作者:Harley da S. Alves、Maria de F. V. de Souza、Maria C. de O. Chaves
DOI:10.1590/s0103-50532011000800026
日期:——
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
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)进行解释外,还通过UV,IR,MS,1D和2D(1H和13C NMR)光谱技术确定了它们的结构。