83680-90-4

Upstream product

• 1028100-28-8 quillaic acid 3-O-β-D-galactopyranosyl-(1->2)-[β-D-galactopyranosyl-(1->3)]-β-D-glucuronopyranoside 
• 2627-86-3 (S)-1-phenyl-ethylamine 
• 108-24-7 acetic anhydride 
• 50-99-7 D-glucose 
• 1093867-49-2 (2R,3S,4S)-3-O-[α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranosyl]-3'-O-methyl-ent-epicatechin-(2α → O → 3,4α → 4)-(5aS,10bS)-5a,10b-dihydro-1,3,5a,9-tetrahydroxy-8-methoxy-6H-benz[b]indeno[1,2-d]furan-6-one 5a-O-[α-L-rhamnopyranosyl-(1 → 6)-β-D-glucopyranoside] 

Relevant academic research and scientific papers

Phenolic glycosides from Kaempferia parviflora

Three phenolic glycosides were isolated together with two known flavonol glycosides from the H2O-soluble fraction of rhizomes of Kaempferia parviflora. Their structures were determined to be rel-(5aS,10bS)-5a,10b-dihydro-1,3,5a,9-tetrahydroxy-8

Oleanane-type triterpenoid saponins from Silene armeria

Twelve triterpenoid saponins, including seven compounds (i.e., armerosides A–G) hitherto unknown, were isolated from whole plants of Silene armeria. Their structures were established based on extensive spectroscopic analyses and chemical methods. From a biosynthetic perspective, C-23 oxidation of the sapogenin appears to be a key factor in the glycosylation pathway.

Isolation and structural elucidation of novel cholestane glycosides and spirostane saponins from Polygonatum odoratum

Much attention has been paid to cholestane-type steroidal glycosides because of their importance from the perspectives of both chemical diversity and significant biological activities. A phytochemical investigation of the rhizomes of Polygonatum odoratum (Liliaceae) resulted in the isolation of three novel cholestane-type steroidal glycosides (1-3) with unique Δ14,16-unsaturated D-ring structures as well as two novel spirostane-type steroidal saponins (4 and 5) and three known steroidal glycosides (6-8). Their structures were determined by various spectroscopic methods and chemical reactions. Steroidal saponin 7 showed significant antifungal activity against Candida albicans JCM1542 (MIC 3.1 μg/mL) and Aspergillus fumigatus JCM1738 (MIC 6.3 μg/mL).