作者:Qing-Lan Guo、Ya-Nan Wang、Cheng-Gen Zhu、Ming-Hua Chen、Zhi-Bo Jiang、Nai-Hong Chen、Xiu-Yun Song、Mei-Jin Zhang、Jian-Gong Shi
DOI:10.1080/10286020.2015.1040000
日期:2015.5.4
Seven new 4-hydroxybenzyl-substituted glutathione derivatives (2-8), together with a known analogue (1), were isolated from the aqueous extract of Gastrodia elata Blume rhizomes. Their structures were determined by using spectroscopic and chemical methods. The absolute configurations of 1-8 were assigned by using Marfey's method, combined with comparing the NMR and CD spectroscopic data of sulfoxide moieties in 3-6 with those of S-(4-hydroxybenzyl)cysteine sulfoxide stereoisomers (9-12) synthesized as authentic samples. The configurations of 9-12 were confirmed by electronic CD calculations based on the quantum-mechanical time-dependent density functional theory. Furthermore, the structures of 1, 3, 5, 7, and 8 were verified by synthesis. Compound 3 was active against serum deprivation-induced PC12 cell damage and synthetic 9-14 exhibited activity against Fe2+-cysteine induced rat liver microsomal lipid peroxidation.