作者:Stefan Gafner、Jean-Luc Wolfender、Malo Nianga、Helen Stoeckli-Evans、Kurt Hostettmann
DOI:10.1016/0031-9422(96)00135-5
日期:1996.7
From a dichloromethane extract of Newbouldia laevis roots, four new (6-hydroxydehydroiso-alpha-lapachone, 7-hydroxydehydroiso-alpha-lapachone, 5,7-dihydroxydehydroiso-alpha-lapachone and 3-hydroxy-5-methoxydehydroiso-alpha-lapachone) and six known naphthoquinones have been isolated. Their structures were established by spectroscopic methods (UV, EI mass spectrometry, 1H and 13C NMR) and that of 7-
从 Newbouldia laevis 根的二氯甲烷提取物中,四种新的(6-羟基脱氢异-α-拉帕酮、7-羟基脱氢异-α-拉帕酮、5,7-二羟基脱氢异-α-拉帕酮和 3-羟基-5-甲氧基脱氢异-α-拉帕酮)并已分离出六种已知的萘醌。它们的结构是通过光谱方法(UV、EI 质谱、1H 和 13C NMR)建立的,7-羟基脱氢异-α-拉帕酮的结构通过 X 射线晶体学证实。所有萘醌均显示出对黄瓜枝孢和白色念珠菌的抗真菌活性,以及对枯草芽孢杆菌和大肠杆菌的活性。