1802-12-6Relevant academic research and scientific papers
Synthesis of novel derivatives of esculentoside A and its aglycone phytolaccagenin, and evaluation of their haemolytic activity and inhibition of lipopolysaccharide-induced nitric oxide production
Gong, Wei,Jiang, Zhihui,Sun, Peng,Li, Ling,Jin, Yongsheng,Shao, Lucheng,Zhang, Wen,Liu, Baoshu,Zhang, Hongwei,Tang, Hua,Chen, Yufeng,Yi, Yanghua,Zhang, Dazhi
experimental part, p. 1833 - 1852 (2012/01/14)
A series of 46 compounds derived from esculentoside A and its aglycone were synthesized and characterized. The effect of these compounds on lipopolysaccharide (LPS)-induced NO production, haemolytic activity, and cell viability was evaluated. Structure-ac
New approaches to the structural modification of olean-type pentacylic triterpenes via microbial oxidation and glycosylation
Zhu, Yu-Yao,Qian, Li-Wu,Zhang, Jian,Liu, Ji-Hua,Yu, Bo-Yang
experimental part, p. 4206 - 4211 (2011/07/08)
Microbial transformation of 4 olean-type pentacyclic triterpenes (OPTs), 3-oxo oleanolic acid (1), 3-acetyl oleanolic acid (2), oleanolic acid (3), and esculentoside A (4) was studied. After the screening of 12 strains of microbes, preparative biotransformation by two strains of Streptomyces griseus ATCC 13273 and Aspergillus ochraceus CICC 40330 resulted in the isolation of 10 metabolites. The microbial catalyzed high efficient regio-selective methyl oxidation and glycosylation were discovered, which could be provided as an alternative method to expand the structural diversity of OPTs. All the structures of the metabolites were elucidated unambiguously by ESI-MS, 1H NMR, 13C NMR, and 2D-NMR spectroscopy.
METHODS AND COMPOSITIONS RELATED TO AGLYCOSIDIC ESCULENTOSIDE A
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Page/Page column 45, (2009/12/27)
Disclosed are compositions related to water soluble selective COX-2 inhibitors and methods of using the inhibitors (including h-EsA and derivatives thereof.)
