111136-62-0Relevant academic research and scientific papers
Sarcoglycosides A-C, new O-glycosylglycerol derivatives from the South China sea soft coral Sarcophyton infundibuliforme
Li, Liang,Wang, Chang-Yun,Shao, Chang-Lun,Guo, Yue-Wei,Li, Guo-Qiang,Sun, Xue-Ping,Han, Lei,Huang, Hui,Guan, Hua-Shi
experimental part, p. 1495 - 1502 (2009/10/17)
Chemical examination of the soft coral Sarcophyton infundibuliforme collected from the South China Sea resulted in the isolation of the three new O-glycosylglycerol derivatives sarcoglycosides A-C (1 - 3), together with two known compounds, chimyl alcohol
STRUCTURAL INVESTIGATIONS OF THE GALACTAN OF THE SNAIL LYMNAEA STAGNALIS
Bretting, Hagen,Jacobs, Guenter,Thiem, Joachim,Koenig, Wilfried A.,Knaap, Wil van der
, p. 201 - 218 (2007/10/02)
A galactan, isolated from the spawn of the snail Lymnaea stagnalis, contained D-galactose and 0.9percent of nitrogen, but neither L-galactose nor phosphate groups.The D20 values of the galactan and its first Smith-degradation product were +19.5 deg and +20 deg, respectively.During each of two consecutive Smith-degradations of the galactan, 1 mol of periodate was consumed and 0.45 mol of formic acid was liberated per mol of "anhydrogalactose" unit.Methylation analyses of the galactan and its first Smith-degradation product yielded equal proportions of 2,3,4,6-tetra-O-methyl- and 2,4-di-O-methyl-galactose.Only small quantities of 2,4,6- 4.9 molpercent) and 2,3,4-tri-O-methylgalactose (0.7 molpercent) were formed from the galactan, whereas the first Smith-degraded product gave 15.6 and 20.4 molpercent, respectively.The product of the second Smith-degradation disintegrated and the following oligosaccharides were identified: β-D-Gal-(1-1)-L-Gro, β-D-Gal-(1-3)-β-D-Gal-(1-1)-L-Gro, β-D-Gal-(1-6)-β-D-Gal-(1-1)-L-Gro, β-D-Gal-(1-6)-D-Gal-β-D-Gal-(1-3)-β-D-Gal-(1-1)-L-Gro, β-D-Gal-(1-3)--β-D-Gal-(1-1)-L-Gro, β-D-Gal-(1-3)-β-D-Gal-(1-3)-β-D-Gal-(1-6)-β-D-Gal-(1-1)-L-Gro, and β-D-Gal-(1-3)-β-D-Gal-(1-3)-β-D-Gal-(1-1)-L-Gro.Thus, the galactan is highly branched with the backbone containing sequences of either exclusively (1-6)-linked or of more or less regularly alterneting (1-3)- and (1-6)-linked units.The side chains vary in length and in the degree of branching.In immunoprecipitin studies, a high degree of species-specificity was seen when various snail galactans were tested with the antiserum to the Lymnaea stagnalis galactan.
