Two new benzofuran lignan glycosides,gelsemiunoside A and B,were isolated from the whole plant of Gelsemium elegans Bent......

苯并呋喃类化合物广泛存在于天然产物中,具有多种生物活性,是重要的医药中间体.为了探索合成此类化合物的有效方法,由一系列酚类与......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

Two benzofuran derivatives were synthesized from 3,4-bis(trimethylsilyl)furan after a series of reactions. Their structu......

l-Methyl-3-ethyl imidazolium bromide[meim]Br/basic alumina(Al_2O_3) has been found to promote the cyclocondensation of c......

The crystal structure of the title compound(C20 H20O4,Mr.=324.36)has been determined by single crystal X-ray diffraction......