作者:Jia-Chen Zi、Sheng Lin、Cheng-Gen Zhu、Yong-Chun Yang、Jian-Gong Shi
DOI:10.1080/10286020.2010.491476
日期:2010.6
Four new minor constituents including two cyclodipeptides (1 and 2) and two cyclopentene derivatives (3 and 4), together with four known cyclodipeptides, have been isolated from an ethanolic extract of the tubers of Gymnadenia conopsea. Their structures including absolute configurations were determined by spectroscopic data interpretation combined with chemical methods. Among them, compound 1 contains
已从Gymnadenia conopsea块茎的乙醇提取物中分离出四个新的次要成分,包括两个环二肽(1和2)和两个环戊烯衍生物(3和4),以及四个已知的环二肽。通过光谱数据解释结合化学方法确定了它们的结构,包括绝对构型。其中,化合物1含有异常的S-(4″-羟基苄基)半胱氨酸残基3和4 分别具有[(4-甲基环戊基)甲基]苯和(4-羟甲基环戊基)苯碳骨架,它们都是首先从天然来源中发现的。