作者:Wei-Sheng Feng、Yu-Huan He、Xiao-Ke Zheng、Jian-Chao Wang、Yan-Gang Cao、Yan-Li Zhang、Kai Song
DOI:10.3390/molecules21060728
日期:——
Four new monoterpenoid glycosides 1-4, named magnoliaterpenoid A-D, were isolated from a 50% aqueous acetone extract of flower buds of Magnolia biondii, along with one known compound, (1'R,3'S,5'R,8'S,2Z,4E)-dihydrophaseic acid 3-O-β-d-glucopyranoside (5). Their structures and relative configuration were identified by extensive spectroscopic analysis (IR, UV, MS, 1D and 2D NMR). The aglycones of these
从木兰的花蕾的50%丙酮水溶液提取物中分离出四种新的单萜类糖苷1-4,称为木兰萜类化合物AD,以及一种已知的化合物(1'R,3'S,5'R,8'S,2Z,4E )-二氢硫酸3-O-β-d-吡喃葡萄糖苷(5)。通过广泛的光谱分析(IR,UV,MS,1D和2D NMR)鉴定了它们的结构和相对构型。这四个新化合物的糖苷配基具有非常罕见的七元环系统。通过生物遗传异戊二烯规则,提出了四种新化合物的可行的生物合成途径。化合物1、2、3和4在1.95-250 µg / mL的浓度范围内均未显示抗菌活性。