Two new bioactive secoiridoid glucoside complexes named hydramacrosides A and B were isolated from the leaves of Hydrangea macrophylla SERINGE var. thunber gii MAKINO. The absolute stereostructures of hydramacrosides A and B were elucidated on the basis of chemical and physicochemical evidence which included the application of the 13C NMR glycosylation shift rule of 1, 1'-disaccharides and the modified Mosher's method. Hydramacrosides A and B exhibited inhibitory effect on the histamine release from rat mast cells induced by antigen-antibody reaction.
                                    从大花绣球花(Hydrangea macrophylla 
SERINGE var. thunbergii 
MAKINO)的叶子中分离出两种新的
生物活性 
SEcoiridoid 糖苷复合物,命名为
水宏糖甙 A 和 B。
水宏糖甙 A 和 B 的绝对立体结构通过
化学和物理
化学证据阐明,包括应用1, 1'-二糖羟基化位移规则和改进的莫舍尔法。
水宏糖甙 A 和 B 对由抗原-
抗体反应引发的大鼠肥大细胞
组胺释放表现出抑制作用。