Biosynthesis of oligosaccharides and fructans in Agave vera cruz: Part II. Biosynthesis of oligosaccharides was written by Satyanarayana, M. N.. And the article was included in Indian Journal of Biochemistry & Biophysics in 1976.Category: tetrahydrofurans This article mentions the following:
The syntheses of oligosaccharides occurring in the plant, Agave vera cruz, are brought about by transfructosylases. An enzyme preparation from the plant stem synthesizes 1-kestose from sucrose. Further action by the enzyme on 1-kestose leads to the formation of 2 series of homologous oligosaccharides with 1-kestose and neokestose basic structures, as judged by mass spectrometry, NMR, and methylation techniques. Each of the naturally occurring oligosaccharides, with d.p. 3-6, is acted upon by the enzyme, resulting in a series of oligosaccharides suggesting similarity of synthesis from 1-kestose. Experiments with sucrose-U-14C established its key role as the starting substrate in the successive synthesis of the higher oligosaccharides. No evidence was found for the formation of branched or 6-kestose-type oligosaccharides by the enzyme, although these are known to occur naturally. Self-transfer appears to be the main pathway of synthesis. Reactions in which sucrose serves as a donor of fructose moieties to oligosaccharides and vice versa appear to be minor. Oligosaccharide synthesis appears to be enhanced significantly under conditions of fructan synthesis. In the experiment, the researchers used many compounds, for example, (2R,3R,4S,5S,6R)-2-(((2S,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-3,4-Dihydroxy-2,5-bis(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 62512-20-3Category: tetrahydrofurans).
(2R,3R,4S,5S,6R)-2-(((2S,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-2-((((2R,3S,4S,5R)-3,4-Dihydroxy-2,5-bis(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)methyl)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 62512-20-3) belongs to tetrahydrofuran derivatives. Tetrahydrofuran and dihydrofuran form the basic structural unit of many naturally occurring scaffolds like gambieric acid A and ciguatoxin, goniocin, and some biologically active molecules. Oxidations have also proved to be valuable and efficient approaches to chiral tetrahydrofuran derivatives.Category: tetrahydrofurans
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem