和一种苯基丙烷[3,4-亚甲基二氧基-5-甲氧基-7,8-二氢肉桂酸乙酯(3)]。除了对1和2种化合物的甲基化衍生物的光谱数据(1H和13C NMR)进行解释之外,还通过UV,IR,MS,1D和2D(1H和13C NMR)NMR技术确定了它们的结构。

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