Two new diterpenoids from the root nodules of Pygmacopremna herbacea (Roxb.) Moldenke
作者:Galla Srihari、M.V.P.S. Vishnuvardhan、K. Satish、M. Subrahamanyam、T.V. Raju、T. Prabakar、M. Marthanda Murthy
DOI:10.1016/j.phytol.2010.12.004
日期:2011.6
Bharangin (1) analogues, bharangi-γ-lactone (2) and bharangi-δ-lactone (3) were isolated from the ethyl acetate extract of the root nodules of the indigenous medicinal plant Pygmacopremna herbacea (Roxb.) Moldenke (Gantubharangi). Compound 3 was also prepared from bharangin by treating with 2 N KOH in methanol at room temperature. The structures of the compounds were established by means of spectral
从本地药用植物茅草(Pygmacopremna herbacea)(Roxb。)Moldenke(Gantubharangi)根瘤的乙酸乙酯提取物中分离出Bharangin(1)类似物,bharangi-γ-内酯(2)和bharangi-δ-内酯(3)。还通过在室温下用2 N KOH的甲醇溶液处理,从婆罗丹中制备化合物3。通过光谱数据分析,包括高场2D NMR研究,确定了化合物的结构。