180980-45-4

Upstream product

• 108-24-7 acetic anhydride 
• 3006-41-5 4,6-O-benzylidene-D-glucose 
• 2280-44-6 D-Glucose 
• 1125-88-8 benzaldehyde dimethyl acetal 

Downstream Products

• 22893-78-3 2,3-di-O-acetyl-4,6-O-benzylidene-D-glucopyranose 
• 1009006-53-4 4-methoxyphenyl 2,3-di-O-acetyl-4,6-di-O-benzylidene-β-D-glucopyranoside 
• 315208-41-4 Acetic acid (2R,4aR,6S,7R,8S,8aR)-7-acetoxy-2-phenyl-6-(2,2,2-trichloro-acetimidoyloxy)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 
• 245450-72-0 hept-6-enoic acid 4,5-bis-benzyloxy-2-{7-benzyloxy-2-phenyl-6-[2,2,4-trimethyl-6-(1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy}-6-methyl-tetrahydro-pyran-3-yl ester 
• 245450-69-5 hept-6-enoic acid 4,5-bis-benzyloxy-2-{8-benzyloxy-2-phenyl-6-[2,2,4-trimethyl-6-(1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yloxy}-6-methyl-tetrahydro-pyran-3-yl ester 
• 245450-68-4 acetic acid 4,5-bis-benzyloxy-2-{8-benzyloxy-2-phenyl-6-[2,2,4-trimethyl-6-(1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yloxy}-6-methyl-tetrahydro-pyran-3-yl ester 
• 245450-71-9 acetic acid 4,5-bis-benzyloxy-2-{7-benzyloxy-2-phenyl-6-[2,2,4-trimethyl-6-(1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yloxy}-6-methyl-tetrahydro-pyran-3-yl ester 
• 871919-79-8 Undec-10-enoic acid (2R,4aR,6S,7R,8R,8aR)-7-hydroxy-2-phenyl-6-[(3aS,4R,6R,7R,7aS)-2,2,4-trimethyl-6-((S)-1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 
• 245450-60-6 Pent-4-enoic acid (2R,4aR,6S,7R,8R,8aR)-7-hydroxy-2-phenyl-6-[(3aS,4R,6R,7R,7aS)-2,2,4-trimethyl-6-((S)-1-pentyl-hex-5-enyloxy)-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yloxy]-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 

Relevant academic research and scientific papers

NATURAL AND SYNTHETIC DITERPENE GLYCOSIDES, COMPOSITIONS AND METHODS

Novel diterpene glycosides isolated from Stevia extract as well as diterpene glycosides that are synthetically prepared are provided herein. Compositions and consumables comprising the novel diterpene glycosides are also provided herein. Methods of enhancing the sweetness and/or flavor of consumables using the novel diterpene glycosides, methods of preparing compositions and consumables comprising the novel diterpene glycosides, methods of purifying the novel diterpene glycosides and methods of synthesizing the diterpene glycosides are also provided.

Oligosaccharide compound and its manufacture and its intermediate

The purpose of the present invention is to provide an oligosaccharide with high versatility that can produce a protected sulfate oligosaccharide that can become a manufacturing intermediate of polysulfated hyaluronic acid, and to provide a manufacturing method therefor and an intermediate thereof. Position 2 amino groups in glucosamine, galactosamine, and the like can react with saccharide receptors having an electron attracting group such as glucuronic acid and protected sulfate groups, by using a saccharide donor protected by a specific protective group.

Synthesis of an allergy inducing tetrasaccharide “4P-X”

4P-X (β-D-galactopyranosyl-(1?→?4)-β-D-galactopyranosyl-(1?→?6)-[β-D-galactopyranosyl-(1?→?4)]-β-D-glucopyranose) is included in galacto-oligosaccharides (GOSs) produced by β-galactosidase derived from Bacillus circulans. 4P-X has been known to induce particularly strong allergies. High purity 4P-X is essential for use as a standard to quantify the amount of 4P-X in GOSs; however, the isolation of high purity 4P-X has never been reported. In this study, we achieved the synthesis of 4P-X by a combination of organic and enzymatic chemical syntheses in a short time. This is the first report of isolated, high purity 4P-X.

Efficient total syntheses of resin glycosides and analogues by ring-closing olefin metathesis

A highly efficient entry into the resin glycoside family of natural products is outlined which takes advantage of the inherently modular character of ring-closing metathesis (RCM) for the formation of their macrolactone substructures. Starting from only t

A versatile strategy for the synthesis of complex type N-glycans: Synthesis of diantennary and bisected diantennary oligosaccharides1

Based on readily available glucose, 2-azido-glucose, mannose, and N- phthaloyllactosamine building blocks 5, 6, 8, and 13 a highly versatile strategy for the synthesis of complex type and bisected complex type N- glycan residues is established; this is demonstrated for the synthesis of nonasaccharide 1 and decasaccharide 2, respectively. The glucose residue g finally provides regioselective access to the 3-, 4-, and/or 6-hydroxy groups for antenna attachment, introduction of the bisecting N-acetylglucosamine residue, and epimerisation at C-2 in order to generate the required β- linked mannosyl residue c.

Total synthesis of tricolorin A

Tricolorin A (1) is a novel tetrasaccharide macrolactone that is a natural herbicide. In this paper is reported a total synthesis of 1. Coupling of hydroxy ester 18 with D-fucosyl trichloroacetimidate 23 gave fucoside 24. Removal of he C-2 pivaloyl group