10049-88-4

Upstream product

• 36480-32-7 methyl-[O³,O⁴,O⁶-trimethyl-O²-(toluene-4-sulfonyl)-β-D-galactopyranoside] 
• 67-56-1 methanol 
• 7664-41-7 ammonia 
• 74-88-4 methyl iodide 
• 3006-60-8 2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-β-D-galactopyranose 
• 116237-66-2 C₇₇H₁₃₀N₂O₂₆ 
• 77-78-1 dimethyl sulfate 
• 10385-50-9 2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-α-D-galactopyranoside 
• 7437-12-9 methyl-(2-acetylamino-tri-O-methyl-2-deoxy-β-D-galactopyranoside) 

Relevant academic research and scientific papers

Sarasinoside A1: A Saponin Containing Amino Sugars Isolated from a Sponge

A new saponin designated sarasinoside A1, 1, has been isolated from a sponge, Asteropus sp., collected from Guam Island and also from Truk Lagoon.Acid hydrolysis of sarasinoside A1 afforded the aglycon 2, identified as 3β-hydroxy-4,4-dimethylcholesta-8,24-dien-23-one by spectral analysis.Methanolysis of 1 yielded the methyl glycosides of xylose, glucose, N-acetyl-2-amino-2-deoxygalactose, and N-acetyl-2-amino-2-deoxyglucose.Glycosidic connections were established by a combination of chemical degradations and spectroscopic methods. 1H and 13C NMR assignments were made with the aid of 1H/13C NMR correlations, relayed coherence transfer, and ROESY experiments.This appears to be the first saponin isolated from a sponge.