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Comparative Study on the Polysaccharide Contents and Antioxidant Activities of Hippophae rhamnoides subsp. sinensis and Hippophae gyantsensis
Published on: August 15, 2025
Two pentasaccharide resin glycosides from Argyreia acuta
Yong-Qin Yin1, Jie-Tao Pan1, Bang-Wei Yu1
1a Department of Traditional Chinese Medicinal Chemistry , Guangdong Pharmaceutical University , Guangzhou 510006 , People's Republic of China.
Abstract:
Two new compounds of acutacosides 1 and 2, pentasaccharide resin glycosides were isolated from the aerial parts of Argyreia acuta. The core of the two compounds was operculinic acid A, and they were esterfied at the same position, just one substituent group was linked at C-2 of Rha. The absolute configuration of the aglycone in the two compounds was established by Mosher's method, which was (11S)-hydroxyhexadecanoic acid (jalapinolic acid). Their structures were established by a combination of spectroscopic and chemical methods.
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