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Upstream product

• 67-56-1 methanol 
• 112693-26-2 C₃₇H₆₂O₁₇ 
• 113719-39-4 C₆₅H₁₀₉NO₂₂ 
• 95690-55-4 Acetic acid (2R,3R,4R,5R,6S)-3,4,5-trimethoxy-6-{5-methoxy-4-oxo-2-[4-((2S,3R,4R,5R,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-phenyl]-4H-chromen-7-yloxy}-tetrahydro-pyran-2-ylmethyl ester 
• 95690-54-3 5-Methoxy-7-((2S,3R,4R,5R,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-2-[4-((2S,3R,4R,5R,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-phenyl]-chromen-4-one 
• 95690-50-9 7-Hydroxy-5-methoxy-2-[4-((2S,3R,4R,5R,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-phenyl]-chromen-4-one 
• 72594-99-1 C₆₃H₁₀₆O₂₀ 
• 90145-61-2 (2R,4S)-4-Methoxy-2-(4-methoxy-phenyl)-6,8-dimethyl-5,7-bis-((2S,3R,4S,5R,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-chroman 
• 102329-91-9 C₄₉H₈₄O₁₂ 

Downstream Products

• 132618-57-6 (D)-2,3,4,5,6-Penta-O-methyl-1-O-(triphenylmethyl)glucitol 
• 132540-39-7 (D)-2,3,4,6-Tetra-O-methyl-1-O-(triphenylmethyl)glucitol 

Relevant academic research and scientific papers

Entada Saponins (ES) II and IV from the Bark of Entada phaseoloides

The structures of entada saponins II and IV, isolated from the bark of Entada phaseoloides (L.) Merrill (Leguminosae), were elucidated as 3-O-2)-α-L-arabinopyranosyl-(1->6)>4)>-2-acetamido-2-deoxy-β-D-glucopyranosyl-28-O-3)-β-D-xylopyranosyl(1->2)>4)>-6-O-((6R)-6-hydroxy-2,6-dimethyl-(2E)-2,7-octadienoyl)-β-D-glucopyranosyl olenolic acid (1) and entagenic acid (3).Keywords - Entada phaseoloides; Leguminosae; triterpene saponin; 13C-NMR chemical shift; entada saponin II; entada saponin IV

Comparative Studies on the Constituents of a Parasitic Plant and Its Host. III. On the Constituents of Boschniakia rossica FEDTSCH, et FLEROV. (2)

Two iridoid glucosides, namely boschnaloside (2), (+)-pinoresinol-β-D-glucopyranoside (3), a new oligosaccharide (=β-D-glucopyranosyl(1->4)-α-L-rhamnopyranosyl-(1->3)-D-(4-O-caffeoyl)-glucopyranose) (4), and a new phenylpropanoid glycoside named rossicaside A (5) have been isolated from Boschniakia rossica FEDTSCH, et FLEROV (Orobanchaceae) and their structures have been determined.Keywords--Boschniakia rossica; Orobanchaceae; boschnaloside; boschnaside; (+)-pinoresinol-β-D-glucoside; acetylated oligosaccharide; rossicaside A; phenylpropanoid glycoside

Chemische und Chemotaxonomische Untersuchungen der Pterophyten. XLV. Chemische Untersuchungen der Inhaltstoffe von Glaphyropteridopsis erubescens (Wall.) Copel.

The fronds extracts of Glaphyropteridopsis erubescens (Wall.) Copel. contain besides the already known flavonol glycosides (afzelin and quercitrin) three new flavan-4-ol glycosides, eruberin A(I), B(II) and C(III), which belong to a new type of proanthocyanidin.By means of spectroscopic and chemical methods, the structures 5,7-dihydroxy-4'-methoxy-6,8-dimethyl-2'',4(S)-oxido-2(R)-flavan-5-β-D-glucopyranoside (I), 4(S),5,7-trihydroxy-4'-methoxy-6,8-dimethyl-2(R)-flavan-5,7-O-β-D-diglucopyranoside (II) and 5,7-dihydroxy-4(S),4'-dimethoxy-6,8-dimethyl-2(R)-flavan-5,7-O-β-D-diglucopyranoside (III) are proposed.Eruberin C(III) may be an artifact. Keywords - Glaphyropteridopsis erubescens; fern; Thelypteridaceae; chemotaxonomy; flavan-4-ol glycoside; structure; spectroscopic method; chemical reaction

STRUCTURAL INVESTIGATION OF Klebsiella K-TYPE 4 CAPSULAR POLYSACCHARIDE

The capsular polysaccharide from Klebsiella K4 contains the tetrasaccharide repeating-sequence 3)-α-D-Glcp-(12)-α-D-GlcpA-(13)-α-D-Manp-(13)-β-D-Glcp-(1.P.m.r. spectroscopy and the measurement of optical rotation were used to establish the anomeric linkages in the polysaccharide and in the oligosaccharides derived by partial hydrolysis.The repeating unit also contains one O-acetyl group.