Absolute Stereostructures of Hydramacrosides A and B, New Bioactive Secoiridoid Glucoside Complexes from the Leaves of Hydrangea macrophylla SERINGE var. thunbergii MAKINO.
摘要:
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。
Indonesian Medicinal Plants. X. Chemical Structures of Four New Triterpene-Glycosides, Gongganosides D, E, F, and G, and Two Secoiridoid-Glucosides from the Bark of Bhesa paniculata (Celastraceae).
Fournew triterpene-glycosides, named gongganosides D (4), E (5), F (6), and G (7), and two new secoiridoid-glucosides, (7R)-7-caffeoyloxysweroside (8) and (7S)-7-caffeoyloxysweroside (9), were isolated from the bark of the Indonesian medicinal plant Bhesa paniculata (Celastraceae). The chemical structures have been elucidated on the bases of their chemical and physiocochemical properties.
Large-scale purification of unstable, water-soluble secologanic acid using centrifugal partition chromatography
作者:Sung Hum Yeon、Je-Seung Jeon、Key An Um、Chul Young Kim、Young-Joon Ahn
DOI:10.1002/pca.2754
日期:2018.9
Secologanic acid, a major secoiridoid in the flower buds of Lonicera japonica, is a fragile, highly polar compound that readily changes to epivogeloside or vogeloside after being dissolved in methanol. Thus, it is very difficult to obtain secologanic acid on a large‐scale.
Absolute Stereostructures of Hydramacrosides A and B, New Bioactive Secoiridoid Glucoside Complexes from the Leaves of Hydrangea macrophylla SERINGE var. thunbergii MAKINO.
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。